Re: [PATCH] drm/omap: dsi: fix unreachable code in dsi_vc_send_short()

2021-01-26 Thread Sebastian Reichel
Hi,

On Tue, Jan 26, 2021 at 05:55:11AM -0800, menglong8.d...@gmail.com wrote:
> From: Menglong Dong 
> 
> The 'r' in dsi_vc_send_short() is of type 'unsigned int', so the
> 'r < 0' can't be true.
> 
> Fix this by introducing a 'err' insteaded.
> 
> Fixes: 1ed6253856cb
> ("drm/omap: dsi: switch dsi_vc_send_long/short to mipi_dsi_msg")

Documentation/process/submitting-patches.rst:

If your patch fixes a bug in a specific commit, e.g. you found an
issue using ``git bisect``, please use the 'Fixes:' tag with the
first 12 characters of the SHA-1 ID, and the one line summary. Do
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Otherwise:

Reviewed-by: Sebastian Reichel 

-- Sebastian

> Signed-off-by: Menglong Dong 
> ---
>  drivers/gpu/drm/omapdrm/dss/dsi.c | 7 ---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c 
> b/drivers/gpu/drm/omapdrm/dss/dsi.c
> index 8e11612f5fe1..febcc87ddfe1 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dsi.c
> +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
> @@ -2149,11 +2149,12 @@ static int dsi_vc_send_short(struct dsi_data *dsi, 
> int vc,
>const struct mipi_dsi_msg *msg)
>  {
>   struct mipi_dsi_packet pkt;
> + int err;
>   u32 r;
>  
> - r = mipi_dsi_create_packet(, msg);
> - if (r < 0)
> - return r;
> + err = mipi_dsi_create_packet(, msg);
> + if (err)
> + return err;
>  
>   WARN_ON(!dsi_bus_is_locked(dsi));
>  
> -- 
> 2.25.1
> 


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[PATCH] drm/omap: dsi: fix unreachable code in dsi_vc_send_short()

2021-01-26 Thread menglong8 . dong
From: Menglong Dong 

The 'r' in dsi_vc_send_short() is of type 'unsigned int', so the
'r < 0' can't be true.

Fix this by introducing a 'err' insteaded.

Fixes: 1ed6253856cb
("drm/omap: dsi: switch dsi_vc_send_long/short to mipi_dsi_msg")

Signed-off-by: Menglong Dong 
---
 drivers/gpu/drm/omapdrm/dss/dsi.c | 7 ---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c 
b/drivers/gpu/drm/omapdrm/dss/dsi.c
index 8e11612f5fe1..febcc87ddfe1 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -2149,11 +2149,12 @@ static int dsi_vc_send_short(struct dsi_data *dsi, int 
vc,
 const struct mipi_dsi_msg *msg)
 {
struct mipi_dsi_packet pkt;
+   int err;
u32 r;
 
-   r = mipi_dsi_create_packet(, msg);
-   if (r < 0)
-   return r;
+   err = mipi_dsi_create_packet(, msg);
+   if (err)
+   return err;
 
WARN_ON(!dsi_bus_is_locked(dsi));
 
-- 
2.25.1