Messages in this thread Patch in this message | | | Subject | [PATCH RFT] net: Fix Neptune ethernet driver to check dma mapping error | From | Shuah Khan <> | Date | Fri, 20 Jul 2012 15:27:59 -0600 |
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Request for testing, since I don't have the hardware to test.
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Fix Neptune ethernet driver to check dma mapping error after map_page() interface returns.
Signed-off-by: Shuah Khan <shuah.khan@hp.com> Cc: <stable@vger.kernel.org> --- drivers/net/ethernet/sun/niu.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c index 8c726b7..60d5c03 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) -- 1.7.9.5
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