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authorOliver Neukum <oneukum@suse.de>2008-07-27 14:01:59 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-07-27 18:07:57 -0300
commitee56a4d3e39c2baafd06aaf26d975a7c9b05e3a2 (patch)
treec33575d547a0613eeaaa5c289956cf79925d53fb
parentee281b856d4e4921da24387ab116bb0855c2efaa (diff)
V4L/DVB (8544): gspca: probe/open race.
The device is flagged present after it is registered. During that window calls to open() that should work fail with -ENODEV. Reversing the order fixes the race. Signed-off-by: Oliver Neukum <oneukum@suse.de> Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r--drivers/media/video/gspca/gspca.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index bc301bae048..3a051c925ff 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1758,6 +1758,7 @@ int gspca_dev_probe(struct usb_interface *intf,
memcpy(&gspca_dev->fops, &dev_fops, sizeof gspca_dev->fops);
gspca_dev->vdev.fops = &gspca_dev->fops;
gspca_dev->fops.owner = module; /* module protection */
+ gspca_dev->present = 1;
ret = video_register_device(&gspca_dev->vdev,
VFL_TYPE_GRABBER,
video_nr);
@@ -1766,7 +1767,6 @@ int gspca_dev_probe(struct usb_interface *intf,
goto out;
}
- gspca_dev->present = 1;
usb_set_intfdata(intf, gspca_dev);
PDEBUG(D_PROBE, "probe ok");
return 0;