[PATCH 16/16] carl9170: cmd: downgrade transient register I/O errors to wiphy_dbg

[Masi Osmani <mas-i@hotmail.de>]

Register read/write failures during deauth/teardown transitions are
harmless — mac80211 tries to read survey stats or write slot_time
while the firmware is in a transitional state.  The command times
out with -EIO but the adapter recovers and re-authenticates normally.

Downgrade both "writing reg ... failed" and "reading regs failed"
from wiphy_err to wiphy_dbg to reduce dmesg noise.  The errors are
still visible with dynamic debug enabled for investigation.

Signed-off-by: Masi Osmani <mas-i@hotmail.de>
---
 drivers/net/wireless/ath/carl9170/cmd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/carl9170/cmd.c b/drivers/net/wireless/ath/carl9170/cmd.c
--- a/drivers/net/wireless/ath/carl9170/cmd.c
+++ b/drivers/net/wireless/ath/carl9170/cmd.c
@@ -52,7 +52,7 @@
 				(u8 *) buf, 0, NULL);
 	if (err) {
 		if (net_ratelimit()) {
-			wiphy_err(ar->hw->wiphy, "writing reg %#x "
+			wiphy_dbg(ar->hw->wiphy, "writing reg %#x "
 				"(val %#x) failed (%d)\n", reg, val, err);
 		}
 	}
@@ -78,7 +78,7 @@
 				4 * nregs, (u8 *)res);
 	if (err) {
 		if (net_ratelimit()) {
-			wiphy_err(ar->hw->wiphy, "reading regs failed (%d)\n",
+			wiphy_dbg(ar->hw->wiphy, "reading regs failed (%d)\n",
 				  err);
 		}
 		return err;