Attempt to fix the issue reported by Alan Grimes with DRM_RADEON_TEXTURE

erroring out when it shouldn't.  The errno could be changed by usleep() between
the ioctl call and the loop check, if a signal was received.  This could cause
an EAGAIN return from the DRM_RADEON_TEXTURE ioctl to not loop again.
Instead of checking errno, check thevalue of ret itself, since it is a saved
(and sign-flipped) copy of errno from the ioctl call.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/radeon/radeon_texmem.c b/src/mesa/drivers/dri/radeon/radeon_texmem.c
index d492e190c1..3943afcde0 100644
--- a/src/mesa/drivers/dri/radeon/radeon_texmem.c
+++ b/src/mesa/drivers/dri/radeon/radeon_texmem.c
@@ -304,7 +304,7 @@ static void uploadSubImage( radeonContextPtr rmesa, radeonTexObjPtr t,
    do {
       ret = drmCommandWriteRead( rmesa->dri.fd, DRM_RADEON_TEXTURE,
                                  &tex, sizeof(drm_radeon_texture_t) );
-   } while ( ret && errno == EAGAIN );
+   } while ( ret == -EAGAIN );
 
    UNLOCK_HARDWARE( rmesa );