Hi,
I'm using Fedora 23 Linux Guest on top of VMWare workstation (version 10),
running on Windows 7 Host.
After pulling Merge branch 'akpm' from latest Linus git, my ethernet interface
doesn't work.
From dmesg, I can see that pcnet32 doesn't support 32bit PCI busmaster DMA, as
follows.
[ 1.616867] libphy: Fixed MDIO Bus: probed
[ 1.616871] pcnet32: pcnet32.c:v1.35 21.Apr.2008 tsbog...@alpha.franken.de
[ 1.617232] pcnet32: architecture does not support 32bit PCI busmaster DMA
[ 1.617304] VMware vmxnet3 virtual NIC driver - version 1.4.3.0-k-NAPI
Without the commit, pcnet32 ethernet is recognized correctly.
[ 1.173395] libphy: Fixed MDIO Bus: probed
[ 1.173399] pcnet32: pcnet32.c:v1.35 21.Apr.2008 tsbog...@alpha.franken.de
[ 1.173637] pcnet32: PCnet/PCI II 79C970A at 0x2000, 00:0c:29:07:e2:51
assigned IRQ 19
[ 1.173746] pcnet32: eth0: registered as PCnet/PCI II 79C970A
[ 1.173799] pcnet32: 1 cards_found
[ 1.173802] VMware vmxnet3 virtual NIC driver - version 1.4.2.0-k-NAPI
Below is git bisect log.
46a7fd8a9b302116b3263bc8e47f8f08c0d3a2ca is the first bad commit
commit 46a7fd8a9b302116b3263bc8e47f8f08c0d3a2ca
Author: Christoph Hellwig <h...@lst.de>
Date: Tue Nov 10 14:45:17 2015 -0800
pcnet32: use pci_set_dma_mask insted of pci_dma_supported
All drivers should be using dma_set_mask / pci_set_dma_mask to try to
set the dma mask instead of just querying it. Without that some iommu
implementations may not work.
pci_dma_supported is removed entirely, but dma_supported stays for
dma_ops implementations for now.
This patch (of 15):
This ensures the dma mask that is supported by the driver is recorded
in the device structure.
Signed-off-by: Christoph Hellwig <h...@lst.de>
Acked-by: Don Fry <pcne...@frontier.com>
Cc: "David S. Miller" <da...@davemloft.net>
Cc: "James E.J. Bottomley" <j...@parisc-linux.org>
Cc: Alan Stern <st...@rowland.harvard.edu>
Cc: Alexandre Courbot <acour...@nvidia.com>
Cc: Alexey Khoroshilov <khoroshi...@ispras.ru>
Cc: Ben Skeggs <bske...@redhat.com>
Cc: Christoph Hellwig <h...@lst.de>
Cc: Daniel Vetter <daniel.vet...@ffwll.ch>
Cc: Dave Airlie <airl...@redhat.com>
Cc: David Airlie <airl...@linux.ie>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Cc: Hans Verkuil <hverk...@xs4all.nl>
Cc: Helge Deller <del...@gmx.de>
Cc: Jiri Slaby <jsl...@suse.com>
Cc: Mauro Carvalho Chehab <mche...@osg.samsung.com>
Cc: Pawel Osciak <pa...@osciak.com>
Cc: Sakari Ailus <sakari.ai...@linux.intel.com>
Cc: Sergey Kozlov <se...@netup.ru>
Cc: Shradha Shah <ss...@solarflare.com>
Cc: Solarflare linux maintainers <linux-net-driv...@solarflare.com>
Cc: Steven Toth <st...@kernellabs.com>
Cc: Thierry Reding <tred...@nvidia.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
:040000 040000 dd0a67b69180edc5243578c8504cd2bd5d4efe24
1f92cb3d86111d725f4cf6a84076e8d9eee04362 M drivers
# git bisect log
git bisect start
# bad: [c5a37883f42be712a989e54d5d6c0159b0e56599] Merge branch 'akpm' (patches
from Andrew)
git bisect bad c5a37883f42be712a989e54d5d6c0159b0e56599
# good: [ae36ce07abbdde3521dc0ef7e32143b88718cd21] Merge branch 'drm-fixes' of
git://people.freedesktop.org/~airlied/linux
git bisect good ae36ce07abbdde3521dc0ef7e32143b88718cd21
# good: [be596aaa74090f553c61505ad03bb7a7460e5d23] Add current selection check.
git bisect good be596aaa74090f553c61505ad03bb7a7460e5d23
# good: [5dfe5b2c714a5bea0908c1e00da0e8e00535f55c] Merge branch 'misc' of
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
git bisect good 5dfe5b2c714a5bea0908c1e00da0e8e00535f55c
# bad: [111be8b28d87769dfbde901602d262902575805d] cx88: use pci_set_dma_mask
insted of pci_dma_supported
git bisect bad 111be8b28d87769dfbde901602d262902575805d
# good: [3368e8fbcda539e4f9d6cdb750f23c25021698c9] lib/string.c: add ULL suffix
to the constant definition
git bisect good 3368e8fbcda539e4f9d6cdb750f23c25021698c9
# bad: [bad007bca7b7643fea786737071c86088ba2803b] tw68-core: use
pci_set_dma_mask insted of pci_dma_supported
git bisect bad bad007bca7b7643fea786737071c86088ba2803b
# bad: [46a7fd8a9b302116b3263bc8e47f8f08c0d3a2ca] pcnet32: use pci_set_dma_mask
insted of pci_dma_supported
git bisect bad 46a7fd8a9b302116b3263bc8e47f8f08c0d3a2ca
# first bad commit: [46a7fd8a9b302116b3263bc8e47f8f08c0d3a2ca] pcnet32: use
pci_set_dma_mask insted of pci_dma_supported
