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Subject: media: lirc: drop trailing space from scancode transmit
Author: Sean Young <s...@mess.org>
Date: Fri Oct 6 22:31:52 2023 +0100
When transmitting, infrared drivers expect an odd number of samples; iow
without a trailing space. No problems have been observed so far, so
this is just belt and braces.
Fixes: 9b6192589be7 ("media: lirc: implement scancode sending")
Cc: sta...@vger.kernel.org
Signed-off-by: Sean Young <s...@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/rc/lirc_dev.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index 043d23aaa3cb..a537734832c5 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -276,7 +276,11 @@ static ssize_t lirc_transmit(struct file *file, const char
__user *buf,
if (ret < 0)
goto out_kfree_raw;
- count = ret;
+ /* drop trailing space */
+ if (!(ret % 2))
+ count = ret - 1;
+ else
+ count = ret;
txbuf = kmalloc_array(count, sizeof(unsigned int), GFP_KERNEL);
if (!txbuf) {
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