The ast driver protects the commit tail against concurrent reads of the display modes by acquiring a lock. The comment is misleading as the lock is not released in atomic_flush, but at the end of the commit-tail helper. Rewrite the comment.
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Fixes: 1fe182154984 ("drm/ast: Acquire I/O-register lock in atomic_commit_tail function") Cc: Thomas Zimmermann tzimmermann@suse.de Cc: Jocelyn Falempe jfalempe@redhat.com Cc: Dave Airlie airlied@redhat.com Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org # v6.2+ --- drivers/gpu/drm/ast/ast_mode.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 4cac5c7f4547..20fbea11b710 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -939,9 +939,9 @@ static void ast_mode_config_helper_atomic_commit_tail(struct drm_atomic_state *s
/* * Concurrent operations could possibly trigger a call to - * drm_connector_helper_funcs.get_modes by trying to read the - * display modes. Protect access to I/O registers by acquiring - * the I/O-register lock. Released in atomic_flush(). + * drm_connector_helper_funcs.get_modes by reading the display + * modes. Protect access to registers by acquiring the modeset + * lock. */ mutex_lock(&ast->modeset_lock); drm_atomic_helper_commit_tail(state);