mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-10-01 01:35:54 -04:00
35 lines
1.4 KiB
Diff
35 lines
1.4 KiB
Diff
|
From d740e7228bd1578ed01762998b2a86e7df56e608 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Andrew Chant <achant@google.com>
|
||
|
|
Date: Fri, 2 Dec 2016 20:49:26 -0800
|
||
|
|
Subject: [PATCH] input: synaptics_dsx: reallocate buffer under lock.
|
||
|
|
|
||
|
|
Prevent concurrent usage & re-allocation of the wr_buf variable.
|
||
|
|
Based off patch by chengengjia <chengjia4574@gmail.com>.
|
||
|
|
|
||
|
|
BUG: 33001936
|
||
|
|
Change-Id: I88d78e1ec0fc9e88b1e6824c06161b67d01136ec
|
||
|
|
Signed-off-by: Andrew Chant <achant@google.com>
|
||
|
|
---
|
||
|
|
drivers/input/touchscreen/synaptics_dsx_htc_2.6/synaptics_dsx_i2c.c | 6 +++---
|
||
|
|
1 file changed, 3 insertions(+), 3 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/drivers/input/touchscreen/synaptics_dsx_htc_2.6/synaptics_dsx_i2c.c b/drivers/input/touchscreen/synaptics_dsx_htc_2.6/synaptics_dsx_i2c.c
|
||
|
|
index 5312f86a93470..3acd4d54bb6d5 100644
|
||
|
|
--- a/drivers/input/touchscreen/synaptics_dsx_htc_2.6/synaptics_dsx_i2c.c
|
||
|
|
+++ b/drivers/input/touchscreen/synaptics_dsx_htc_2.6/synaptics_dsx_i2c.c
|
||
|
|
@@ -557,11 +557,11 @@ static int synaptics_rmi4_i2c_write(struct synaptics_rmi4_data *rmi4_data,
|
||
|
|
struct i2c_client *i2c = to_i2c_client(rmi4_data->pdev->dev.parent);
|
||
|
|
struct i2c_msg msg[1];
|
||
|
|
|
||
|
|
+ mutex_lock(&rmi4_data->rmi4_io_ctrl_mutex);
|
||
|
|
+
|
||
|
|
retval = synaptics_rmi4_i2c_alloc_buf(rmi4_data, length + 1);
|
||
|
|
if (retval < 0)
|
||
|
|
- return retval;
|
||
|
|
-
|
||
|
|
- mutex_lock(&rmi4_data->rmi4_io_ctrl_mutex);
|
||
|
|
+ goto exit;
|
||
|
|
|
||
|
|
retval = synaptics_rmi4_i2c_set_page(rmi4_data, addr);
|
||
|
|
if (retval != PAGE_SELECT_LEN) {
|