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(parent: 8afb6c4) | 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)
commitd4dc35f26e1017e2a632339ecae43706cbc06986
tree30f67f7dab8e59c32d42a949521972cb5a5dae6etree | snapshot (tar.gz zip)
parent8afb6c474b0dd8f9cf7e122a19c71924566fdb97commit | 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 | blame | history