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 de85f1d7ce434058390ffeeda813831a511e962a..c01b655571a28f664d3f3451c5d8ba04a2073e5c 100644 (file)
--- a/drivers/media/rc/ir-lirc-codec.c
+++ b/drivers/media/rc/ir-lirc-codec.c
@@ -266,7 +266,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
                if (!dev->rx_resolution)
                        return -ENOTTY;
 
-               val = dev->rx_resolution;
+               val = dev->rx_resolution / 1000;
                break;
 
        case LIRC_SET_WIDEBAND_RECEIVER: