2023-06-08 04:18:33

by Wang Jianzheng

[permalink] [raw]
Subject: [PATCH] drm/panel: s6d7aa0: remove the unneeded variable in s6d7aa0_lock

Remove unneeded variable and directly return 0.

Signed-off-by: Wang Jianzheng <[email protected]>
---
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
index 102e1fc7ee38..fec0d014fd0e 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
@@ -66,7 +66,6 @@ static void s6d7aa0_reset(struct s6d7aa0 *ctx)
static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
{
struct mipi_dsi_device *dsi = ctx->dsi;
- int ret = 0;

if (lock) {
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
@@ -80,7 +79,7 @@ static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
}

- return ret;
+ return 0;
}

static int s6d7aa0_on(struct s6d7aa0 *ctx)
--
2.39.0



2023-06-08 07:57:17

by Neil Armstrong

[permalink] [raw]
Subject: Re: [PATCH] drm/panel: s6d7aa0: remove the unneeded variable in s6d7aa0_lock

On 08/06/2023 05:34, Wang Jianzheng wrote:
> Remove unneeded variable and directly return 0.
>
> Signed-off-by: Wang Jianzheng <[email protected]>
> ---
> drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> index 102e1fc7ee38..fec0d014fd0e 100644
> --- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> @@ -66,7 +66,6 @@ static void s6d7aa0_reset(struct s6d7aa0 *ctx)
> static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
> {
> struct mipi_dsi_device *dsi = ctx->dsi;
> - int ret = 0;
>
> if (lock) {
> mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
> @@ -80,7 +79,7 @@ static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
> mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
> }
>
> - return ret;
> + return 0;
> }
>
> static int s6d7aa0_on(struct s6d7aa0 *ctx)

Acked-by: Neil Armstrong <[email protected]>

2023-06-08 09:46:39

by Andi Shyti

[permalink] [raw]
Subject: Re: [PATCH] drm/panel: s6d7aa0: remove the unneeded variable in s6d7aa0_lock

Hi Jianzheng,

On Thu, Jun 08, 2023 at 11:34:46AM +0800, Wang Jianzheng wrote:
> Remove unneeded variable and directly return 0.
>
> Signed-off-by: Wang Jianzheng <[email protected]>
> ---
> drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> index 102e1fc7ee38..fec0d014fd0e 100644
> --- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> @@ -66,7 +66,6 @@ static void s6d7aa0_reset(struct s6d7aa0 *ctx)
> static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)

actually this function can completely made void.

> {
> struct mipi_dsi_device *dsi = ctx->dsi;
> - int ret = 0;
>
> if (lock) {
> mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
> @@ -80,7 +79,7 @@ static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
> mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
> }
>
> - return ret;
> + return 0;

Anyway the patch is fine:

Reviewed-by: Andi Shyti <[email protected]>

Andi

> }
>
> static int s6d7aa0_on(struct s6d7aa0 *ctx)
> --
> 2.39.0

2023-06-08 10:17:16

by Artur Weber

[permalink] [raw]
Subject: Re: [PATCH] drm/panel: s6d7aa0: remove the unneeded variable in s6d7aa0_lock

On 08/06/2023 11:36, Andi Shyti wrote:
> Hi Jianzheng,
>
> On Thu, Jun 08, 2023 at 11:34:46AM +0800, Wang Jianzheng wrote:
>> Remove unneeded variable and directly return 0.
>>
>> Signed-off-by: Wang Jianzheng <[email protected]>
>> ---
>> drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
>> index 102e1fc7ee38..fec0d014fd0e 100644
>> --- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
>> +++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
>> @@ -66,7 +66,6 @@ static void s6d7aa0_reset(struct s6d7aa0 *ctx)
>> static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
>
> actually this function can completely made void.

It can't be made void, as the mipi_dsi_dcs_write_seq() macro calls
return with an int[1].

Best regards
Artur

[1] https://github.com/torvalds/linux/blob/v6.4-rc5/include/drm/drm_mipi_dsi.h#L319-L337


2023-06-08 10:37:56

by Artur Weber

[permalink] [raw]
Subject: Re: [PATCH] drm/panel: s6d7aa0: remove the unneeded variable in s6d7aa0_lock

On 08/06/2023 05:34, Wang Jianzheng wrote:
> Remove unneeded variable and directly return 0.
>
> Signed-off-by: Wang Jianzheng <[email protected]>
> ---
> drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> index 102e1fc7ee38..fec0d014fd0e 100644
> --- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
> @@ -66,7 +66,6 @@ static void s6d7aa0_reset(struct s6d7aa0 *ctx)
> static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
> {
> struct mipi_dsi_device *dsi = ctx->dsi;
> - int ret = 0;
>
> if (lock) {
> mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
> @@ -80,7 +79,7 @@ static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
> mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
> }
>
> - return ret;
> + return 0;
> }
>
> static int s6d7aa0_on(struct s6d7aa0 *ctx)

Reviewed-by: Artur Weber <[email protected]>

Best regards
Artur

2023-06-08 12:56:53

by Neil Armstrong

[permalink] [raw]
Subject: Re: [PATCH] drm/panel: s6d7aa0: remove the unneeded variable in s6d7aa0_lock

Hi,

On Thu, 08 Jun 2023 11:34:46 +0800, Wang Jianzheng wrote:
> Remove unneeded variable and directly return 0.
>
>

Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)

[1/1] drm/panel: s6d7aa0: remove the unneeded variable in s6d7aa0_lock
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=c5dacfe2e6c1251276e29b4cdac771f504593523

--
Neil