* [patch] drm/atomic: fix an error code in mode_fixup()
@ 2017-02-07 23:46 ` Dan Carpenter
0 siblings, 0 replies; 4+ messages in thread
From: Dan Carpenter @ 2017-02-07 23:46 UTC (permalink / raw)
To: Daniel Vetter, Thierry Reding; +Cc: kernel-janitors, dri-devel
Having "ret" be a bool type works for everything except
ret = funcs->atomic_check(). The other functions all return zero on
error but ->atomic_check() returns negative error codes. We want to
propagate the error code but instead we return 1.
I found this bug with static analysis and I don't know if it affects
run time.
Fixes: 4cd4df8080a3 ("drm/atomic: Add ->atomic_check() to encoder helpers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 9a08445a7a7a..01d936b7be43 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -369,7 +369,7 @@ mode_fixup(struct drm_atomic_state *state)
struct drm_connector *connector;
struct drm_connector_state *conn_state;
int i;
- bool ret;
+ int ret;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (!crtc_state->mode_changed &&
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [patch] drm/atomic: fix an error code in mode_fixup()
@ 2017-02-07 23:46 ` Dan Carpenter
0 siblings, 0 replies; 4+ messages in thread
From: Dan Carpenter @ 2017-02-07 23:46 UTC (permalink / raw)
To: Daniel Vetter, Thierry Reding; +Cc: kernel-janitors, dri-devel
Having "ret" be a bool type works for everything except
ret = funcs->atomic_check(). The other functions all return zero on
error but ->atomic_check() returns negative error codes. We want to
propagate the error code but instead we return 1.
I found this bug with static analysis and I don't know if it affects
run time.
Fixes: 4cd4df8080a3 ("drm/atomic: Add ->atomic_check() to encoder helpers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 9a08445a7a7a..01d936b7be43 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -369,7 +369,7 @@ mode_fixup(struct drm_atomic_state *state)
struct drm_connector *connector;
struct drm_connector_state *conn_state;
int i;
- bool ret;
+ int ret;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (!crtc_state->mode_changed &&
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dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [patch] drm/atomic: fix an error code in mode_fixup()
2017-02-07 23:46 ` Dan Carpenter
@ 2017-02-08 8:49 ` Daniel Vetter
-1 siblings, 0 replies; 4+ messages in thread
From: Daniel Vetter @ 2017-02-08 8:49 UTC (permalink / raw)
To: Dan Carpenter; +Cc: Daniel Vetter, Thierry Reding, kernel-janitors, dri-devel
On Wed, Feb 08, 2017 at 02:46:01AM +0300, Dan Carpenter wrote:
> Having "ret" be a bool type works for everything except
> ret = funcs->atomic_check(). The other functions all return zero on
> error but ->atomic_check() returns negative error codes. We want to
> propagate the error code but instead we return 1.
>
> I found this bug with static analysis and I don't know if it affects
> run time.
>
> Fixes: 4cd4df8080a3 ("drm/atomic: Add ->atomic_check() to encoder helpers")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Applied to drm-misc for 4.11, thanks.
-Daniel
>
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 9a08445a7a7a..01d936b7be43 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -369,7 +369,7 @@ mode_fixup(struct drm_atomic_state *state)
> struct drm_connector *connector;
> struct drm_connector_state *conn_state;
> int i;
> - bool ret;
> + int ret;
>
> for_each_crtc_in_state(state, crtc, crtc_state, i) {
> if (!crtc_state->mode_changed &&
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [patch] drm/atomic: fix an error code in mode_fixup()
@ 2017-02-08 8:49 ` Daniel Vetter
0 siblings, 0 replies; 4+ messages in thread
From: Daniel Vetter @ 2017-02-08 8:49 UTC (permalink / raw)
To: Dan Carpenter; +Cc: Daniel Vetter, Thierry Reding, kernel-janitors, dri-devel
On Wed, Feb 08, 2017 at 02:46:01AM +0300, Dan Carpenter wrote:
> Having "ret" be a bool type works for everything except
> ret = funcs->atomic_check(). The other functions all return zero on
> error but ->atomic_check() returns negative error codes. We want to
> propagate the error code but instead we return 1.
>
> I found this bug with static analysis and I don't know if it affects
> run time.
>
> Fixes: 4cd4df8080a3 ("drm/atomic: Add ->atomic_check() to encoder helpers")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Applied to drm-misc for 4.11, thanks.
-Daniel
>
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 9a08445a7a7a..01d936b7be43 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -369,7 +369,7 @@ mode_fixup(struct drm_atomic_state *state)
> struct drm_connector *connector;
> struct drm_connector_state *conn_state;
> int i;
> - bool ret;
> + int ret;
>
> for_each_crtc_in_state(state, crtc, crtc_state, i) {
> if (!crtc_state->mode_changed &&
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-02-08 8:49 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2017-02-07 23:46 [patch] drm/atomic: fix an error code in mode_fixup() Dan Carpenter
2017-02-07 23:46 ` Dan Carpenter
2017-02-08 8:49 ` Daniel Vetter
2017-02-08 8:49 ` Daniel Vetter
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