Commit dec0c46a authored by Akinobu Mita's avatar Akinobu Mita Committed by Mauro Carvalho Chehab
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V4L/DVB (9494): anysee: initialize anysee_usb_mutex statically 



anysee_usb_mutex is initialized at every time the anysee device is probed.
If the second anysee device is probed while anysee_usb_mutex is locked by
the first anysee device, the mutex is broken.

This patch fixes by initialize anysee_usb_mutex statically rather
than initialize at probe time.

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 8268c8f5

drivers/media/dvb/dvb-usb/anysee.c

+1 −3
Original line number Diff line number Diff line
@@ -46,7 +46,7 @@ module_param_named(delsys, dvb_usb_anysee_delsys, int, 0644); 
MODULE_PARM_DESC(delsys, "select delivery mode (0=DVB-C, 1=DVB-T)");

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);



static struct mutex anysee_usb_mutex;

static DEFINE_MUTEX(anysee_usb_mutex);



static int anysee_ctrl_msg(struct dvb_usb_device *d, u8 *sbuf, u8 slen,

	u8 *rbuf, u8 rlen)
@@ -456,8 +456,6 @@ static int anysee_probe(struct usb_interface *intf, 
	struct usb_host_interface *alt;

	int ret;



	mutex_init(&anysee_usb_mutex);



	/* There is one interface with two alternate settings.

	   Alternate setting 0 is for bulk transfer.

	   Alternate setting 1 is for isochronous transfer.