From: Franck Bui-Huu <[EMAIL PROTECTED]>
ctrl_complete functions acquires ctx->lock and tries to unlink
all queued urbs in case of errors through usb_unlink_urb func.
In its turn usb_unlink_urb calls, through the hcd driver,
usb_hcd_giveback_urb which calls ctrl_complete again. At this
time, ctx->lock is already taken by the same function.
Signed-off-by: Franck Bui-Huu <[EMAIL PROTECTED]>
Cc: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/misc/usbtest.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index ccc5e82..b42ae6b 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -802,7 +802,9 @@ error:
if (u == urb || !u->dev)
continue;
+ spin_unlock(&ctx->lock);
status = usb_unlink_urb (u);
+ spin_lock(&ctx->lock);
switch (status) {
case -EINPROGRESS:
case -EBUSY:
--
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