[PATCH 14/50] USB: serial: mos7720: spin_lock in complete() cleanup
From: Ming Lei <hidden>
Date: 2013-07-11 09:08:30
Also in:
alsa-devel, linux-input, linux-media, linux-wireless
Subsystem:
the rest, usb serial subsystem, usb subsystem · Maintainers:
Linus Torvalds, Johan Hovold, Greg Kroah-Hartman
Complete() will be run with interrupt enabled, so change to spin_lock_irqsave(). Cc: Johan Hovold <redacted> Signed-off-by: Ming Lei <redacted> --- drivers/usb/serial/mos7720.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 51da424..9b8c866 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c@@ -338,14 +338,15 @@ static void async_complete(struct urb *urb) { struct urbtracker *urbtrack = urb->context; int status = urb->status; + unsigned long flags; if (unlikely(status)) dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); /* remove the urbtracker from the active_urbs list */ - spin_lock(&urbtrack->mos_parport->listlock); + spin_lock_irqsave(&urbtrack->mos_parport->listlock, flags); list_del(&urbtrack->urblist_entry); - spin_unlock(&urbtrack->mos_parport->listlock); + spin_unlock_irqrestore(&urbtrack->mos_parport->listlock, flags); kref_put(&urbtrack->ref_count, destroy_urbtracker); }
--
1.7.9.5
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