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drm: fix fallouts from slow-work -> wq conversion 

Commit 991ea75c (drm: use workqueue instead of slow-work), which made
drm to use wq instead of slow-work, didn't account for the return
value difference between delayed_slow_work_enqueue() and
queue_delayed_work().  The former returns 0 on success and -errno on
failures while the latter never fails and only uses the return value
to indicate whether the work was already pending or not.

This misconversion triggered spurious error messages.  Remove the now
unnecessary return value check and error message.

Markus: caught another incorrect conversion in drm_kms_helper_poll_enable()

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
This commit is contained in:
Tejun Heo 2010-08-09 12:01:27 +02:00
parent f6500947a9
commit 9a919c46df
1 changed files with 4 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/drm_crtc_helper.c
View File

@ -839,7 +839,6 @@ static void output_poll_execute(struct work_struct *work)
struct drm_connector *connector;
enum drm_connector_status old_status, status;
bool repoll = false, changed = false;
int ret;
mutex_lock(&dev->mode_config.mutex);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
@ -874,11 +873,8 @@ static void output_poll_execute(struct work_struct *work)
dev->mode_config.funcs->output_poll_changed(dev);
}
if (repoll) {
ret = queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD);
if (ret)
DRM_ERROR("delayed enqueue failed %d\n", ret);
}
if (repoll)
queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD);
}
void drm_kms_helper_poll_disable(struct drm_device *dev)
@ -893,18 +889,14 @@ void drm_kms_helper_poll_enable(struct drm_device *dev)
{
bool poll = false;
struct drm_connector *connector;
int ret;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (connector->polled)
poll = true;
}
if (poll) {
ret = queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD);
if (ret)
DRM_ERROR("delayed enqueue failed %d\n", ret);
}
if (poll)
queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD);
}
EXPORT_SYMBOL(drm_kms_helper_poll_enable);