Re: [PATCH] clk: samsung: exynos5420: Remove useless check for return value of samsung_clk_init

Javier Martinez Canillas
2016-05-09T13:32:47Z

Hello Krzysztof,

On 05/08/2016 05:24 AM, Krzysztof Kozlowski wrote:
> The samsung_clk_init() cannot return NULL. Either it returns allocated
> memory or it panics.
>
> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
> ---
> drivers/clk/samsung/clk-exynos5420.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
> index 92382cef9f90..770c0f007c6b 100644
> --- a/drivers/clk/samsung/clk-exynos5420.c
> +++ b/drivers/clk/samsung/clk-exynos5420.c
> @@ -1356,8 +1356,6 @@ static void __init exynos5x_clk_init(struct device_node *np,
> exynos5x_soc = soc;
>
> ctx = samsung_clk_init(np, reg_base, CLK_NR_CLKS);
> - if (!ctx)
> - panic("%s: unable to allocate context.\n", __func__);
>

Indeed, the check is superfluous. I see that most callers [0] currently
do the same, so probably makes sense to remove those too in this patch.

Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>

[0]:
drivers/clk/samsung/clk-exynos4.c
drivers/clk/samsung/clk-exynos5250.c
drivers/clk/samsung/clk-exynos5440.c
drivers/clk/samsung/clk-s3c2410.c
drivers/clk/samsung/clk-s3c2412.c
drivers/clk/samsung/clk-s3c2443.c
drivers/clk/samsung/clk-s3c64xx.c
drivers/clk/samsung/clk-s5pv210.c

Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America