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Commit ec7e0a18 authored by Christian Gromm's avatar Christian Gromm Committed by Greg Kroah-Hartman
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staging: most: hdm-usb: reduce context of list_del mutex 



This patch reduces context of the list_del mutex for the function
hdm_enqueue().

Signed-off-by: default avatarAndrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: default avatarChristian Gromm <christian.gromm@microchip.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 99d75346

drivers/staging/most/hdm-usb/hdm_usb.c

+5 −5
Original line number Diff line number Diff line
@@ -663,15 +663,11 @@ static int hdm_enqueue(struct most_interface *iface, int channel, 
	init_completion(&anchor->urb_compl);

	mbo->priv = anchor;



	spin_lock_irqsave(&mdev->anchor_list_lock[channel], flags);

	list_add_tail(&anchor->list, &mdev->anchor_list[channel]);

	spin_unlock_irqrestore(&mdev->anchor_list_lock[channel], flags);



	if ((mdev->padding_active[channel]) &&

	    (conf->direction & MOST_CH_TX))

		if (hdm_add_padding(mdev, channel, mbo)) {

			retval = -EIO;

			goto _error_1;

			goto _error;

		}



	urb->transfer_dma = mbo->bus_address;
@@ -699,6 +695,10 @@ static int hdm_enqueue(struct most_interface *iface, int channel, 
	}

	urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;



	spin_lock_irqsave(&mdev->anchor_list_lock[channel], flags);

	list_add_tail(&anchor->list, &mdev->anchor_list[channel]);

	spin_unlock_irqrestore(&mdev->anchor_list_lock[channel], flags);



	retval = usb_submit_urb(urb, GFP_KERNEL);

	if (retval) {

		dev_err(dev, "URB submit failed with error %d.\n", retval);