V4L/DVB (4241): Fix faulty encoder error recovery in pvrusb2

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

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index f461830c64c9..1829029cc9b9 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -1098,12 +1098,13 @@ void pvr2_hdw_subsys_bit_chg_no_lock(struct pvr2_hdw *hdw,
         if (!hdw->flag_ok) return;
 
         msk &= PVR2_SUBSYS_ALL;
+        nmsk = (hdw->subsys_enabled_mask & ~msk) | (val & msk);
+        nmsk &= PVR2_SUBSYS_ALL;
 
         for (;;) {
                 tryCount++;
-                vmsk = hdw->subsys_enabled_mask & PVR2_SUBSYS_ALL;
-                nmsk = (vmsk & ~msk) | (val & msk);
-                if (!(nmsk ^ vmsk)) break;
+                if (!((nmsk ^ hdw->subsys_enabled_mask) &
+                      PVR2_SUBSYS_ALL)) break;
                 if (tryCount > 4) {
                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
                                    "Too many retries when configuring device;"