V4L/DVB (6357): pvrusb2: Improve encoder chip health tracking

This is a minor change to help with tracking the viability of the
encoder chip within the PVR USB2 device.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-encoder.c b/drivers/media/video/pvrusb2/pvrusb2-encoder.c
index 20b614436d2c..205087a3e136 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-encoder.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-encoder.c
@@ -209,6 +209,11 @@ static int pvr2_encoder_cmd(void *ctxt,
 
         LOCK_TAKE(hdw->ctl_lock); do {
 
+                if (!hdw->flag_encoder_ok) {
+                        ret = -EIO;
+                        break;
+                }
+
                 retry_flag = 0;
                 try_count++;
                 ret = 0;
@@ -273,6 +278,7 @@ static int pvr2_encoder_cmd(void *ctxt,
                         ret = -EBUSY;
                 }
                 if (ret) {
+                        hdw->flag_encoder_ok = 0;
                         pvr2_trace(
                                 PVR2_TRACE_ERROR_LEGS,
                                 "Giving up on command."