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From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: mathieu.poirier@linaro.org, suzuki.poulose@arm.com,
	mike.leach@linaro.org, leo.yan@linaro.org,
	alexander.shishkin@linux.intel.com, mcoquelin.stm32@gmail.com,
	alexandre.torgue@foss.st.com
Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH v2] coresight: Use devm_bitmap_zalloc when applicable
Date: Wed,  3 Nov 2021 19:39:18 +0100	[thread overview]
Message-ID: <a4b8454f560b70cedf0e4d06275787f08d576ee5.1635964610.git.christophe.jaillet@wanadoo.fr> (raw)

'drvdata->chs.guaranteed' is a bitmap. So use 'devm_bitmap_kzalloc()' to
simplify code, improve the semantic and avoid some open-coded arithmetic
in allocator arguments.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
v1 --> v2: remove the 'guaranteed' variable to be even less verbose
---
 drivers/hwtracing/coresight/coresight-stm.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
index 58062a5a8238..bb14a3a8a921 100644
--- a/drivers/hwtracing/coresight/coresight-stm.c
+++ b/drivers/hwtracing/coresight/coresight-stm.c
@@ -856,13 +856,11 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
 {
 	int ret;
 	void __iomem *base;
-	unsigned long *guaranteed;
 	struct device *dev = &adev->dev;
 	struct coresight_platform_data *pdata = NULL;
 	struct stm_drvdata *drvdata;
 	struct resource *res = &adev->res;
 	struct resource ch_res;
-	size_t bitmap_size;
 	struct coresight_desc desc = { 0 };
 
 	desc.name = coresight_alloc_device_name(&stm_devs, dev);
@@ -904,12 +902,10 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
 	else
 		drvdata->numsp = stm_num_stimulus_port(drvdata);
 
-	bitmap_size = BITS_TO_LONGS(drvdata->numsp) * sizeof(long);
-
-	guaranteed = devm_kzalloc(dev, bitmap_size, GFP_KERNEL);
-	if (!guaranteed)
+	drvdata->chs.guaranteed = devm_bitmap_zalloc(dev, drvdata->numsp,
+						     GFP_KERNEL);
+	if (!drvdata->chs.guaranteed)
 		return -ENOMEM;
-	drvdata->chs.guaranteed = guaranteed;
 
 	spin_lock_init(&drvdata->spinlock);
 
-- 
2.30.2


WARNING: multiple messages have this Message-ID (diff)
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: mathieu.poirier@linaro.org, suzuki.poulose@arm.com,
	mike.leach@linaro.org, leo.yan@linaro.org,
	alexander.shishkin@linux.intel.com, mcoquelin.stm32@gmail.com,
	alexandre.torgue@foss.st.com
Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH v2] coresight: Use devm_bitmap_zalloc when applicable
Date: Wed,  3 Nov 2021 19:39:18 +0100	[thread overview]
Message-ID: <a4b8454f560b70cedf0e4d06275787f08d576ee5.1635964610.git.christophe.jaillet@wanadoo.fr> (raw)

'drvdata->chs.guaranteed' is a bitmap. So use 'devm_bitmap_kzalloc()' to
simplify code, improve the semantic and avoid some open-coded arithmetic
in allocator arguments.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
v1 --> v2: remove the 'guaranteed' variable to be even less verbose
---
 drivers/hwtracing/coresight/coresight-stm.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
index 58062a5a8238..bb14a3a8a921 100644
--- a/drivers/hwtracing/coresight/coresight-stm.c
+++ b/drivers/hwtracing/coresight/coresight-stm.c
@@ -856,13 +856,11 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
 {
 	int ret;
 	void __iomem *base;
-	unsigned long *guaranteed;
 	struct device *dev = &adev->dev;
 	struct coresight_platform_data *pdata = NULL;
 	struct stm_drvdata *drvdata;
 	struct resource *res = &adev->res;
 	struct resource ch_res;
-	size_t bitmap_size;
 	struct coresight_desc desc = { 0 };
 
 	desc.name = coresight_alloc_device_name(&stm_devs, dev);
@@ -904,12 +902,10 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
 	else
 		drvdata->numsp = stm_num_stimulus_port(drvdata);
 
-	bitmap_size = BITS_TO_LONGS(drvdata->numsp) * sizeof(long);
-
-	guaranteed = devm_kzalloc(dev, bitmap_size, GFP_KERNEL);
-	if (!guaranteed)
+	drvdata->chs.guaranteed = devm_bitmap_zalloc(dev, drvdata->numsp,
+						     GFP_KERNEL);
+	if (!drvdata->chs.guaranteed)
 		return -ENOMEM;
-	drvdata->chs.guaranteed = guaranteed;
 
 	spin_lock_init(&drvdata->spinlock);
 
-- 
2.30.2


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             reply	other threads:[~2021-11-03 18:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-03 18:39 Christophe JAILLET [this message]
2021-11-03 18:39 ` [PATCH v2] coresight: Use devm_bitmap_zalloc when applicable Christophe JAILLET
2021-11-11 18:25 ` Mathieu Poirier
2021-11-11 18:25   ` Mathieu Poirier

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