[PATCH 2/2] media/rc/imon.c: avoid flooding syslog with "unknown keypress" when keypad is pressed

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My 15c2:0036 device floods syslog when a keypad key is pressed:

Feb 18 19:00:57 homeserver kernel: imon 5-1:1.0: imon_incoming_packet: unknown keypress, code 0x100fff2
Feb 18 19:00:57 homeserver kernel: imon 5-1:1.0: imon_incoming_packet: unknown keypress, code 0x100fef2
Feb 18 19:00:57 homeserver kernel: imon 5-1:1.0: imon_incoming_packet: unknown keypress, code 0x100fff2
Feb 18 19:00:57 homeserver kernel: imon 5-1:1.0: imon_incoming_packet: unknown keypress, code 0x100fff2
Feb 18 19:00:57 homeserver kernel: imon 5-1:1.0: imon_incoming_packet: unknown keypress, code 0x100fff2

This patch lowers severity of this message when key appears to be coming from keypad.

Signed-off-by: Kevin Baradon <kevin.baradon@xxxxxxxxx>
---
 drivers/media/rc/imon.c |   15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index a3e66a0..bca03d4 100644
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -1499,7 +1499,7 @@ static void imon_incoming_packet(struct imon_context *ictx,
 	int i;
 	u64 scancode;
 	int press_type = 0;
-	int msec;
+	int msec, is_pad_key = 0;
 	struct timeval t;
 	static struct timeval prev_time = { 0, 0 };
 	u8 ktype;
@@ -1562,6 +1562,7 @@ static void imon_incoming_packet(struct imon_context *ictx,
 	    ((len == 8) && (buf[0] & 0x40) &&
 	     !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) {
 		len = 8;
+		is_pad_key = 1;
 		imon_pad_to_keys(ictx, buf);
 	}
 
@@ -1625,8 +1626,16 @@ static void imon_incoming_packet(struct imon_context *ictx,
 
 unknown_key:
 	spin_unlock_irqrestore(&ictx->kc_lock, flags);
-	dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__,
-		 (long long)scancode);
+	/*
+	 * On some devices syslog is flooded with unknown keypresses when keypad
+	 * is pressed. Lower message severity in that case.
+	 */
+	if (!is_pad_key)
+		dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__,
+			 (long long)scancode);
+	else
+		dev_dbg(dev, "%s: unknown keypad keypress, code 0x%llx\n",
+			__func__, (long long)scancode);
 	return;
 
 not_input_data:
-- 
1.7.10.4

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