From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Date: Fri, 23 Oct 2015 21:46:40 +0000 Subject: [PATCH 2/2] sh_eth: fix RX buffer size calculation Message-Id: <1571476.HbCo5gVB8j@wasted.cogentembedded.com> List-Id: References: <2249923.hKhT9K6gME@wasted.cogentembedded.com> In-Reply-To: <2249923.hKhT9K6gME@wasted.cogentembedded.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Cc: linux-sh@vger.kernel.org The RX buffer size calulation failed to account for the length granularity (which is now 32 bytes)... Signed-off-by: Sergei Shtylyov --- drivers/net/ethernet/renesas/sh_eth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Index: net/drivers/net/ethernet/renesas/sh_eth.c =================================--- net.orig/drivers/net/ethernet/renesas/sh_eth.c +++ net/drivers/net/ethernet/renesas/sh_eth.c @@ -1127,7 +1127,7 @@ static void sh_eth_ring_format(struct ne struct sh_eth_txdesc *txdesc = NULL; int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring; int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring; - int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN - 1; + int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1; dma_addr_t dma_addr; mdp->cur_rx = 0; @@ -1450,7 +1450,7 @@ static int sh_eth_rx(struct net_device * struct sk_buff *skb; u16 pkt_len = 0; u32 desc_status; - int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN - 1; + int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1; dma_addr_t dma_addr; boguscnt = min(boguscnt, *quota);