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Commit 7aa47831 authored by Andrew Chant's avatar Andrew Chant Committed by Dennis Cagle
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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: default avatarAndrew Chant <achant@google.com>
Git-commit: d740e7228bd1578ed01762998b2a86e7df56e608
Git-repo: https://android.googlesource.com/kernel/msm


Signed-off-by: default avatarDennis Cagle <d-cagle@codeaurora.org>
parent a1c3a94c

drivers/input/touchscreen/synaptics_dsx_2.6/synaptics_dsx_i2c.c

+3 −3
Original line number Diff line number Diff line
@@ -445,11 +445,11 @@ 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) {