[PATCH 1/3] remoteproc: mtk_scp: Use devm variant of rproc_alloc()

[PATCH 1/3] remoteproc: mtk_scp: Use devm variant of rproc_alloc()

[AngeloGioacchino Del Regno]

To simplify the probe function, switch from using rproc_alloc() to
devm_rproc_alloc(); while at it, also put everything on a single line,
as it acceptably fits in 82 columns.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 36e48cf58ed6..95a40e3f11e3 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -756,11 +756,7 @@ static int scp_probe(struct platform_device *pdev)
 	char *fw_name = "scp.img";
 	int ret, i;
 
-	rproc = rproc_alloc(dev,
-			    np->name,
-			    &scp_ops,
-			    fw_name,
-			    sizeof(*scp));
+	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
 	if (!rproc) {
 		dev_err(dev, "unable to allocate remoteproc\n");
 		return -ENOMEM;
@@ -776,8 +772,7 @@ static int scp_probe(struct platform_device *pdev)
 	scp->sram_base = devm_ioremap_resource(dev, res);
 	if (IS_ERR((__force void *)scp->sram_base)) {
 		dev_err(dev, "Failed to parse and map sram memory\n");
-		ret = PTR_ERR((__force void *)scp->sram_base);
-		goto free_rproc;
+		return PTR_ERR((__force void *)scp->sram_base);
 	}
 	scp->sram_size = resource_size(res);
 	scp->sram_phys = res->start;
@@ -789,7 +784,7 @@ static int scp_probe(struct platform_device *pdev)
 		ret = PTR_ERR((__force void *)scp->l1tcm_base);
 		if (ret != -EINVAL) {
 			dev_err(dev, "Failed to map l1tcm memory\n");
-			goto free_rproc;
+			return ret;
 		}
 	} else {
 		scp->l1tcm_size = resource_size(res);
@@ -851,8 +846,6 @@ static int scp_probe(struct platform_device *pdev)
 	for (i = 0; i < SCP_IPI_MAX; i++)
 		mutex_destroy(&scp->ipi_desc[i].lock);
 	mutex_destroy(&scp->send_lock);
-free_rproc:
-	rproc_free(rproc);
 
 	return ret;
 }
-- 
2.33.1

[PATCH 1/3] remoteproc: mtk_scp: Use devm variant of rproc_alloc()

[AngeloGioacchino Del Regno]

To simplify the probe function, switch from using rproc_alloc() to
devm_rproc_alloc(); while at it, also put everything on a single line,
as it acceptably fits in 82 columns.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 36e48cf58ed6..95a40e3f11e3 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -756,11 +756,7 @@ static int scp_probe(struct platform_device *pdev)
 	char *fw_name = "scp.img";
 	int ret, i;
 
-	rproc = rproc_alloc(dev,
-			    np->name,
-			    &scp_ops,
-			    fw_name,
-			    sizeof(*scp));
+	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
 	if (!rproc) {
 		dev_err(dev, "unable to allocate remoteproc\n");
 		return -ENOMEM;
@@ -776,8 +772,7 @@ static int scp_probe(struct platform_device *pdev)
 	scp->sram_base = devm_ioremap_resource(dev, res);
 	if (IS_ERR((__force void *)scp->sram_base)) {
 		dev_err(dev, "Failed to parse and map sram memory\n");
-		ret = PTR_ERR((__force void *)scp->sram_base);
-		goto free_rproc;
+		return PTR_ERR((__force void *)scp->sram_base);
 	}
 	scp->sram_size = resource_size(res);
 	scp->sram_phys = res->start;
@@ -789,7 +784,7 @@ static int scp_probe(struct platform_device *pdev)
 		ret = PTR_ERR((__force void *)scp->l1tcm_base);
 		if (ret != -EINVAL) {
 			dev_err(dev, "Failed to map l1tcm memory\n");
-			goto free_rproc;
+			return ret;
 		}
 	} else {
 		scp->l1tcm_size = resource_size(res);
@@ -851,8 +846,6 @@ static int scp_probe(struct platform_device *pdev)
 	for (i = 0; i < SCP_IPI_MAX; i++)
 		mutex_destroy(&scp->ipi_desc[i].lock);
 	mutex_destroy(&scp->send_lock);
-free_rproc:
-	rproc_free(rproc);
 
 	return ret;
 }
-- 
2.33.1


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

[PATCH 1/3] remoteproc: mtk_scp: Use devm variant of rproc_alloc()

[AngeloGioacchino Del Regno]

To simplify the probe function, switch from using rproc_alloc() to
devm_rproc_alloc(); while at it, also put everything on a single line,
as it acceptably fits in 82 columns.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 36e48cf58ed6..95a40e3f11e3 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -756,11 +756,7 @@ static int scp_probe(struct platform_device *pdev)
 	char *fw_name = "scp.img";
 	int ret, i;
 
-	rproc = rproc_alloc(dev,
-			    np->name,
-			    &scp_ops,
-			    fw_name,
-			    sizeof(*scp));
+	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
 	if (!rproc) {
 		dev_err(dev, "unable to allocate remoteproc\n");
 		return -ENOMEM;
@@ -776,8 +772,7 @@ static int scp_probe(struct platform_device *pdev)
 	scp->sram_base = devm_ioremap_resource(dev, res);
 	if (IS_ERR((__force void *)scp->sram_base)) {
 		dev_err(dev, "Failed to parse and map sram memory\n");
-		ret = PTR_ERR((__force void *)scp->sram_base);
-		goto free_rproc;
+		return PTR_ERR((__force void *)scp->sram_base);
 	}
 	scp->sram_size = resource_size(res);
 	scp->sram_phys = res->start;
@@ -789,7 +784,7 @@ static int scp_probe(struct platform_device *pdev)
 		ret = PTR_ERR((__force void *)scp->l1tcm_base);
 		if (ret != -EINVAL) {
 			dev_err(dev, "Failed to map l1tcm memory\n");
-			goto free_rproc;
+			return ret;
 		}
 	} else {
 		scp->l1tcm_size = resource_size(res);
@@ -851,8 +846,6 @@ static int scp_probe(struct platform_device *pdev)
 	for (i = 0; i < SCP_IPI_MAX; i++)
 		mutex_destroy(&scp->ipi_desc[i].lock);
 	mutex_destroy(&scp->send_lock);
-free_rproc:
-	rproc_free(rproc);
 
 	return ret;
 }
-- 
2.33.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH 2/3] remoteproc: mtk_scp: Reorder scp_probe() sequence

[AngeloGioacchino Del Regno]

Cleanup the scp_probe() function by reordering some calls in this
function, useful to reduce the usage of goto(s), and preparing
for one more usage of dev_err_probe().

In particular, we can get the clocks before mapping the memory region,
and move the mutexes initialization right before registering the ipi
handler (which is the first mutex user in this driver).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 95a40e3f11e3..e40706b0e015 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -791,24 +791,23 @@ static int scp_probe(struct platform_device *pdev)
 		scp->l1tcm_phys = res->start;
 	}
 
-	mutex_init(&scp->send_lock);
-	for (i = 0; i < SCP_IPI_MAX; i++)
-		mutex_init(&scp->ipi_desc[i].lock);
-
 	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
 	if (IS_ERR((__force void *)scp->reg_base)) {
 		dev_err(dev, "Failed to parse and map cfg memory\n");
-		ret = PTR_ERR((__force void *)scp->reg_base);
-		goto destroy_mutex;
+		return PTR_ERR((__force void *)scp->reg_base);
 	}
 
-	ret = scp_map_memory_region(scp);
+	ret = scp->data->scp_clk_get(scp);
 	if (ret)
-		goto destroy_mutex;
+		return ret;
 
-	ret = scp->data->scp_clk_get(scp);
+	ret = scp_map_memory_region(scp);
 	if (ret)
-		goto release_dev_mem;
+		return ret;
+
+	mutex_init(&scp->send_lock);
+	for (i = 0; i < SCP_IPI_MAX; i++)
+		mutex_init(&scp->ipi_desc[i].lock);
 
 	/* register SCP initialization IPI */
 	ret = scp_ipi_register(scp, SCP_IPI_INIT, scp_init_ipi_handler, scp);
@@ -842,7 +841,6 @@ static int scp_probe(struct platform_device *pdev)
 	scp_ipi_unregister(scp, SCP_IPI_INIT);
 release_dev_mem:
 	scp_unmap_memory_region(scp);
-destroy_mutex:
 	for (i = 0; i < SCP_IPI_MAX; i++)
 		mutex_destroy(&scp->ipi_desc[i].lock);
 	mutex_destroy(&scp->send_lock);
-- 
2.33.1

[PATCH 2/3] remoteproc: mtk_scp: Reorder scp_probe() sequence

[AngeloGioacchino Del Regno]

Cleanup the scp_probe() function by reordering some calls in this
function, useful to reduce the usage of goto(s), and preparing
for one more usage of dev_err_probe().

In particular, we can get the clocks before mapping the memory region,
and move the mutexes initialization right before registering the ipi
handler (which is the first mutex user in this driver).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 95a40e3f11e3..e40706b0e015 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -791,24 +791,23 @@ static int scp_probe(struct platform_device *pdev)
 		scp->l1tcm_phys = res->start;
 	}
 
-	mutex_init(&scp->send_lock);
-	for (i = 0; i < SCP_IPI_MAX; i++)
-		mutex_init(&scp->ipi_desc[i].lock);
-
 	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
 	if (IS_ERR((__force void *)scp->reg_base)) {
 		dev_err(dev, "Failed to parse and map cfg memory\n");
-		ret = PTR_ERR((__force void *)scp->reg_base);
-		goto destroy_mutex;
+		return PTR_ERR((__force void *)scp->reg_base);
 	}
 
-	ret = scp_map_memory_region(scp);
+	ret = scp->data->scp_clk_get(scp);
 	if (ret)
-		goto destroy_mutex;
+		return ret;
 
-	ret = scp->data->scp_clk_get(scp);
+	ret = scp_map_memory_region(scp);
 	if (ret)
-		goto release_dev_mem;
+		return ret;
+
+	mutex_init(&scp->send_lock);
+	for (i = 0; i < SCP_IPI_MAX; i++)
+		mutex_init(&scp->ipi_desc[i].lock);
 
 	/* register SCP initialization IPI */
 	ret = scp_ipi_register(scp, SCP_IPI_INIT, scp_init_ipi_handler, scp);
@@ -842,7 +841,6 @@ static int scp_probe(struct platform_device *pdev)
 	scp_ipi_unregister(scp, SCP_IPI_INIT);
 release_dev_mem:
 	scp_unmap_memory_region(scp);
-destroy_mutex:
 	for (i = 0; i < SCP_IPI_MAX; i++)
 		mutex_destroy(&scp->ipi_desc[i].lock);
 	mutex_destroy(&scp->send_lock);
-- 
2.33.1


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

[PATCH 2/3] remoteproc: mtk_scp: Reorder scp_probe() sequence

[AngeloGioacchino Del Regno]

Cleanup the scp_probe() function by reordering some calls in this
function, useful to reduce the usage of goto(s), and preparing
for one more usage of dev_err_probe().

In particular, we can get the clocks before mapping the memory region,
and move the mutexes initialization right before registering the ipi
handler (which is the first mutex user in this driver).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 95a40e3f11e3..e40706b0e015 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -791,24 +791,23 @@ static int scp_probe(struct platform_device *pdev)
 		scp->l1tcm_phys = res->start;
 	}
 
-	mutex_init(&scp->send_lock);
-	for (i = 0; i < SCP_IPI_MAX; i++)
-		mutex_init(&scp->ipi_desc[i].lock);
-
 	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
 	if (IS_ERR((__force void *)scp->reg_base)) {
 		dev_err(dev, "Failed to parse and map cfg memory\n");
-		ret = PTR_ERR((__force void *)scp->reg_base);
-		goto destroy_mutex;
+		return PTR_ERR((__force void *)scp->reg_base);
 	}
 
-	ret = scp_map_memory_region(scp);
+	ret = scp->data->scp_clk_get(scp);
 	if (ret)
-		goto destroy_mutex;
+		return ret;
 
-	ret = scp->data->scp_clk_get(scp);
+	ret = scp_map_memory_region(scp);
 	if (ret)
-		goto release_dev_mem;
+		return ret;
+
+	mutex_init(&scp->send_lock);
+	for (i = 0; i < SCP_IPI_MAX; i++)
+		mutex_init(&scp->ipi_desc[i].lock);
 
 	/* register SCP initialization IPI */
 	ret = scp_ipi_register(scp, SCP_IPI_INIT, scp_init_ipi_handler, scp);
@@ -842,7 +841,6 @@ static int scp_probe(struct platform_device *pdev)
 	scp_ipi_unregister(scp, SCP_IPI_INIT);
 release_dev_mem:
 	scp_unmap_memory_region(scp);
-destroy_mutex:
 	for (i = 0; i < SCP_IPI_MAX; i++)
 		mutex_destroy(&scp->ipi_desc[i].lock);
 	mutex_destroy(&scp->send_lock);
-- 
2.33.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[AngeloGioacchino Del Regno]

Simplify the probe function, where possible, by using dev_err_probe().
While at it, as to increase human readability, also remove some
unnecessary forced void pointer casts that were previously used in
error checking.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index e40706b0e015..dcddb33e9997 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
 	int ret, i;
 
 	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
-	if (!rproc) {
-		dev_err(dev, "unable to allocate remoteproc\n");
-		return -ENOMEM;
-	}
+	if (!rproc)
+		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
 
 	scp = (struct mtk_scp *)rproc->priv;
 	scp->rproc = rproc;
@@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
 	scp->sram_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR((__force void *)scp->sram_base)) {
-		dev_err(dev, "Failed to parse and map sram memory\n");
-		return PTR_ERR((__force void *)scp->sram_base);
-	}
+	if (IS_ERR(scp->sram_base))
+		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
+				     "Failed to parse and map sram memory\n");
+
 	scp->sram_size = resource_size(res);
 	scp->sram_phys = res->start;
 
 	/* l1tcm is an optional memory region */
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
 	scp->l1tcm_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR((__force void *)scp->l1tcm_base)) {
-		ret = PTR_ERR((__force void *)scp->l1tcm_base);
+	if (IS_ERR(scp->l1tcm_base)) {
+		ret = PTR_ERR(scp->l1tcm_base);
 		if (ret != -EINVAL) {
-			dev_err(dev, "Failed to map l1tcm memory\n");
-			return ret;
+			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
 		}
 	} else {
 		scp->l1tcm_size = resource_size(res);
@@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
 	}
 
 	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
-	if (IS_ERR((__force void *)scp->reg_base)) {
-		dev_err(dev, "Failed to parse and map cfg memory\n");
-		return PTR_ERR((__force void *)scp->reg_base);
-	}
+	if (IS_ERR(scp->reg_base))
+		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
+				     "Failed to parse and map cfg memory\n");
 
 	ret = scp->data->scp_clk_get(scp);
 	if (ret)
-- 
2.33.1

[PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[AngeloGioacchino Del Regno]

Simplify the probe function, where possible, by using dev_err_probe().
While at it, as to increase human readability, also remove some
unnecessary forced void pointer casts that were previously used in
error checking.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index e40706b0e015..dcddb33e9997 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
 	int ret, i;
 
 	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
-	if (!rproc) {
-		dev_err(dev, "unable to allocate remoteproc\n");
-		return -ENOMEM;
-	}
+	if (!rproc)
+		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
 
 	scp = (struct mtk_scp *)rproc->priv;
 	scp->rproc = rproc;
@@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
 	scp->sram_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR((__force void *)scp->sram_base)) {
-		dev_err(dev, "Failed to parse and map sram memory\n");
-		return PTR_ERR((__force void *)scp->sram_base);
-	}
+	if (IS_ERR(scp->sram_base))
+		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
+				     "Failed to parse and map sram memory\n");
+
 	scp->sram_size = resource_size(res);
 	scp->sram_phys = res->start;
 
 	/* l1tcm is an optional memory region */
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
 	scp->l1tcm_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR((__force void *)scp->l1tcm_base)) {
-		ret = PTR_ERR((__force void *)scp->l1tcm_base);
+	if (IS_ERR(scp->l1tcm_base)) {
+		ret = PTR_ERR(scp->l1tcm_base);
 		if (ret != -EINVAL) {
-			dev_err(dev, "Failed to map l1tcm memory\n");
-			return ret;
+			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
 		}
 	} else {
 		scp->l1tcm_size = resource_size(res);
@@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
 	}
 
 	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
-	if (IS_ERR((__force void *)scp->reg_base)) {
-		dev_err(dev, "Failed to parse and map cfg memory\n");
-		return PTR_ERR((__force void *)scp->reg_base);
-	}
+	if (IS_ERR(scp->reg_base))
+		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
+				     "Failed to parse and map cfg memory\n");
 
 	ret = scp->data->scp_clk_get(scp);
 	if (ret)
-- 
2.33.1


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

[PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[AngeloGioacchino Del Regno]

Simplify the probe function, where possible, by using dev_err_probe().
While at it, as to increase human readability, also remove some
unnecessary forced void pointer casts that were previously used in
error checking.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index e40706b0e015..dcddb33e9997 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
 	int ret, i;
 
 	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
-	if (!rproc) {
-		dev_err(dev, "unable to allocate remoteproc\n");
-		return -ENOMEM;
-	}
+	if (!rproc)
+		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
 
 	scp = (struct mtk_scp *)rproc->priv;
 	scp->rproc = rproc;
@@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
 	scp->sram_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR((__force void *)scp->sram_base)) {
-		dev_err(dev, "Failed to parse and map sram memory\n");
-		return PTR_ERR((__force void *)scp->sram_base);
-	}
+	if (IS_ERR(scp->sram_base))
+		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
+				     "Failed to parse and map sram memory\n");
+
 	scp->sram_size = resource_size(res);
 	scp->sram_phys = res->start;
 
 	/* l1tcm is an optional memory region */
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
 	scp->l1tcm_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR((__force void *)scp->l1tcm_base)) {
-		ret = PTR_ERR((__force void *)scp->l1tcm_base);
+	if (IS_ERR(scp->l1tcm_base)) {
+		ret = PTR_ERR(scp->l1tcm_base);
 		if (ret != -EINVAL) {
-			dev_err(dev, "Failed to map l1tcm memory\n");
-			return ret;
+			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
 		}
 	} else {
 		scp->l1tcm_size = resource_size(res);
@@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
 	}
 
 	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
-	if (IS_ERR((__force void *)scp->reg_base)) {
-		dev_err(dev, "Failed to parse and map cfg memory\n");
-		return PTR_ERR((__force void *)scp->reg_base);
-	}
+	if (IS_ERR(scp->reg_base))
+		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
+				     "Failed to parse and map cfg memory\n");
 
 	ret = scp->data->scp_clk_get(scp);
 	if (ret)
-- 
2.33.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[Mathieu Poirier]

Hi Angelo,

On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
> Simplify the probe function, where possible, by using dev_err_probe().
> While at it, as to increase human readability, also remove some
> unnecessary forced void pointer casts that were previously used in
> error checking.

I am in favour of all 3 patches (please add a cover letter next time) but weary
about testing - do you have access to a Mediatek platform to try this on or
is it purely theoretical?

I would definitely feel better to see a "Tested-by" tag by someone out there
with access to the HW.

Thanks,
Mathieu

> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
>  1 file changed, 12 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> index e40706b0e015..dcddb33e9997 100644
> --- a/drivers/remoteproc/mtk_scp.c
> +++ b/drivers/remoteproc/mtk_scp.c
> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
>  	int ret, i;
>  
>  	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
> -	if (!rproc) {
> -		dev_err(dev, "unable to allocate remoteproc\n");
> -		return -ENOMEM;
> -	}
> +	if (!rproc)
> +		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
>  
>  	scp = (struct mtk_scp *)rproc->priv;
>  	scp->rproc = rproc;
> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
>  
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
>  	scp->sram_base = devm_ioremap_resource(dev, res);
> -	if (IS_ERR((__force void *)scp->sram_base)) {
> -		dev_err(dev, "Failed to parse and map sram memory\n");
> -		return PTR_ERR((__force void *)scp->sram_base);
> -	}
> +	if (IS_ERR(scp->sram_base))
> +		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
> +				     "Failed to parse and map sram memory\n");
> +
>  	scp->sram_size = resource_size(res);
>  	scp->sram_phys = res->start;
>  
>  	/* l1tcm is an optional memory region */
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
>  	scp->l1tcm_base = devm_ioremap_resource(dev, res);
> -	if (IS_ERR((__force void *)scp->l1tcm_base)) {
> -		ret = PTR_ERR((__force void *)scp->l1tcm_base);
> +	if (IS_ERR(scp->l1tcm_base)) {
> +		ret = PTR_ERR(scp->l1tcm_base);
>  		if (ret != -EINVAL) {
> -			dev_err(dev, "Failed to map l1tcm memory\n");
> -			return ret;
> +			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
>  		}
>  	} else {
>  		scp->l1tcm_size = resource_size(res);
> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
>  	}
>  
>  	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
> -	if (IS_ERR((__force void *)scp->reg_base)) {
> -		dev_err(dev, "Failed to parse and map cfg memory\n");
> -		return PTR_ERR((__force void *)scp->reg_base);
> -	}
> +	if (IS_ERR(scp->reg_base))
> +		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
> +				     "Failed to parse and map cfg memory\n");
>  
>  	ret = scp->data->scp_clk_get(scp);
>  	if (ret)
> -- 
> 2.33.1
> 

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[Mathieu Poirier]

Hi Angelo,

On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
> Simplify the probe function, where possible, by using dev_err_probe().
> While at it, as to increase human readability, also remove some
> unnecessary forced void pointer casts that were previously used in
> error checking.

I am in favour of all 3 patches (please add a cover letter next time) but weary
about testing - do you have access to a Mediatek platform to try this on or
is it purely theoretical?

I would definitely feel better to see a "Tested-by" tag by someone out there
with access to the HW.

Thanks,
Mathieu

> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
>  1 file changed, 12 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> index e40706b0e015..dcddb33e9997 100644
> --- a/drivers/remoteproc/mtk_scp.c
> +++ b/drivers/remoteproc/mtk_scp.c
> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
>  	int ret, i;
>  
>  	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
> -	if (!rproc) {
> -		dev_err(dev, "unable to allocate remoteproc\n");
> -		return -ENOMEM;
> -	}
> +	if (!rproc)
> +		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
>  
>  	scp = (struct mtk_scp *)rproc->priv;
>  	scp->rproc = rproc;
> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
>  
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
>  	scp->sram_base = devm_ioremap_resource(dev, res);
> -	if (IS_ERR((__force void *)scp->sram_base)) {
> -		dev_err(dev, "Failed to parse and map sram memory\n");
> -		return PTR_ERR((__force void *)scp->sram_base);
> -	}
> +	if (IS_ERR(scp->sram_base))
> +		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
> +				     "Failed to parse and map sram memory\n");
> +
>  	scp->sram_size = resource_size(res);
>  	scp->sram_phys = res->start;
>  
>  	/* l1tcm is an optional memory region */
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
>  	scp->l1tcm_base = devm_ioremap_resource(dev, res);
> -	if (IS_ERR((__force void *)scp->l1tcm_base)) {
> -		ret = PTR_ERR((__force void *)scp->l1tcm_base);
> +	if (IS_ERR(scp->l1tcm_base)) {
> +		ret = PTR_ERR(scp->l1tcm_base);
>  		if (ret != -EINVAL) {
> -			dev_err(dev, "Failed to map l1tcm memory\n");
> -			return ret;
> +			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
>  		}
>  	} else {
>  		scp->l1tcm_size = resource_size(res);
> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
>  	}
>  
>  	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
> -	if (IS_ERR((__force void *)scp->reg_base)) {
> -		dev_err(dev, "Failed to parse and map cfg memory\n");
> -		return PTR_ERR((__force void *)scp->reg_base);
> -	}
> +	if (IS_ERR(scp->reg_base))
> +		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
> +				     "Failed to parse and map cfg memory\n");
>  
>  	ret = scp->data->scp_clk_get(scp);
>  	if (ret)
> -- 
> 2.33.1
> 

_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[Mathieu Poirier]

Hi Angelo,

On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
> Simplify the probe function, where possible, by using dev_err_probe().
> While at it, as to increase human readability, also remove some
> unnecessary forced void pointer casts that were previously used in
> error checking.

I am in favour of all 3 patches (please add a cover letter next time) but weary
about testing - do you have access to a Mediatek platform to try this on or
is it purely theoretical?

I would definitely feel better to see a "Tested-by" tag by someone out there
with access to the HW.

Thanks,
Mathieu

> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
>  1 file changed, 12 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> index e40706b0e015..dcddb33e9997 100644
> --- a/drivers/remoteproc/mtk_scp.c
> +++ b/drivers/remoteproc/mtk_scp.c
> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
>  	int ret, i;
>  
>  	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
> -	if (!rproc) {
> -		dev_err(dev, "unable to allocate remoteproc\n");
> -		return -ENOMEM;
> -	}
> +	if (!rproc)
> +		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
>  
>  	scp = (struct mtk_scp *)rproc->priv;
>  	scp->rproc = rproc;
> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
>  
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
>  	scp->sram_base = devm_ioremap_resource(dev, res);
> -	if (IS_ERR((__force void *)scp->sram_base)) {
> -		dev_err(dev, "Failed to parse and map sram memory\n");
> -		return PTR_ERR((__force void *)scp->sram_base);
> -	}
> +	if (IS_ERR(scp->sram_base))
> +		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
> +				     "Failed to parse and map sram memory\n");
> +
>  	scp->sram_size = resource_size(res);
>  	scp->sram_phys = res->start;
>  
>  	/* l1tcm is an optional memory region */
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
>  	scp->l1tcm_base = devm_ioremap_resource(dev, res);
> -	if (IS_ERR((__force void *)scp->l1tcm_base)) {
> -		ret = PTR_ERR((__force void *)scp->l1tcm_base);
> +	if (IS_ERR(scp->l1tcm_base)) {
> +		ret = PTR_ERR(scp->l1tcm_base);
>  		if (ret != -EINVAL) {
> -			dev_err(dev, "Failed to map l1tcm memory\n");
> -			return ret;
> +			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
>  		}
>  	} else {
>  		scp->l1tcm_size = resource_size(res);
> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
>  	}
>  
>  	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
> -	if (IS_ERR((__force void *)scp->reg_base)) {
> -		dev_err(dev, "Failed to parse and map cfg memory\n");
> -		return PTR_ERR((__force void *)scp->reg_base);
> -	}
> +	if (IS_ERR(scp->reg_base))
> +		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
> +				     "Failed to parse and map cfg memory\n");
>  
>  	ret = scp->data->scp_clk_get(scp);
>  	if (ret)
> -- 
> 2.33.1
> 

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[AngeloGioacchino Del Regno]

Il 01/02/22 19:36, Mathieu Poirier ha scritto:
> Hi Angelo,
> 
> On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
>> Simplify the probe function, where possible, by using dev_err_probe().
>> While at it, as to increase human readability, also remove some
>> unnecessary forced void pointer casts that were previously used in
>> error checking.
> 
> I am in favour of all 3 patches (please add a cover letter next time) but weary
> about testing - do you have access to a Mediatek platform to try this on or
> is it purely theoretical?
> 
> I would definitely feel better to see a "Tested-by" tag by someone out there
> with access to the HW.
> 
> Thanks,
> Mathieu
> 

Hello Mathieu,

I have multiple MediaTek platforms and I always test on all of them before
pushing such commits upstream, so, even though this kind of patch is trivial,
this is *not* purely theoretical and I confirm that this was successfully tested.

Regards,
Angelo

>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>>   drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
>>   1 file changed, 12 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
>> index e40706b0e015..dcddb33e9997 100644
>> --- a/drivers/remoteproc/mtk_scp.c
>> +++ b/drivers/remoteproc/mtk_scp.c
>> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
>>   	int ret, i;
>>   
>>   	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
>> -	if (!rproc) {
>> -		dev_err(dev, "unable to allocate remoteproc\n");
>> -		return -ENOMEM;
>> -	}
>> +	if (!rproc)
>> +		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
>>   
>>   	scp = (struct mtk_scp *)rproc->priv;
>>   	scp->rproc = rproc;
>> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
>>   
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
>>   	scp->sram_base = devm_ioremap_resource(dev, res);
>> -	if (IS_ERR((__force void *)scp->sram_base)) {
>> -		dev_err(dev, "Failed to parse and map sram memory\n");
>> -		return PTR_ERR((__force void *)scp->sram_base);
>> -	}
>> +	if (IS_ERR(scp->sram_base))
>> +		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
>> +				     "Failed to parse and map sram memory\n");
>> +
>>   	scp->sram_size = resource_size(res);
>>   	scp->sram_phys = res->start;
>>   
>>   	/* l1tcm is an optional memory region */
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
>>   	scp->l1tcm_base = devm_ioremap_resource(dev, res);
>> -	if (IS_ERR((__force void *)scp->l1tcm_base)) {
>> -		ret = PTR_ERR((__force void *)scp->l1tcm_base);
>> +	if (IS_ERR(scp->l1tcm_base)) {
>> +		ret = PTR_ERR(scp->l1tcm_base);
>>   		if (ret != -EINVAL) {
>> -			dev_err(dev, "Failed to map l1tcm memory\n");
>> -			return ret;
>> +			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
>>   		}
>>   	} else {
>>   		scp->l1tcm_size = resource_size(res);
>> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
>>   	}
>>   
>>   	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
>> -	if (IS_ERR((__force void *)scp->reg_base)) {
>> -		dev_err(dev, "Failed to parse and map cfg memory\n");
>> -		return PTR_ERR((__force void *)scp->reg_base);
>> -	}
>> +	if (IS_ERR(scp->reg_base))
>> +		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
>> +				     "Failed to parse and map cfg memory\n");
>>   
>>   	ret = scp->data->scp_clk_get(scp);
>>   	if (ret)
>> -- 
>> 2.33.1
>>


-- 
AngeloGioacchino Del Regno
Software Engineer

Collabora Ltd.
Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
Registered in England & Wales, no. 5513718

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[AngeloGioacchino Del Regno]

Il 01/02/22 19:36, Mathieu Poirier ha scritto:
> Hi Angelo,
> 
> On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
>> Simplify the probe function, where possible, by using dev_err_probe().
>> While at it, as to increase human readability, also remove some
>> unnecessary forced void pointer casts that were previously used in
>> error checking.
> 
> I am in favour of all 3 patches (please add a cover letter next time) but weary
> about testing - do you have access to a Mediatek platform to try this on or
> is it purely theoretical?
> 
> I would definitely feel better to see a "Tested-by" tag by someone out there
> with access to the HW.
> 
> Thanks,
> Mathieu
> 

Hello Mathieu,

I have multiple MediaTek platforms and I always test on all of them before
pushing such commits upstream, so, even though this kind of patch is trivial,
this is *not* purely theoretical and I confirm that this was successfully tested.

Regards,
Angelo

>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>>   drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
>>   1 file changed, 12 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
>> index e40706b0e015..dcddb33e9997 100644
>> --- a/drivers/remoteproc/mtk_scp.c
>> +++ b/drivers/remoteproc/mtk_scp.c
>> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
>>   	int ret, i;
>>   
>>   	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
>> -	if (!rproc) {
>> -		dev_err(dev, "unable to allocate remoteproc\n");
>> -		return -ENOMEM;
>> -	}
>> +	if (!rproc)
>> +		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
>>   
>>   	scp = (struct mtk_scp *)rproc->priv;
>>   	scp->rproc = rproc;
>> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
>>   
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
>>   	scp->sram_base = devm_ioremap_resource(dev, res);
>> -	if (IS_ERR((__force void *)scp->sram_base)) {
>> -		dev_err(dev, "Failed to parse and map sram memory\n");
>> -		return PTR_ERR((__force void *)scp->sram_base);
>> -	}
>> +	if (IS_ERR(scp->sram_base))
>> +		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
>> +				     "Failed to parse and map sram memory\n");
>> +
>>   	scp->sram_size = resource_size(res);
>>   	scp->sram_phys = res->start;
>>   
>>   	/* l1tcm is an optional memory region */
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
>>   	scp->l1tcm_base = devm_ioremap_resource(dev, res);
>> -	if (IS_ERR((__force void *)scp->l1tcm_base)) {
>> -		ret = PTR_ERR((__force void *)scp->l1tcm_base);
>> +	if (IS_ERR(scp->l1tcm_base)) {
>> +		ret = PTR_ERR(scp->l1tcm_base);
>>   		if (ret != -EINVAL) {
>> -			dev_err(dev, "Failed to map l1tcm memory\n");
>> -			return ret;
>> +			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
>>   		}
>>   	} else {
>>   		scp->l1tcm_size = resource_size(res);
>> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
>>   	}
>>   
>>   	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
>> -	if (IS_ERR((__force void *)scp->reg_base)) {
>> -		dev_err(dev, "Failed to parse and map cfg memory\n");
>> -		return PTR_ERR((__force void *)scp->reg_base);
>> -	}
>> +	if (IS_ERR(scp->reg_base))
>> +		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
>> +				     "Failed to parse and map cfg memory\n");
>>   
>>   	ret = scp->data->scp_clk_get(scp);
>>   	if (ret)
>> -- 
>> 2.33.1
>>


-- 
AngeloGioacchino Del Regno
Software Engineer

Collabora Ltd.
Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
Registered in England & Wales, no. 5513718

_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[AngeloGioacchino Del Regno]

Il 01/02/22 19:36, Mathieu Poirier ha scritto:
> Hi Angelo,
> 
> On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
>> Simplify the probe function, where possible, by using dev_err_probe().
>> While at it, as to increase human readability, also remove some
>> unnecessary forced void pointer casts that were previously used in
>> error checking.
> 
> I am in favour of all 3 patches (please add a cover letter next time) but weary
> about testing - do you have access to a Mediatek platform to try this on or
> is it purely theoretical?
> 
> I would definitely feel better to see a "Tested-by" tag by someone out there
> with access to the HW.
> 
> Thanks,
> Mathieu
> 

Hello Mathieu,

I have multiple MediaTek platforms and I always test on all of them before
pushing such commits upstream, so, even though this kind of patch is trivial,
this is *not* purely theoretical and I confirm that this was successfully tested.

Regards,
Angelo

>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>>   drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
>>   1 file changed, 12 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
>> index e40706b0e015..dcddb33e9997 100644
>> --- a/drivers/remoteproc/mtk_scp.c
>> +++ b/drivers/remoteproc/mtk_scp.c
>> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
>>   	int ret, i;
>>   
>>   	rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
>> -	if (!rproc) {
>> -		dev_err(dev, "unable to allocate remoteproc\n");
>> -		return -ENOMEM;
>> -	}
>> +	if (!rproc)
>> +		return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
>>   
>>   	scp = (struct mtk_scp *)rproc->priv;
>>   	scp->rproc = rproc;
>> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
>>   
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
>>   	scp->sram_base = devm_ioremap_resource(dev, res);
>> -	if (IS_ERR((__force void *)scp->sram_base)) {
>> -		dev_err(dev, "Failed to parse and map sram memory\n");
>> -		return PTR_ERR((__force void *)scp->sram_base);
>> -	}
>> +	if (IS_ERR(scp->sram_base))
>> +		return dev_err_probe(dev, PTR_ERR(scp->sram_base),
>> +				     "Failed to parse and map sram memory\n");
>> +
>>   	scp->sram_size = resource_size(res);
>>   	scp->sram_phys = res->start;
>>   
>>   	/* l1tcm is an optional memory region */
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
>>   	scp->l1tcm_base = devm_ioremap_resource(dev, res);
>> -	if (IS_ERR((__force void *)scp->l1tcm_base)) {
>> -		ret = PTR_ERR((__force void *)scp->l1tcm_base);
>> +	if (IS_ERR(scp->l1tcm_base)) {
>> +		ret = PTR_ERR(scp->l1tcm_base);
>>   		if (ret != -EINVAL) {
>> -			dev_err(dev, "Failed to map l1tcm memory\n");
>> -			return ret;
>> +			return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
>>   		}
>>   	} else {
>>   		scp->l1tcm_size = resource_size(res);
>> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
>>   	}
>>   
>>   	scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
>> -	if (IS_ERR((__force void *)scp->reg_base)) {
>> -		dev_err(dev, "Failed to parse and map cfg memory\n");
>> -		return PTR_ERR((__force void *)scp->reg_base);
>> -	}
>> +	if (IS_ERR(scp->reg_base))
>> +		return dev_err_probe(dev, PTR_ERR(scp->reg_base),
>> +				     "Failed to parse and map cfg memory\n");
>>   
>>   	ret = scp->data->scp_clk_get(scp);
>>   	if (ret)
>> -- 
>> 2.33.1
>>


-- 
AngeloGioacchino Del Regno
Software Engineer

Collabora Ltd.
Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
Registered in England & Wales, no. 5513718

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[Mathieu Poirier]

On Wed, 2 Feb 2022 at 02:03, AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Il 01/02/22 19:36, Mathieu Poirier ha scritto:
> > Hi Angelo,
> >
> > On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
> >> Simplify the probe function, where possible, by using dev_err_probe().
> >> While at it, as to increase human readability, also remove some
> >> unnecessary forced void pointer casts that were previously used in
> >> error checking.
> >
> > I am in favour of all 3 patches (please add a cover letter next time) but weary
> > about testing - do you have access to a Mediatek platform to try this on or
> > is it purely theoretical?
> >
> > I would definitely feel better to see a "Tested-by" tag by someone out there
> > with access to the HW.
> >
> > Thanks,
> > Mathieu
> >
>
> Hello Mathieu,
>
> I have multiple MediaTek platforms and I always test on all of them before
> pushing such commits upstream, so, even though this kind of patch is trivial,
> this is *not* purely theoretical and I confirm that this was successfully tested.

 I have applied all 3 patches.

>
> Regards,
> Angelo
>
> >>
> >> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> >> ---
> >>   drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
> >>   1 file changed, 12 insertions(+), 16 deletions(-)
> >>
> >> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> >> index e40706b0e015..dcddb33e9997 100644
> >> --- a/drivers/remoteproc/mtk_scp.c
> >> +++ b/drivers/remoteproc/mtk_scp.c
> >> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
> >>      int ret, i;
> >>
> >>      rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
> >> -    if (!rproc) {
> >> -            dev_err(dev, "unable to allocate remoteproc\n");
> >> -            return -ENOMEM;
> >> -    }
> >> +    if (!rproc)
> >> +            return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
> >>
> >>      scp = (struct mtk_scp *)rproc->priv;
> >>      scp->rproc = rproc;
> >> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
> >>
> >>      res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
> >>      scp->sram_base = devm_ioremap_resource(dev, res);
> >> -    if (IS_ERR((__force void *)scp->sram_base)) {
> >> -            dev_err(dev, "Failed to parse and map sram memory\n");
> >> -            return PTR_ERR((__force void *)scp->sram_base);
> >> -    }
> >> +    if (IS_ERR(scp->sram_base))
> >> +            return dev_err_probe(dev, PTR_ERR(scp->sram_base),
> >> +                                 "Failed to parse and map sram memory\n");
> >> +
> >>      scp->sram_size = resource_size(res);
> >>      scp->sram_phys = res->start;
> >>
> >>      /* l1tcm is an optional memory region */
> >>      res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
> >>      scp->l1tcm_base = devm_ioremap_resource(dev, res);
> >> -    if (IS_ERR((__force void *)scp->l1tcm_base)) {
> >> -            ret = PTR_ERR((__force void *)scp->l1tcm_base);
> >> +    if (IS_ERR(scp->l1tcm_base)) {
> >> +            ret = PTR_ERR(scp->l1tcm_base);
> >>              if (ret != -EINVAL) {
> >> -                    dev_err(dev, "Failed to map l1tcm memory\n");
> >> -                    return ret;
> >> +                    return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
> >>              }
> >>      } else {
> >>              scp->l1tcm_size = resource_size(res);
> >> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
> >>      }
> >>
> >>      scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
> >> -    if (IS_ERR((__force void *)scp->reg_base)) {
> >> -            dev_err(dev, "Failed to parse and map cfg memory\n");
> >> -            return PTR_ERR((__force void *)scp->reg_base);
> >> -    }
> >> +    if (IS_ERR(scp->reg_base))
> >> +            return dev_err_probe(dev, PTR_ERR(scp->reg_base),
> >> +                                 "Failed to parse and map cfg memory\n");
> >>
> >>      ret = scp->data->scp_clk_get(scp);
> >>      if (ret)
> >> --
> >> 2.33.1
> >>
>
>
> --
> AngeloGioacchino Del Regno
> Software Engineer
>
> Collabora Ltd.
> Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
> Registered in England & Wales, no. 5513718

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[Mathieu Poirier]

On Wed, 2 Feb 2022 at 02:03, AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Il 01/02/22 19:36, Mathieu Poirier ha scritto:
> > Hi Angelo,
> >
> > On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
> >> Simplify the probe function, where possible, by using dev_err_probe().
> >> While at it, as to increase human readability, also remove some
> >> unnecessary forced void pointer casts that were previously used in
> >> error checking.
> >
> > I am in favour of all 3 patches (please add a cover letter next time) but weary
> > about testing - do you have access to a Mediatek platform to try this on or
> > is it purely theoretical?
> >
> > I would definitely feel better to see a "Tested-by" tag by someone out there
> > with access to the HW.
> >
> > Thanks,
> > Mathieu
> >
>
> Hello Mathieu,
>
> I have multiple MediaTek platforms and I always test on all of them before
> pushing such commits upstream, so, even though this kind of patch is trivial,
> this is *not* purely theoretical and I confirm that this was successfully tested.

 I have applied all 3 patches.

>
> Regards,
> Angelo
>
> >>
> >> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> >> ---
> >>   drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
> >>   1 file changed, 12 insertions(+), 16 deletions(-)
> >>
> >> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> >> index e40706b0e015..dcddb33e9997 100644
> >> --- a/drivers/remoteproc/mtk_scp.c
> >> +++ b/drivers/remoteproc/mtk_scp.c
> >> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
> >>      int ret, i;
> >>
> >>      rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
> >> -    if (!rproc) {
> >> -            dev_err(dev, "unable to allocate remoteproc\n");
> >> -            return -ENOMEM;
> >> -    }
> >> +    if (!rproc)
> >> +            return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
> >>
> >>      scp = (struct mtk_scp *)rproc->priv;
> >>      scp->rproc = rproc;
> >> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
> >>
> >>      res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
> >>      scp->sram_base = devm_ioremap_resource(dev, res);
> >> -    if (IS_ERR((__force void *)scp->sram_base)) {
> >> -            dev_err(dev, "Failed to parse and map sram memory\n");
> >> -            return PTR_ERR((__force void *)scp->sram_base);
> >> -    }
> >> +    if (IS_ERR(scp->sram_base))
> >> +            return dev_err_probe(dev, PTR_ERR(scp->sram_base),
> >> +                                 "Failed to parse and map sram memory\n");
> >> +
> >>      scp->sram_size = resource_size(res);
> >>      scp->sram_phys = res->start;
> >>
> >>      /* l1tcm is an optional memory region */
> >>      res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
> >>      scp->l1tcm_base = devm_ioremap_resource(dev, res);
> >> -    if (IS_ERR((__force void *)scp->l1tcm_base)) {
> >> -            ret = PTR_ERR((__force void *)scp->l1tcm_base);
> >> +    if (IS_ERR(scp->l1tcm_base)) {
> >> +            ret = PTR_ERR(scp->l1tcm_base);
> >>              if (ret != -EINVAL) {
> >> -                    dev_err(dev, "Failed to map l1tcm memory\n");
> >> -                    return ret;
> >> +                    return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
> >>              }
> >>      } else {
> >>              scp->l1tcm_size = resource_size(res);
> >> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
> >>      }
> >>
> >>      scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
> >> -    if (IS_ERR((__force void *)scp->reg_base)) {
> >> -            dev_err(dev, "Failed to parse and map cfg memory\n");
> >> -            return PTR_ERR((__force void *)scp->reg_base);
> >> -    }
> >> +    if (IS_ERR(scp->reg_base))
> >> +            return dev_err_probe(dev, PTR_ERR(scp->reg_base),
> >> +                                 "Failed to parse and map cfg memory\n");
> >>
> >>      ret = scp->data->scp_clk_get(scp);
> >>      if (ret)
> >> --
> >> 2.33.1
> >>
>
>
> --
> AngeloGioacchino Del Regno
> Software Engineer
>
> Collabora Ltd.
> Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
> Registered in England & Wales, no. 5513718

_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

Re: [PATCH 3/3] remoteproc: mtk_scp: Use dev_err_probe() where possible

[Mathieu Poirier]

On Wed, 2 Feb 2022 at 02:03, AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> Il 01/02/22 19:36, Mathieu Poirier ha scritto:
> > Hi Angelo,
> >
> > On Mon, Jan 24, 2022 at 01:09:15PM +0100, AngeloGioacchino Del Regno wrote:
> >> Simplify the probe function, where possible, by using dev_err_probe().
> >> While at it, as to increase human readability, also remove some
> >> unnecessary forced void pointer casts that were previously used in
> >> error checking.
> >
> > I am in favour of all 3 patches (please add a cover letter next time) but weary
> > about testing - do you have access to a Mediatek platform to try this on or
> > is it purely theoretical?
> >
> > I would definitely feel better to see a "Tested-by" tag by someone out there
> > with access to the HW.
> >
> > Thanks,
> > Mathieu
> >
>
> Hello Mathieu,
>
> I have multiple MediaTek platforms and I always test on all of them before
> pushing such commits upstream, so, even though this kind of patch is trivial,
> this is *not* purely theoretical and I confirm that this was successfully tested.

 I have applied all 3 patches.

>
> Regards,
> Angelo
>
> >>
> >> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> >> ---
> >>   drivers/remoteproc/mtk_scp.c | 28 ++++++++++++----------------
> >>   1 file changed, 12 insertions(+), 16 deletions(-)
> >>
> >> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> >> index e40706b0e015..dcddb33e9997 100644
> >> --- a/drivers/remoteproc/mtk_scp.c
> >> +++ b/drivers/remoteproc/mtk_scp.c
> >> @@ -757,10 +757,8 @@ static int scp_probe(struct platform_device *pdev)
> >>      int ret, i;
> >>
> >>      rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
> >> -    if (!rproc) {
> >> -            dev_err(dev, "unable to allocate remoteproc\n");
> >> -            return -ENOMEM;
> >> -    }
> >> +    if (!rproc)
> >> +            return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
> >>
> >>      scp = (struct mtk_scp *)rproc->priv;
> >>      scp->rproc = rproc;
> >> @@ -770,21 +768,20 @@ static int scp_probe(struct platform_device *pdev)
> >>
> >>      res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
> >>      scp->sram_base = devm_ioremap_resource(dev, res);
> >> -    if (IS_ERR((__force void *)scp->sram_base)) {
> >> -            dev_err(dev, "Failed to parse and map sram memory\n");
> >> -            return PTR_ERR((__force void *)scp->sram_base);
> >> -    }
> >> +    if (IS_ERR(scp->sram_base))
> >> +            return dev_err_probe(dev, PTR_ERR(scp->sram_base),
> >> +                                 "Failed to parse and map sram memory\n");
> >> +
> >>      scp->sram_size = resource_size(res);
> >>      scp->sram_phys = res->start;
> >>
> >>      /* l1tcm is an optional memory region */
> >>      res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
> >>      scp->l1tcm_base = devm_ioremap_resource(dev, res);
> >> -    if (IS_ERR((__force void *)scp->l1tcm_base)) {
> >> -            ret = PTR_ERR((__force void *)scp->l1tcm_base);
> >> +    if (IS_ERR(scp->l1tcm_base)) {
> >> +            ret = PTR_ERR(scp->l1tcm_base);
> >>              if (ret != -EINVAL) {
> >> -                    dev_err(dev, "Failed to map l1tcm memory\n");
> >> -                    return ret;
> >> +                    return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
> >>              }
> >>      } else {
> >>              scp->l1tcm_size = resource_size(res);
> >> @@ -792,10 +789,9 @@ static int scp_probe(struct platform_device *pdev)
> >>      }
> >>
> >>      scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
> >> -    if (IS_ERR((__force void *)scp->reg_base)) {
> >> -            dev_err(dev, "Failed to parse and map cfg memory\n");
> >> -            return PTR_ERR((__force void *)scp->reg_base);
> >> -    }
> >> +    if (IS_ERR(scp->reg_base))
> >> +            return dev_err_probe(dev, PTR_ERR(scp->reg_base),
> >> +                                 "Failed to parse and map cfg memory\n");
> >>
> >>      ret = scp->data->scp_clk_get(scp);
> >>      if (ret)
> >> --
> >> 2.33.1
> >>
>
>
> --
> AngeloGioacchino Del Regno
> Software Engineer
>
> Collabora Ltd.
> Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
> Registered in England & Wales, no. 5513718

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel