drm: sti: remove useless call to dev->struct_mutex

[cascardo/linux.git] / drivers / gpu / drm / sti / sti_mixer.c

diff --git a/drivers/gpu/drm/sti/sti_mixer.c b/drivers/gpu/drm/sti/sti_mixer.c
index e7425c3..6f86f2b 100644 (file)
--- a/drivers/gpu/drm/sti/sti_mixer.c
+++ b/drivers/gpu/drm/sti/sti_mixer.c
@@ -5,6 +5,7 @@
  *          for STMicroelectronics.
  * License terms:  GNU General Public License (GPL), version 2
  */
+#include <linux/seq_file.h>
 
 #include "sti_compositor.h"
 #include "sti_mixer.h"
@@ -150,12 +151,6 @@ static int mixer_dbg_show(struct seq_file *s, void *arg)
 {
        struct drm_info_node *node = s->private;
        struct sti_mixer *mixer = (struct sti_mixer *)node->info_ent->data;
-       struct drm_device *dev = node->minor->dev;
-       int ret;
-
-       ret = mutex_lock_interruptible(&dev->struct_mutex);
-       if (ret)
-               return ret;
 
        seq_printf(s, "%s: (vaddr = 0x%p)",
                   sti_mixer_to_str(mixer), mixer->regs);
@@ -175,7 +170,6 @@ static int mixer_dbg_show(struct seq_file *s, void *arg)
        mixer_dbg_mxn(s, mixer->regs + GAM_MIXER_MX0);
        seq_puts(s, "\n");
 
-       mutex_unlock(&dev->struct_mutex);
        return 0;
 }