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(parent: 7560679) | patch
dwc_eth_qos: release descriptors outside netif_tx_lock
authorLars Persson <lars.persson@axis.com>
Mon, 29 Feb 2016 15:22:31 +0000 (16:22 +0100)
committerDavid S. Miller <davem@davemloft.net>
Wed, 2 Mar 2016 19:57:14 +0000 (14:57 -0500)
commitb591300ec2b9794bbb2a564648dfdc9f2a619943
tree30f67f7dab8e59c32d42a949521972cb5a5dae6etree | snapshot
parent7560679675019a6d6f12fd0d2fd76d033f910165commit | diff
dwc_eth_qos: release descriptors outside netif_tx_lock

To prepare for using the CMA, we can not be in atomic context when
de-allocating DMA buffers.

The tx lock was needed only to protect the hw reset against the xmit
handler. Now we briefly grab the tx lock while stopping the queue to
make sure no thread is inside or will enter the xmit handler.

Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/synopsys/dwc_eth_qos.c diff | blob | history
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