Patch "Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen" has been added to the 3.10-stable tree

This is a note to let you know that I've just added the patch titled

Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen

to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
input-usbtouchscreen-avoid-unresponsive-tsc-30-touch-screen.patch
and it can be found in the queue-3.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Bernhard Bender <[email protected]>
Date: Thu, 23 Jul 2015 13:58:08 -0700
Subject: Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen

From: Bernhard Bender <[email protected]>

commit 968491709e5b1aaf429428814fff3d932fa90b60 upstream.

This patch fixes a problem in the usbtouchscreen driver for DMC TSC-30 touch screen. Due to a missing delay between the RESET and SET_RATE commands, the touch screen may become unresponsive during system startup or driver loading.

According to the DMC documentation, a delay is needed after the RESET command to allow the chip to complete its internal initialization. As this delay is not guaranteed, we had a system where the touch screen occasionally did not send any touch data. There was no other indication of the problem.

The patch fixes the problem by adding a 150ms delay between the RESET and SET_RATE commands.

---
 drivers/input/touchscreen/usbtouchscreen.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -626,6 +626,9 @@ static int dmc_tsc10_init(struct usbtouc
 		goto err_out;
 	}
 
+	/* TSC-25 data sheet specifies a delay after the RESET command */
+	msleep(150);
+
 	/* set coordinate output rate */
 	buf[0] = buf[1] = 0xFF;
 	ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),

Patches currently in stable-queue which might be from [email protected] are

queue-3.10/input-usbtouchscreen-avoid-unresponsive-tsc-30-touch-screen.patch