Tyrel Datwyler 756af9c642 ibmveth: fix DMA unmap error in ibmveth_xmit_start error path ... Commit 33a48ab105 ("ibmveth: Fix DMA unmap error") fixed an issue in the normal code path of ibmveth_xmit_start() that was originally introduced by Commit 6e8ab30ec6 ("ibmveth: Add scatter-gather support"). This original fix missed the error path where dma_unmap_page is wrongly called on the header portion in descs[0] which was mapped with dma_map_single. As a result a failure to DMA map any of the frags results in a dmesg warning when CONFIG_DMA_API_DEBUG is enabled. ------------[ cut here ]------------ DMA-API: ibmveth 30000002: device driver frees DMA memory with wrong function [device address=0x000000000a430000] [size=172 bytes] [mapped as page] [unmapped as single] WARNING: CPU: 1 PID: 8426 at kernel/dma/debug.c:1085 check_unmap+0x4fc/0xe10 ... <snip> ... DMA-API: Mapped at: ibmveth_start_xmit+0x30c/0xb60 dev_hard_start_xmit+0x100/0x450 sch_direct_xmit+0x224/0x490 __qdisc_run+0x20c/0x980 __dev_queue_xmit+0x1bc/0xf20 This fixes the API misuse by unampping descs[0] with dma_unmap_single. Fixes: 6e8ab30ec6 ("ibmveth: Add scatter-gather support") Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-12-31 15:40:11 -08:00
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ehea	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-10-03 21:00:17 -07:00
emac	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-12-09 21:43:31 -08:00
Kconfig	Driver for IBM System i/p VNIC protocol	2015-12-28 00:12:13 -05:00
Makefile	Driver for IBM System i/p VNIC protocol	2015-12-28 00:12:13 -05:00
ibmveth.c	ibmveth: fix DMA unmap error in ibmveth_xmit_start error path	2018-12-31 15:40:11 -08:00
ibmveth.h	ibmveth: Support to enable LSO/CSO for Trunk VEA.	2017-05-21 13:29:01 -04:00
ibmvnic.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-12-20 11:53:36 -08:00
ibmvnic.h	ibmvnic: Convert reset work item mutex to spin lock	2018-12-10 17:34:25 -08:00