From: Shuah Khan <shuah.khan@hp.com> Date: Fri, 20 Jul 2012 11:50:35 +0000 (+0000) Subject: niu: Fix to check for dma mapping errors. X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ec2deec1f3520c467e3fb64f11a5d1e9c073e376;p=openwrt%2Fstaging%2Fblogic.git niu: Fix to check for dma mapping errors. Fix Neptune ethernet driver to check dma mapping error after map_page() interface returns. Signed-off-by: Shuah Khan <shuah.khan@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net> --- diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c index 8c726b7004d3..60d5c035d946 100644 --- a/drivers/net/ethernet/sun/niu.c +++ b/drivers/net/ethernet/sun/niu.c @@ -3335,6 +3335,10 @@ static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp, addr = np->ops->map_page(np->device, page, 0, PAGE_SIZE, DMA_FROM_DEVICE); + if (!addr) { + __free_page(page); + return -ENOMEM; + } niu_hash_page(rp, page, addr); if (rp->rbr_blocks_per_page > 1)