MFC r259684:

drm/ttm, drm/radeon: Replace EINTR/ERESTART by ERESTARTSYS...

... for msleep/cv_*wait() return values, where wait_event*() is used
on Linux. ERESTARTSYS is the return code expected by callers when the
operation was interrupted.

For instance, this is the case of radeon_cs_ioctl() (radeon_cs.c): if
an error occurs, and the code isn't ERESTARTSYS (eg. EINTR), it logs an
error.

Note that ERESTARTSYS is defined as ERESTART, but this keeps callers'
code close to Linux.

Submitted by:	avg@ (previous version)

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/dev/drm2/radeon/radeon_sa.c b/sys/dev/drm2/radeon/radeon_sa.c
index e750812..25695a4 100644
--- a/sys/dev/drm2/radeon/radeon_sa.c
+++ b/sys/dev/drm2/radeon/radeon_sa.c
@@ -363,6 +363,8 @@ int radeon_sa_bo_new(struct radeon_device *rdev,
 			while (!radeon_sa_event(sa_manager, size, align)) {
 				r = -cv_wait_sig(&sa_manager->wq,
 				    &sa_manager->wq_lock);
+				if (r == -EINTR)
+					r = -ERESTARTSYS;
 				if (r != 0)
 					break;
 			}