Hi Sachin,
On 05/02/2013 07:03 AM, Sachin Kamat wrote:
> NULL check on clocks obtained using common clock APIs should not
> be done. Use IS_ERR only.
>
> Signed-off-by: Sachin Kamat <sachin.ka...@linaro.org>
> ---
> Changes since v1:
> Initialised clocks to invalid value.
> ---
> drivers/media/platform/s5p-tv/hdmi_drv.c | 18 ++++++++++++------
> 1 file changed, 12 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/s5p-tv/hdmi_drv.c
> b/drivers/media/platform/s5p-tv/hdmi_drv.c
> index 4e86626..ed1a695 100644
> --- a/drivers/media/platform/s5p-tv/hdmi_drv.c
> +++ b/drivers/media/platform/s5p-tv/hdmi_drv.c
> @@ -765,15 +765,15 @@ static void hdmi_resources_cleanup(struct hdmi_device
> *hdev)
> regulator_bulk_free(res->regul_count, res->regul_bulk);
> /* kfree is NULL-safe */
> kfree(res->regul_bulk);
> - if (!IS_ERR_OR_NULL(res->hdmiphy))
> + if (!IS_ERR(res->hdmiphy))
> clk_put(res->hdmiphy);
> - if (!IS_ERR_OR_NULL(res->sclk_hdmiphy))
> + if (!IS_ERR(res->sclk_hdmiphy))
> clk_put(res->sclk_hdmiphy);
> - if (!IS_ERR_OR_NULL(res->sclk_pixel))
> + if (!IS_ERR(res->sclk_pixel))
> clk_put(res->sclk_pixel);
> - if (!IS_ERR_OR_NULL(res->sclk_hdmi))
> + if (!IS_ERR(res->sclk_hdmi))
> clk_put(res->sclk_hdmi);
> - if (!IS_ERR_OR_NULL(res->hdmi))
> + if (!IS_ERR(res->hdmi))
> clk_put(res->hdmi);
> memset(res, 0, sizeof(*res));
Shouldn't this memset be removed not ? Then res->regul_count would need to
be set to 0.
> }
> @@ -793,8 +793,14 @@ static int hdmi_resources_init(struct hdmi_device *hdev)
> dev_dbg(dev, "HDMI resource init\n");
>
> memset(res, 0, sizeof(*res));
This could be replaced with
res->regul_count = 0;
> - /* get clocks, power */
>
> + res->hdmi = ERR_PTR(-EINVAL);
You could remove this line, as res->sclk_hdmi will be set by clk_get()
right below.
> + res->sclk_hdmi = ERR_PTR(-EINVAL);
> + res->sclk_pixel = ERR_PTR(-EINVAL);
> + res->sclk_hdmiphy = ERR_PTR(-EINVAL);
> + res->hdmiphy = ERR_PTR(-EINVAL);
> +
> + /* get clocks, power */
> res->hdmi = clk_get(dev, "hdmi");
> if (IS_ERR(res->hdmi)) {
> dev_err(dev, "failed to get clock 'hdmi'\n");
>
Regards,
Sylwester
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