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176f0e841e
After the commit "ath9k: improve dma map failure handling", the wrong buffer was DMA-unmapped, introducing warnings like the one below. This patch fixes the issue. WARNING: at /home/sujith/dev/wireless-testing/lib/dma-debug.c:986 check_sync+0x4bc/0x580() Hardware name: LIFEBOOK AH531 ath9k 0000:02:00.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address=0x00000000d9012800] [size=48 bytes] Pid: 86, comm: kworker/u:5 Tainted: G W O 3.9.0-rc8-wl-debug #106 Call Trace: [<ffffffff810410c0>] warn_slowpath_common+0x70/0xa0 [<ffffffff8104113c>] warn_slowpath_fmt+0x4c/0x50 [<ffffffff8125432c>] check_sync+0x4bc/0x580 [<ffffffff8109e5f7>] ? trace_hardirqs_on_caller+0xa7/0x190 [<ffffffff8109e6ed>] ? trace_hardirqs_on+0xd/0x10 [<ffffffff81254488>] debug_dma_sync_single_for_device+0x48/0x50 [<ffffffffa0a53825>] ? ath9k_iowrite32+0x35/0x90 [ath9k] [<ffffffff812512f0>] ? swiotlb_tbl_sync_single+0x50/0x90 [<ffffffff81251350>] ? swiotlb_sync_single+0x20/0x30 [<ffffffff8125137f>] ? swiotlb_sync_single_for_device+0xf/0x20 [<ffffffffa0a58baf>] ath_rx_edma_buf_link+0xef/0x140 [ath9k] [<ffffffffa0a58c4e>] ath_rx_addbuffer_edma+0x4e/0x90 [ath9k] [<ffffffffa0a59c51>] ath_startrecv+0xf1/0x120 [ath9k] [<ffffffffa0a550e0>] ath_complete_reset+0x20/0x130 [ath9k] [<ffffffffa0a5790d>] ath_reset_internal+0x10d/0x210 [ath9k] [<ffffffffa0a5878c>] ath9k_config+0x47c/0x7b0 [ath9k] [<ffffffffa06d4978>] ieee80211_hw_config+0x88/0x3f0 [mac80211] [<ffffffffa06d4a3f>] ? ieee80211_hw_config+0x14f/0x3f0 [mac80211] [<ffffffffa06dbed1>] __ieee80211_scan_completed+0xc1/0x440 [mac80211] [<ffffffffa06dd002>] ieee80211_scan_work+0x82/0x440 [mac80211] [<ffffffff810606a3>] process_one_work+0x1e3/0x530 [<ffffffff81060641>] ? process_one_work+0x181/0x530 [<ffffffff8106163f>] worker_thread+0x10f/0x3c0 [<ffffffff81061530>] ? manage_workers+0x330/0x330 [<ffffffff810665da>] kthread+0xea/0xf0 [<ffffffff810664f0>] ? kthread_create_on_node+0x140/0x140 [<ffffffff8146085c>] ret_from_fork+0x7c/0xb0 [<ffffffff810664f0>] ? kthread_create_on_node+0x140/0x140 Cc: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Acked-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> |
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| appletalk | ||
| arcnet | ||
| bonding | ||
| caif | ||
| can | ||
| cris | ||
| dsa | ||
| ethernet | ||
| fddi | ||
| hamradio | ||
| hippi | ||
| hyperv | ||
| ieee802154 | ||
| irda | ||
| phy | ||
| plip | ||
| ppp | ||
| slip | ||
| team | ||
| usb | ||
| vmxnet3 | ||
| wan | ||
| wimax | ||
| wireless | ||
| xen-netback | ||
| dummy.c | ||
| eql.c | ||
| ifb.c | ||
| Kconfig | ||
| LICENSE.SRC | ||
| loopback.c | ||
| macvlan.c | ||
| macvtap.c | ||
| Makefile | ||
| mdio.c | ||
| mii.c | ||
| netconsole.c | ||
| ntb_netdev.c | ||
| rionet.c | ||
| sb1000.c | ||
| Space.c | ||
| sungem_phy.c | ||
| tun.c | ||
| veth.c | ||
| virtio_net.c | ||
| vxlan.c | ||
| xen-netfront.c | ||