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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: Andrey Shvetsov <andrey.shvetsov@k2l.de> Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 5 additions and 5 deletions
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@ -663,15 +663,11 @@ static int hdm_enqueue(struct most_interface *iface, int channel,
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init_completion(&anchor->urb_compl);
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mbo->priv = anchor;
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spin_lock_irqsave(&mdev->anchor_list_lock[channel], flags);
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list_add_tail(&anchor->list, &mdev->anchor_list[channel]);
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spin_unlock_irqrestore(&mdev->anchor_list_lock[channel], flags);
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if ((mdev->padding_active[channel]) &&
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(conf->direction & MOST_CH_TX))
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if (hdm_add_padding(mdev, channel, mbo)) {
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retval = -EIO;
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goto _error_1;
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goto _error;
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}
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urb->transfer_dma = mbo->bus_address;
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@ -699,6 +695,10 @@ static int hdm_enqueue(struct most_interface *iface, int channel,
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}
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urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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spin_lock_irqsave(&mdev->anchor_list_lock[channel], flags);
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list_add_tail(&anchor->list, &mdev->anchor_list[channel]);
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spin_unlock_irqrestore(&mdev->anchor_list_lock[channel], flags);
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retval = usb_submit_urb(urb, GFP_KERNEL);
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if (retval) {
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dev_err(dev, "URB submit failed with error %d.\n", retval);
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