From: Sean Young <sean@mess.org>
Date: Fri, 7 Jul 2017 21:49:18 +0000 (-0300)
Subject: media: lirc: LIRC_GET_REC_RESOLUTION should return microseconds
X-Git-Tag: v4.9.42~63
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c14e327bee7018659e0b64db265e19f62cc2bd72;p=platform%2Fkernel%2Flinux-amlogic.git

media: lirc: LIRC_GET_REC_RESOLUTION should return microseconds

commit 9f5039ba440e499d85c29b1ddbc3cbc9dc90e44b upstream.

Since commit e8f4818895b3 ("[media] lirc: advertise
LIRC_CAN_GET_REC_RESOLUTION and improve") lircd uses the ioctl
LIRC_GET_REC_RESOLUTION to determine the shortest pulse or space that
the hardware can detect. This breaks decoding in lirc because lircd
expects the answer in microseconds, but nanoseconds is returned.

Reported-by: Derek <user.vdr@gmail.com>
Tested-by: Derek <user.vdr@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
index c3277308a70b..b49f80cb49c9 100644
--- a/drivers/media/rc/ir-lirc-codec.c
+++ b/drivers/media/rc/ir-lirc-codec.c
@@ -254,7 +254,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
 		return 0;
 
 	case LIRC_GET_REC_RESOLUTION:
-		val = dev->rx_resolution;
+		val = dev->rx_resolution / 1000;
 		break;
 
 	case LIRC_SET_WIDEBAND_RECEIVER: