[3.19.y-ckt stable] Patch "[media] airspy: increase USB control message buffer size" has been added to the 3.19.y-ckt tree

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    [media] airspy: increase USB control message buffer size

to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue

This patch is scheduled to be released in version 3.19.8-ckt13.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

---8<------------------------------------------------------------

>From 2adba4bf946fe5764a9ba68d101f5d1cbf342fbf Mon Sep 17 00:00:00 2001
From: Antti Palosaari <crope at iki.fi>
Date: Mon, 26 Oct 2015 18:58:14 -0200
Subject: [media] airspy: increase USB control message buffer size

commit aa0850e1d56623845b46350ffd971afa9241886d upstream.

Driver requested device firmware version string during probe using
only 24 byte long buffer. That buffer is too small for newer firmware
versions, which causes device firmware hang - device stops responding
to any commands after that. Increase buffer size to 128 which should
be enough for any current and future version strings.

Link: https://github.com/airspy/host/issues/27

Reported-by: Benjamin Vernoux <bvernoux at gmail.com>
Signed-off-by: Antti Palosaari <crope at iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab at osg.samsung.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/media/usb/airspy/airspy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
index 4069234..a50750c 100644
--- a/drivers/media/usb/airspy/airspy.c
+++ b/drivers/media/usb/airspy/airspy.c
@@ -132,7 +132,7 @@ struct airspy {
 	int            urbs_submitted;

 	/* USB control message buffer */
-	#define BUF_SIZE 24
+	#define BUF_SIZE 128
 	u8 buf[BUF_SIZE];

 	/* Current configuration */
--
1.9.1