Kevin Hao 0a4b5a2488 gianfar: Fix dma check map error when DMA_API_DEBUG is enabled ... We need to use dma_mapping_error() to check the dma address returned by dma_map_single/page(). Otherwise we would get warning like this: WARNING: at lib/dma-debug.c:1140 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-rc2-next-20141029 #196 task: c0834300 ti: effe6000 task.ti: c0874000 NIP: c02b2c98 LR: c02b2c98 CTR: c030abc4 REGS: effe7d70 TRAP: 0700 Not tainted (3.18.0-rc2-next-20141029) MSR: 00021000 <CE,ME> CR: 22044022 XER: 20000000 GPR00: c02b2c98 effe7e20 c0834300 00000098 00021000 00000000 c030b898 00000003 GPR08: 00000001 00000000 00000001 749eec9d 22044022 1001abe0 00000020 ef278678 GPR16: ef278670 ef278668 ef278660 070a8040 c087f99c c08cdc60 00029000 c0840d44 GPR24: c08be6e8 c0840000 effe7e78 ef041340 00000600 ef114e10 00000000 c08be6e0 NIP [c02b2c98] check_unmap+0x51c/0x9e4 LR [c02b2c98] check_unmap+0x51c/0x9e4 Call Trace: [effe7e20] [c02b2c98] check_unmap+0x51c/0x9e4 (unreliable) [effe7e70] [c02b31d8] debug_dma_unmap_page+0x78/0x8c [effe7ed0] [c03d1640] gfar_clean_rx_ring+0x208/0x488 [effe7f40] [c03d1a9c] gfar_poll_rx_sq+0x3c/0xa8 [effe7f60] [c04f8714] net_rx_action+0xc0/0x178 [effe7f90] [c00435a0] __do_softirq+0x100/0x1fc [effe7fe0] [c0043958] irq_exit+0xa4/0xc8 [effe7ff0] [c000d14c] call_do_irq+0x24/0x3c [c0875e90] [c00048a0] do_IRQ+0x8c/0xf8 [c0875eb0] [c000ed10] ret_from_except+0x0/0x18 For TX, we need to unmap the pages which has already been mapped and free the skb before return. For RX, move the dma mapping and error check to gfar_new_skb(). We would reuse the original skb in the rx ring when either allocating skb failure or dma mapping error. Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com> Reviewed-by: Claudiu Manoil <claudiu.manoil@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-12-11 14:27:14 -05:00
..
fs_enet	net: fs_enet: set back promiscuity mode after restart	2014-10-22 15:33:13 -04:00
fec_main.c	net: fec: only enable mdio interrupt before phy device link up	2014-12-10 23:37:01 -05:00
fec_mpc52xx_phy.c	net: fec_mpc52xx_phy: remove unnecessary dev_set_drvdata()	2013-08-21 12:27:04 -07:00
fec_mpc52xx.c	fec_mpc52xx: delete unneeded test before of_node_put	2014-08-08 10:28:08 -07:00
fec_mpc52xx.h	drivers/net: fix up stale paths from driver reorg	2012-01-30 12:54:40 -05:00
fec_ptp.c	net: fec: ptp: fix convergence issue to support LinuxPTP stack	2014-10-15 16:40:11 -04:00
fec.h	net: fec: init maximum receive buffer size for ring1 and ring2	2014-11-24 15:22:57 -05:00
fsl_pq_mdio.c	net/fsl_pq_mdio: Replace spin_event_timeout() with arch independent	2014-10-09 01:40:37 -04:00
gianfar_ethtool.c	gianfar: Implement PAUSE frame generation support	2014-10-29 14:33:16 -04:00
gianfar_ptp.c	ptp: drivers: set the number of programmable pins.	2014-03-21 14:21:14 -04:00
gianfar.c	gianfar: Fix dma check map error when DMA_API_DEBUG is enabled	2014-12-11 14:27:14 -05:00
gianfar.h	gianfar: Implement PAUSE frame generation support	2014-10-29 14:33:16 -04:00
Kconfig	net/fsl: xgmac_mdio is dependent on OF_MDIO	2014-06-11 15:50:59 -07:00
Makefile	gianfar: Remove sysfs stubs for FIFOCFG and stashing	2014-02-18 15:03:02 -05:00
ucc_geth_ethtool.c	net: get rid of SET_ETHTOOL_OPS	2014-05-13 17:43:20 -04:00
ucc_geth.c	net: ucc_geth: fix build failure	2014-08-10 21:40:15 -07:00
ucc_geth.h	net: remove skb recycling	2012-10-07 00:40:54 -04:00
xgmac_mdio.c	net/fsl: Add format length modifier to avoid negative values	2014-07-30 19:58:09 -07:00