shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-06 19:08:57 +09:00
Code Issues Packages Projects Releases Wiki Activity

UPSTREAM: media: rc: get start time just before calling driver tx

Browse Source 
The current code gets the start time before copying the IR from
userspace (could cause page faults) and encoding IR. This means
that the gap calculation could be off.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 2942273701)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
This commit is contained in:
Sean Young
2018-02-12 09:00:28 -05:00
committed by Tao Huang
parent 8934db5ea3
commit 7d519fb37b
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/rc/lirc_dev.c
View File

@@ -253,8 +253,6 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
goto out_unlock;
}
start = ktime_get();
if (!dev->tx_ir) {
ret = -EINVAL;
goto out_unlock;
@@ -347,6 +345,8 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
duration += txbuf[i];
}
start = ktime_get();
ret = dev->tx_ir(dev, txbuf, count);
if (ret < 0)
goto out_kfree;