Author: nbd Date: 2014-09-06 19:51:44 +0200 (Sat, 06 Sep 2014) New Revision: 42428
Modified: trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c Log: ar71xx: fix off-by-one error in packet descriptor splitting (patch from #13072) Signed-off-by: Felix Fietkau <[email protected]> Modified: trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c =================================================================== --- trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c 2014-09-06 17:51:39 UTC (rev 42427) +++ trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c 2014-09-06 17:51:44 UTC (rev 42428) @@ -704,7 +704,12 @@ if (cur_len > split) { cur_len = split; - if (len < split + 4) + + /* + * TX will hang if DMA transfers <= 4 bytes, + * make sure next segment is more than 4 bytes long. + */ + if (len <= split + 4) cur_len -= 4; } _______________________________________________ openwrt-commits mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-commits
