4.19-stable review patch. If anyone has any objections, please let me know.
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From: Sean Young sean@mess.org
commit c8a489f820179fb12251e262b50303c29de991ac upstream.
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: stable@vger.kernel.org Signed-off-by: Sean Young sean@mess.org Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/rc/lirc_dev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/media/rc/lirc_dev.c +++ b/drivers/media/rc/lirc_dev.c @@ -302,7 +302,11 @@ static ssize_t ir_lirc_transmit_ir(struc 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) {