releases/4.4.13/ath10k-fix-debugfs-pktlog_filter-write.patch

   1 From 9ddc486aa09a3413a6c492fcf160ce61bfccb7b1 Mon Sep 17 00:00:00 2001
   2 From: Anilkumar Kolli <akolli@qti.qualcomm.com>
   3 Date: Fri, 11 Mar 2016 11:46:39 +0530
   4 Subject: ath10k: fix debugfs pktlog_filter write
   5
   6 From: Anilkumar Kolli <akolli@qti.qualcomm.com>
   7
   8 commit 9ddc486aa09a3413a6c492fcf160ce61bfccb7b1 upstream.
   9
  10 It is observed that, we are disabling the packet log if we write same
  11 value to the pktlog_filter for the second time. Always enable pktlogs
  12 on non zero filter.
  13
  14 Fixes: 90174455ae05 ("ath10k: add support to configure pktlog filter")
  15 Signed-off-by: Anilkumar Kolli <akolli@qti.qualcomm.com>
  16 Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  18
  19 ---
  20  drivers/net/wireless/ath/ath10k/debug.c |    7 ++++++-
  21  1 file changed, 6 insertions(+), 1 deletion(-)
  22
  23 --- a/drivers/net/wireless/ath/ath10k/debug.c
  24 +++ b/drivers/net/wireless/ath/ath10k/debug.c
  25 @@ -1986,7 +1986,12 @@ static ssize_t ath10k_write_pktlog_filte
  26                 goto out;
  27         }
  28
  29 -       if (filter && (filter != ar->debug.pktlog_filter)) {
  30 +       if (filter == ar->debug.pktlog_filter) {
  31 +               ret = count;
  32 +               goto out;
  33 +       }
  34 +
  35 +       if (filter) {
  36                 ret = ath10k_wmi_pdev_pktlog_enable(ar, filter);
  37                 if (ret) {
  38                         ath10k_warn(ar, "failed to enable pktlog filter %x: %d\n",