From: Nithin Sujir Date: Fri, 20 Dec 2013 01:44:11 +0000 (-0800) Subject: tg3: Expand 4g_overflow_test workaround to skb fragments of any size. X-Git-Tag: upstream/snapshot3+hdmi~3715^2~12 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=375679104ab3ccfd18dcbd7ba503734fb9a2c63a;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git tg3: Expand 4g_overflow_test workaround to skb fragments of any size. The current driver assumes that an skb fragment can only be upto jumbo size. Presumably this was a fast-path optimization. This assumption is no longer true as fragments can be upto 32k. v2: Remove unnecessary parantheses per Eric Dumazet. Cc: stable@vger.kernel.org Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index f3dd93b..15a66e4 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -7622,7 +7622,7 @@ static inline int tg3_4g_overflow_test(dma_addr_t mapping, int len) { u32 base = (u32) mapping & 0xffffffff; - return (base > 0xffffdcc0) && (base + len + 8 < base); + return base + len + 8 < base; } /* Test for TSO DMA buffers that cross into regions which are within MSS bytes