diff mbox

[v2] PCI: armada8k: Check the return value from clk_prepare_enable()

Message ID 1500755119-19983-1-git-send-email-festevam@gmail.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Fabio Estevam July 22, 2017, 8:25 p.m. UTC
From: Fabio Estevam <fabio.estevam@nxp.com>

clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
---
Changes since v1:
- Improve Subject style

 drivers/pci/dwc/pcie-armada8k.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Thomas Petazzoni July 22, 2017, 8:31 p.m. UTC | #1
Hello,

On Sat, 22 Jul 2017 17:25:19 -0300, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@nxp.com>
> 
> clk_prepare_enable() may fail, so we should better check its return value
> and propagate it in the case of error.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>

Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Thanks!

Thomas
Bjorn Helgaas Aug. 3, 2017, 10:02 p.m. UTC | #2
On Sat, Jul 22, 2017 at 05:25:19PM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@nxp.com>
> 
> clk_prepare_enable() may fail, so we should better check its return value
> and propagate it in the case of error.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>

Applied with Thomas' ack to pci/host-armada for v4.14, thanks!

> ---
> Changes since v1:
> - Improve Subject style
> 
>  drivers/pci/dwc/pcie-armada8k.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/dwc/pcie-armada8k.c b/drivers/pci/dwc/pcie-armada8k.c
> index ea8f34a..7297223 100644
> --- a/drivers/pci/dwc/pcie-armada8k.c
> +++ b/drivers/pci/dwc/pcie-armada8k.c
> @@ -226,7 +226,9 @@ static int armada8k_pcie_probe(struct platform_device *pdev)
>  	if (IS_ERR(pcie->clk))
>  		return PTR_ERR(pcie->clk);
>  
> -	clk_prepare_enable(pcie->clk);
> +	ret = clk_prepare_enable(pcie->clk);
> +	if (ret)
> +		return ret;
>  
>  	/* Get the dw-pcie unit configuration/control registers base. */
>  	base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl");
> -- 
> 2.7.4
>
diff mbox

Patch

diff --git a/drivers/pci/dwc/pcie-armada8k.c b/drivers/pci/dwc/pcie-armada8k.c
index ea8f34a..7297223 100644
--- a/drivers/pci/dwc/pcie-armada8k.c
+++ b/drivers/pci/dwc/pcie-armada8k.c
@@ -226,7 +226,9 @@  static int armada8k_pcie_probe(struct platform_device *pdev)
 	if (IS_ERR(pcie->clk))
 		return PTR_ERR(pcie->clk);
 
-	clk_prepare_enable(pcie->clk);
+	ret = clk_prepare_enable(pcie->clk);
+	if (ret)
+		return ret;
 
 	/* Get the dw-pcie unit configuration/control registers base. */
 	base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl");