Re: [PATCH 19/21] usb: chipidea: msm: Be silent on probe defer errors

Peter Chen
2016-06-30T01:28:26Z

On Sun, Jun 26, 2016 at 12:28:36AM -0700, Stephen Boyd wrote:
> If something fails in ci_hdrc_add_device() due to probe defer, we
> shouldn't print an error message. Be silent in this case as we'll
> try probe again later.
>
> Cc: Peter Chen <peter.chen@nxp.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
> ---
> drivers/usb/chipidea/ci_hdrc_msm.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c
> index 7d191928e55b..2ed9a181f4b6 100644
> --- a/drivers/usb/chipidea/ci_hdrc_msm.c
> +++ b/drivers/usb/chipidea/ci_hdrc_msm.c
> @@ -241,7 +241,8 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev)
> plat_ci = ci_hdrc_add_device(&pdev->dev, pdev->resource,
> pdev->num_resources, &ci->pdata);
> if (IS_ERR(plat_ci)) {
> - dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
> + if (PTR_ERR(plat_ci) != -EPROBE_DEFER)
> + dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
> ret = PTR_ERR(plat_ci);
> goto err_mux;
> }

Why not let ret equals to PTR_ERR(plat_ci) first, and using ret to
compare?

--

Best Regards,
Peter Chen