Re: [PATCH 2/4] drm/dp_mst: Reformat drm_dp_check_act_status() a bit
On Mon, 2020-04-06 at 15:23 -0400, Sean Paul wrote:
> On Fri, Apr 3, 2020 at 4:08 PM Lyude Paul wrote:
> > Just add a bit more line wrapping, get rid of some extraneous
> > whitespace, remove an unneeded goto label, and move around some variable
> > declarations. No functional changes here.
> >
> > Signed-off-by: Lyude Paul
> > [this isn't a fix, but it's needed for the fix that comes after this]
> > Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper
> > (v0.6)")
> > Cc: Sean Paul
> > Cc: # v3.17+
> > ---
> > drivers/gpu/drm/drm_dp_mst_topology.c | 22 ++
> > 1 file changed, 10 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
> > b/drivers/gpu/drm/drm_dp_mst_topology.c
> > index 2b9ce965f044..7aaf184a2e5f 100644
> > --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> > @@ -4473,33 +4473,31 @@ static int drm_dp_dpcd_write_payload(struct
> > drm_dp_mst_topology_mgr *mgr,
> > */
> > int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr)
> > {
> > + int count = 0, ret;
> > u8 status;
> > - int ret;
> > - int count = 0;
> >
> > do {
> > - ret = drm_dp_dpcd_readb(mgr->aux,
> > DP_PAYLOAD_TABLE_UPDATE_STATUS, &status);
> > -
> > + ret = drm_dp_dpcd_readb(mgr->aux,
> > + DP_PAYLOAD_TABLE_UPDATE_STATUS,
> > + &status);
> > if (ret < 0) {
> > - DRM_DEBUG_KMS("failed to read payload table status
> > %d\n", ret);
> > - goto fail;
> > + DRM_DEBUG_KMS("failed to read payload table status
> > %d\n",
> > + ret);
> > + return ret;
> > }
> >
> > if (status & DP_PAYLOAD_ACT_HANDLED)
> > break;
> > count++;
> > udelay(100);
> > -
> > } while (count < 30);
> >
> > if (!(status & DP_PAYLOAD_ACT_HANDLED)) {
> > - DRM_DEBUG_KMS("failed to get ACT bit %d after %d
> > retries\n", status, count);
> > - ret = -EINVAL;
> > - goto fail;
> > + DRM_DEBUG_KMS("failed to get ACT bit %d after %d
> > retries\n",
>
> Should we print status in base16 here?
jfyi - I realized we don't actually need to do this, because we do this in the
next patch whoops. Just figured I'd point that out
>
> Otherwise:
>
> Reviewed-by: Sean Paul
>
> > + status, count);
> > + return -EINVAL;
> > }
> > return 0;
> > -fail:
> > - return ret;
> > }
> > EXPORT_SYMBOL(drm_dp_check_act_status);
> >
> > --
> > 2.25.1
> >
--
Cheers,
Lyude Paul (she/her)
Associate Software Engineer at Red Hat
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Re: [PATCH 2/4] drm/dp_mst: Reformat drm_dp_check_act_status() a bit
On Mon, 2020-04-06 at 15:23 -0400, Sean Paul wrote:
> On Fri, Apr 3, 2020 at 4:08 PM Lyude Paul wrote:
> > Just add a bit more line wrapping, get rid of some extraneous
> > whitespace, remove an unneeded goto label, and move around some variable
> > declarations. No functional changes here.
> >
> > Signed-off-by: Lyude Paul
> > [this isn't a fix, but it's needed for the fix that comes after this]
> > Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper
> > (v0.6)")
> > Cc: Sean Paul
> > Cc: # v3.17+
> > ---
> > drivers/gpu/drm/drm_dp_mst_topology.c | 22 ++
> > 1 file changed, 10 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
> > b/drivers/gpu/drm/drm_dp_mst_topology.c
> > index 2b9ce965f044..7aaf184a2e5f 100644
> > --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> > @@ -4473,33 +4473,31 @@ static int drm_dp_dpcd_write_payload(struct
> > drm_dp_mst_topology_mgr *mgr,
> > */
> > int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr)
> > {
> > + int count = 0, ret;
> > u8 status;
> > - int ret;
> > - int count = 0;
> >
> > do {
> > - ret = drm_dp_dpcd_readb(mgr->aux,
> > DP_PAYLOAD_TABLE_UPDATE_STATUS, &status);
> > -
> > + ret = drm_dp_dpcd_readb(mgr->aux,
> > + DP_PAYLOAD_TABLE_UPDATE_STATUS,
> > + &status);
> > if (ret < 0) {
> > - DRM_DEBUG_KMS("failed to read payload table status
> > %d\n", ret);
> > - goto fail;
> > + DRM_DEBUG_KMS("failed to read payload table status
> > %d\n",
> > + ret);
> > + return ret;
> > }
> >
> > if (status & DP_PAYLOAD_ACT_HANDLED)
> > break;
> > count++;
> > udelay(100);
> > -
> > } while (count < 30);
> >
> > if (!(status & DP_PAYLOAD_ACT_HANDLED)) {
> > - DRM_DEBUG_KMS("failed to get ACT bit %d after %d
> > retries\n", status, count);
> > - ret = -EINVAL;
> > - goto fail;
> > + DRM_DEBUG_KMS("failed to get ACT bit %d after %d
> > retries\n",
>
> Should we print status in base16 here?
>
> Otherwise:
>
> Reviewed-by: Sean Paul
Good point - I'll make sure to fix that before I push the series
>
> > + status, count);
> > + return -EINVAL;
> > }
> > return 0;
> > -fail:
> > - return ret;
> > }
> > EXPORT_SYMBOL(drm_dp_check_act_status);
> >
> > --
> > 2.25.1
> >
--
Cheers,
Lyude Paul (she/her)
Associate Software Engineer at Red Hat
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Re: [PATCH 2/4] drm/dp_mst: Reformat drm_dp_check_act_status() a bit
On Fri, Apr 3, 2020 at 4:08 PM Lyude Paul wrote:
>
> Just add a bit more line wrapping, get rid of some extraneous
> whitespace, remove an unneeded goto label, and move around some variable
> declarations. No functional changes here.
>
> Signed-off-by: Lyude Paul
> [this isn't a fix, but it's needed for the fix that comes after this]
> Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)")
> Cc: Sean Paul
> Cc: # v3.17+
> ---
> drivers/gpu/drm/drm_dp_mst_topology.c | 22 ++
> 1 file changed, 10 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
> b/drivers/gpu/drm/drm_dp_mst_topology.c
> index 2b9ce965f044..7aaf184a2e5f 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -4473,33 +4473,31 @@ static int drm_dp_dpcd_write_payload(struct
> drm_dp_mst_topology_mgr *mgr,
> */
> int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr)
> {
> + int count = 0, ret;
> u8 status;
> - int ret;
> - int count = 0;
>
> do {
> - ret = drm_dp_dpcd_readb(mgr->aux,
> DP_PAYLOAD_TABLE_UPDATE_STATUS, &status);
> -
> + ret = drm_dp_dpcd_readb(mgr->aux,
> + DP_PAYLOAD_TABLE_UPDATE_STATUS,
> + &status);
> if (ret < 0) {
> - DRM_DEBUG_KMS("failed to read payload table status
> %d\n", ret);
> - goto fail;
> + DRM_DEBUG_KMS("failed to read payload table status
> %d\n",
> + ret);
> + return ret;
> }
>
> if (status & DP_PAYLOAD_ACT_HANDLED)
> break;
> count++;
> udelay(100);
> -
> } while (count < 30);
>
> if (!(status & DP_PAYLOAD_ACT_HANDLED)) {
> - DRM_DEBUG_KMS("failed to get ACT bit %d after %d retries\n",
> status, count);
> - ret = -EINVAL;
> - goto fail;
> + DRM_DEBUG_KMS("failed to get ACT bit %d after %d retries\n",
Should we print status in base16 here?
Otherwise:
Reviewed-by: Sean Paul
> + status, count);
> + return -EINVAL;
> }
> return 0;
> -fail:
> - return ret;
> }
> EXPORT_SYMBOL(drm_dp_check_act_status);
>
> --
> 2.25.1
>
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[PATCH 2/4] drm/dp_mst: Reformat drm_dp_check_act_status() a bit
Just add a bit more line wrapping, get rid of some extraneous
whitespace, remove an unneeded goto label, and move around some variable
declarations. No functional changes here.
Signed-off-by: Lyude Paul
[this isn't a fix, but it's needed for the fix that comes after this]
Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)")
Cc: Sean Paul
Cc: # v3.17+
---
drivers/gpu/drm/drm_dp_mst_topology.c | 22 ++
1 file changed, 10 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 2b9ce965f044..7aaf184a2e5f 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -4473,33 +4473,31 @@ static int drm_dp_dpcd_write_payload(struct
drm_dp_mst_topology_mgr *mgr,
*/
int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr)
{
+ int count = 0, ret;
u8 status;
- int ret;
- int count = 0;
do {
- ret = drm_dp_dpcd_readb(mgr->aux,
DP_PAYLOAD_TABLE_UPDATE_STATUS, &status);
-
+ ret = drm_dp_dpcd_readb(mgr->aux,
+ DP_PAYLOAD_TABLE_UPDATE_STATUS,
+ &status);
if (ret < 0) {
- DRM_DEBUG_KMS("failed to read payload table status
%d\n", ret);
- goto fail;
+ DRM_DEBUG_KMS("failed to read payload table status
%d\n",
+ ret);
+ return ret;
}
if (status & DP_PAYLOAD_ACT_HANDLED)
break;
count++;
udelay(100);
-
} while (count < 30);
if (!(status & DP_PAYLOAD_ACT_HANDLED)) {
- DRM_DEBUG_KMS("failed to get ACT bit %d after %d retries\n",
status, count);
- ret = -EINVAL;
- goto fail;
+ DRM_DEBUG_KMS("failed to get ACT bit %d after %d retries\n",
+ status, count);
+ return -EINVAL;
}
return 0;
-fail:
- return ret;
}
EXPORT_SYMBOL(drm_dp_check_act_status);
--
2.25.1
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