Re: [PATCH 1/3] remoteproc/davinci: add the missing retval check for clk_enable()

From: Bjorn Andersson
Date: Wed May 09 2018 - 17:31:53 EST


On Wed 02 May 02:56 PDT 2018, Bartosz Golaszewski wrote:

> From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
>
> The davinci platform is being switched to using the common clock
> framework, where clk_enable() can fail. Add the return value check.
>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
> Acked-by: Suman Anna <s-anna@xxxxxx>
> Reviewed-by: David Lechner <david@xxxxxxxxxxxxxx>
> Reviewed-by: Sekhar Nori <nsekhar@xxxxxx>

Hi Bartosz,

All three patches applied to rproc-next.

Regards,
Bjorn

> ---
> drivers/remoteproc/da8xx_remoteproc.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/remoteproc/da8xx_remoteproc.c b/drivers/remoteproc/da8xx_remoteproc.c
> index bf3b9034c319..2b24291337b7 100644
> --- a/drivers/remoteproc/da8xx_remoteproc.c
> +++ b/drivers/remoteproc/da8xx_remoteproc.c
> @@ -138,6 +138,7 @@ static int da8xx_rproc_start(struct rproc *rproc)
> struct device *dev = rproc->dev.parent;
> struct da8xx_rproc *drproc = (struct da8xx_rproc *)rproc->priv;
> struct clk *dsp_clk = drproc->dsp_clk;
> + int ret;
>
> /* hw requires the start (boot) address be on 1KB boundary */
> if (rproc->bootaddr & 0x3ff) {
> @@ -148,7 +149,12 @@ static int da8xx_rproc_start(struct rproc *rproc)
>
> writel(rproc->bootaddr, drproc->bootreg);
>
> - clk_enable(dsp_clk);
> + ret = clk_enable(dsp_clk);
> + if (ret) {
> + dev_err(dev, "clk_enable() failed: %d\n", ret);
> + return ret;
> + }
> +
> davinci_clk_reset_deassert(dsp_clk);
>
> return 0;
> --
> 2.17.0
>