From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: [PATCH 03/50] USB: usblp: spin_lock in complete() cleanup Date: Thu, 11 Jul 2013 17:05:26 +0800 Message-ID: <1373533573-12272-4-git-send-email-ming.lei@canonical.com> References: <1373533573-12272-1-git-send-email-ming.lei@canonical.com> Return-path: In-Reply-To: <1373533573-12272-1-git-send-email-ming.lei@canonical.com> Sender: linux-media-owner@vger.kernel.org To: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, Oliver Neukum , Alan Stern , linux-input@vger.kernel.org, linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-media@vger.kernel.org, alsa-devel@alsa-project.org, Ming Lei , Pete Zaitcev List-Id: linux-input@vger.kernel.org Complete() will be run with interrupt enabled, so change to spin_lock_irqsave(). Cc: Pete Zaitcev Signed-off-by: Ming Lei --- drivers/usb/class/usblp.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index d4c47d5..04163d8 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -297,6 +297,7 @@ static void usblp_bulk_read(struct urb *urb) { struct usblp *usblp = urb->context; int status = urb->status; + unsigned long flags; if (usblp->present && usblp->used) { if (status) @@ -304,14 +305,14 @@ static void usblp_bulk_read(struct urb *urb) "nonzero read bulk status received: %d\n", usblp->minor, status); } - spin_lock(&usblp->lock); + spin_lock_irqsave(&usblp->lock, flags); if (status < 0) usblp->rstatus = status; else usblp->rstatus = urb->actual_length; usblp->rcomplete = 1; wake_up(&usblp->rwait); - spin_unlock(&usblp->lock); + spin_unlock_irqrestore(&usblp->lock, flags); usb_free_urb(urb); } @@ -320,6 +321,7 @@ static void usblp_bulk_write(struct urb *urb) { struct usblp *usblp = urb->context; int status = urb->status; + unsigned long flags; if (usblp->present && usblp->used) { if (status) @@ -327,7 +329,7 @@ static void usblp_bulk_write(struct urb *urb) "nonzero write bulk status received: %d\n", usblp->minor, status); } - spin_lock(&usblp->lock); + spin_lock_irqsave(&usblp->lock, flags); if (status < 0) usblp->wstatus = status; else @@ -335,7 +337,7 @@ static void usblp_bulk_write(struct urb *urb) usblp->no_paper = 0; usblp->wcomplete = 1; wake_up(&usblp->wwait); - spin_unlock(&usblp->lock); + spin_unlock_irqrestore(&usblp->lock, flags); usb_free_urb(urb); } -- 1.7.9.5