| Message ID | 20210818171318.1848272-2-robert.foss@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2,1/2] drm/bridge: anx7625: Propagate errors from sp_tx_rst_aux() | expand |
Hi Robert, On Wed, Aug 18, 2021 at 07:13:18PM +0200, Robert Foss wrote: > During the sp_tx_edid_read() call the return value of sp_tx_edid_read() > is ignored, which could cause potential errors to go unhandled. > > All errors which are returned by sp_tx_edid_read() are handled in > anx7625_get_edid(). > > Signed-off-by: Robert Foss <robert.foss@linaro.org> > --- > drivers/gpu/drm/bridge/analogix/anx7625.c | 14 ++++++++++---- > 1 file changed, 10 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c > index ea414cd349b5c..abc8db77bfd36 100644 > --- a/drivers/gpu/drm/bridge/analogix/anx7625.c > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c > @@ -845,8 +845,11 @@ static int sp_tx_edid_read(struct anx7625_data *ctx, > if (g_edid_break == 1) > break; > > - segments_edid_read(ctx, count / 2, > - pblock_buf, offset); > + ret = segments_edid_read(ctx, count / 2, > + pblock_buf, offset); > + if (ret < 0) > + return ret; > + This could be just "if (ret)". Same goes for the next case. With or without this simplification: Reviewed-by: Sam Ravnborg <sam@ravnborg.org> I assume you will apply the patches. Sam > memcpy(&pedid_blocks_buf[edid_pos], > pblock_buf, > MAX_DPCD_BUFFER_SIZE); > @@ -863,8 +866,11 @@ static int sp_tx_edid_read(struct anx7625_data *ctx, > if (g_edid_break == 1) > break; > > - segments_edid_read(ctx, count / 2, > - pblock_buf, offset); > + ret = segments_edid_read(ctx, count / 2, > + pblock_buf, offset); > + if (ret < 0) > + return ret; > + > memcpy(&pedid_blocks_buf[edid_pos], > pblock_buf, > MAX_DPCD_BUFFER_SIZE); > -- > 2.30.2
Thanks Sam! On Wed, 18 Aug 2021 at 19:40, Sam Ravnborg <sam@ravnborg.org> wrote: > > Hi Robert, > > On Wed, Aug 18, 2021 at 07:13:18PM +0200, Robert Foss wrote: > > During the sp_tx_edid_read() call the return value of sp_tx_edid_read() > > is ignored, which could cause potential errors to go unhandled. > > > > All errors which are returned by sp_tx_edid_read() are handled in > > anx7625_get_edid(). > > > > Signed-off-by: Robert Foss <robert.foss@linaro.org> > > --- > > drivers/gpu/drm/bridge/analogix/anx7625.c | 14 ++++++++++---- > > 1 file changed, 10 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c > > index ea414cd349b5c..abc8db77bfd36 100644 > > --- a/drivers/gpu/drm/bridge/analogix/anx7625.c > > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c > > @@ -845,8 +845,11 @@ static int sp_tx_edid_read(struct anx7625_data *ctx, > > if (g_edid_break == 1) > > break; > > > > - segments_edid_read(ctx, count / 2, > > - pblock_buf, offset); > > + ret = segments_edid_read(ctx, count / 2, > > + pblock_buf, offset); > > + if (ret < 0) > > + return ret; > > + > > This could be just "if (ret)". > Same goes for the next case. > > With or without this simplification: > Reviewed-by: Sam Ravnborg <sam@ravnborg.org> > > I assume you will apply the patches. Applied to drm-misc-next
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index ea414cd349b5c..abc8db77bfd36 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -845,8 +845,11 @@ static int sp_tx_edid_read(struct anx7625_data *ctx, if (g_edid_break == 1) break; - segments_edid_read(ctx, count / 2, - pblock_buf, offset); + ret = segments_edid_read(ctx, count / 2, + pblock_buf, offset); + if (ret < 0) + return ret; + memcpy(&pedid_blocks_buf[edid_pos], pblock_buf, MAX_DPCD_BUFFER_SIZE); @@ -863,8 +866,11 @@ static int sp_tx_edid_read(struct anx7625_data *ctx, if (g_edid_break == 1) break; - segments_edid_read(ctx, count / 2, - pblock_buf, offset); + ret = segments_edid_read(ctx, count / 2, + pblock_buf, offset); + if (ret < 0) + return ret; + memcpy(&pedid_blocks_buf[edid_pos], pblock_buf, MAX_DPCD_BUFFER_SIZE);
During the sp_tx_edid_read() call the return value of sp_tx_edid_read() is ignored, which could cause potential errors to go unhandled. All errors which are returned by sp_tx_edid_read() are handled in anx7625_get_edid(). Signed-off-by: Robert Foss <robert.foss@linaro.org> --- drivers/gpu/drm/bridge/analogix/anx7625.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-)