[PATCH v2 1/2] bus: bt1-apb: Don't print error on -EPROBE_DEFER

[PATCH v2 1/2] bus: bt1-apb: Don't print error on -EPROBE_DEFER

[Serge Semin]

The Baikal-T1 APB bus driver correctly handles the deferred probe
situation, but still pollutes the system log with a misleading error
message. Let's fix that by using the dev_err_probe() method to print the
log message in case of the clocks/resets request errors.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>

---

Link: https://lore.kernel.org/lkml/20220610080103.10689-1-Sergey.Semin@baikalelectronics.ru/
Changelog v2:
- Use the dev_err_probe() return value as the return status of the
  corresponding method. (@Philipp)
---
 drivers/bus/bt1-apb.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/bus/bt1-apb.c b/drivers/bus/bt1-apb.c
index b25ff941e7c7..63b1b4a76671 100644
--- a/drivers/bus/bt1-apb.c
+++ b/drivers/bus/bt1-apb.c
@@ -175,10 +175,9 @@ static int bt1_apb_request_rst(struct bt1_apb *apb)
 	int ret;
 
 	apb->prst = devm_reset_control_get_optional_exclusive(apb->dev, "prst");
-	if (IS_ERR(apb->prst)) {
-		dev_warn(apb->dev, "Couldn't get reset control line\n");
-		return PTR_ERR(apb->prst);
-	}
+	if (IS_ERR(apb->prst))
+		return dev_err_probe(apb->dev, PTR_ERR(apb->prst),
+				     "Couldn't get reset control line\n");
 
 	ret = reset_control_deassert(apb->prst);
 	if (ret)
@@ -199,10 +198,9 @@ static int bt1_apb_request_clk(struct bt1_apb *apb)
 	int ret;
 
 	apb->pclk = devm_clk_get(apb->dev, "pclk");
-	if (IS_ERR(apb->pclk)) {
-		dev_err(apb->dev, "Couldn't get APB clock descriptor\n");
-		return PTR_ERR(apb->pclk);
-	}
+	if (IS_ERR(apb->pclk))
+		return dev_err_probe(apb->dev, PTR_ERR(apb->pclk),
+				     "Couldn't get APB clock descriptor\n");
 
 	ret = clk_prepare_enable(apb->pclk);
 	if (ret) {
-- 
2.35.1

[PATCH v2 2/2] bus: bt1-axi: Don't print error on -EPROBE_DEFER

[Serge Semin]

The Baikal-T1 AXI bus driver correctly handles the deferred probe
situation, but still pollutes the system log with a misleading error
message. Let's fix that by using the dev_err_probe() method to print the
log message in case of the clocks/resets request errors.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>

---

Link: https://lore.kernel.org/lkml/20220610080103.10689-1-Sergey.Semin@baikalelectronics.ru/
Changelog v2:
- Use the dev_err_probe() return value as the return status of the
  corresponding method. (@Philipp)
---
 drivers/bus/bt1-axi.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/bus/bt1-axi.c b/drivers/bus/bt1-axi.c
index e7a6744acc7b..70e49a6e5374 100644
--- a/drivers/bus/bt1-axi.c
+++ b/drivers/bus/bt1-axi.c
@@ -135,10 +135,9 @@ static int bt1_axi_request_rst(struct bt1_axi *axi)
 	int ret;
 
 	axi->arst = devm_reset_control_get_optional_exclusive(axi->dev, "arst");
-	if (IS_ERR(axi->arst)) {
-		dev_warn(axi->dev, "Couldn't get reset control line\n");
-		return PTR_ERR(axi->arst);
-	}
+	if (IS_ERR(axi->arst))
+		return dev_err_probe(axi->dev, PTR_ERR(axi->arst),
+				     "Couldn't get reset control line\n");
 
 	ret = reset_control_deassert(axi->arst);
 	if (ret)
@@ -159,10 +158,9 @@ static int bt1_axi_request_clk(struct bt1_axi *axi)
 	int ret;
 
 	axi->aclk = devm_clk_get(axi->dev, "aclk");
-	if (IS_ERR(axi->aclk)) {
-		dev_err(axi->dev, "Couldn't get AXI Interconnect clock\n");
-		return PTR_ERR(axi->aclk);
-	}
+	if (IS_ERR(axi->aclk))
+		return dev_err_probe(axi->dev, PTR_ERR(axi->aclk),
+				     "Couldn't get AXI Interconnect clock\n");
 
 	ret = clk_prepare_enable(axi->aclk);
 	if (ret) {
-- 
2.35.1

Re: [PATCH v2 1/2] bus: bt1-apb: Don't print error on -EPROBE_DEFER

[patchwork-bot+linux-soc]

Hello:

This series was applied to soc/soc.git (arm/fixes)
by Arnd Bergmann <arnd@arndb.de>:

On Fri, 10 Jun 2022 13:40:29 +0300 you wrote:
> The Baikal-T1 APB bus driver correctly handles the deferred probe
> situation, but still pollutes the system log with a misleading error
> message. Let's fix that by using the dev_err_probe() method to print the
> log message in case of the clocks/resets request errors.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> 
> [...]

Here is the summary with links:
  - [v2,1/2] bus: bt1-apb: Don't print error on -EPROBE_DEFER
    https://git.kernel.org/soc/soc/c/be5cddef05f5
  - [v2,2/2] bus: bt1-axi: Don't print error on -EPROBE_DEFER
    https://git.kernel.org/soc/soc/c/5e93207e962a

You are awesome, thank you!
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