[PATCH] airspy: increase USB control message buffer size

[PATCH] airspy: increase USB control message buffer size

[Antti Palosaari]

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.

Cc: <stable@vger.kernel.org> # 3.17+
Link: https://github.com/airspy/host/issues/27
Reported-by: Benjamin Vernoux <bvernoux@gmail.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
---
 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 fcbb497..565a593 100644
--- a/drivers/media/usb/airspy/airspy.c
+++ b/drivers/media/usb/airspy/airspy.c
@@ -134,7 +134,7 @@ struct airspy {
 	int            urbs_submitted;
 
 	/* USB control message buffer */
-	#define BUF_SIZE 24
+	#define BUF_SIZE 128
 	u8 buf[BUF_SIZE];
 
 	/* Current configuration */
-- 
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