V4L/DVB (6026): Avoid powering up the camera on resume

Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
index c08f650df423..88090107cd44 100644
--- a/drivers/media/video/cafe_ccic.c
+++ b/drivers/media/video/cafe_ccic.c
@@ -2233,12 +2233,21 @@ static int cafe_pci_resume(struct pci_dev *pdev)
         if (ret)
                 return ret;
         ret = pci_enable_device(pdev);
+
         if (ret) {
                 cam_warn(cam, "Unable to re-enable device on resume!\n");
                 return ret;
         }
         cafe_ctlr_init(cam);
-        cafe_ctlr_power_up(cam);
+        cafe_ctlr_power_down(cam);
+
+        mutex_lock(&cam->s_mutex);
+        if (cam->users > 0) {
+                cafe_ctlr_power_up(cam);
+                __cafe_cam_reset(cam);
+        }
+        mutex_unlock(&cam->s_mutex);
+
         set_bit(CF_CONFIG_NEEDED, &cam->flags);
         if (cam->state == S_SPECREAD)
                 cam->state = S_IDLE;  /* Don't bother restarting */