From 9358e7234997e2ab1e5368ee6e69b897d36f7381 Mon Sep 17 00:00:00 2001
From: Jonathan McDowell <noodles@earth.li>
Date: Sat, 14 May 2016 14:01:26 -0300
Subject: [PATCH] [media] Fix RC5 decoding with Fintek CIR chipset
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Fix RC5 decoding with Fintek CIR chipset
Commit 41438443f90589cb3d03af43e667e12a9237754a tightened up the RC5
decoding by adding a check for trailing silence to ensure a valid RC5
command had been received. Unfortunately the trailer length checked was
10 units and the Fintek CIR device does not want to provide details of a
space longer than 6350us. This meant that RC5 remotes working on a
Fintek setup on 3.16 failed on 3.17 and later. Fix this by shortening
the trailer check to 6 units (allowing for a previous space in the
received remote command).
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=117221
Signed-off-by: Jonathan McDowell <noodles@earth.li>
Cc: stable@vger.kernel.org
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
drivers/media/rc/ir-rc5-decoder.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/rc/ir-rc5-decoder.c b/drivers/media/rc/ir-rc5-decoder.c
index 6ffe776abf6bd..a0fd4e6b2155b 100644
--- a/drivers/media/rc/ir-rc5-decoder.c
+++ b/drivers/media/rc/ir-rc5-decoder.c
@@ -29,7 +29,7 @@
#define RC5_BIT_START (1 * RC5_UNIT)
#define RC5_BIT_END (1 * RC5_UNIT)
#define RC5X_SPACE (4 * RC5_UNIT)
-#define RC5_TRAILER (10 * RC5_UNIT) /* In reality, approx 100 */
+#define RC5_TRAILER (6 * RC5_UNIT) /* In reality, approx 100 */
enum rc5_state {
STATE_INACTIVE,
--
2.39.5