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net: tulip: winbond-840: fix build for UML

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[ Upstream commit a3d708925f ]

On i386, when builtin (not a loadable module), the winbond-840 driver
inspects boot_cpu_data to see what CPU family it is running on, and
then acts on that data. The "family" struct member (x86) does not exist
when running on UML, so prevent that test and do the default action.

Prevents this build error on UML + i386:

../drivers/net/ethernet/dec/tulip/winbond-840.c: In function ‘init_registers’:
../drivers/net/ethernet/dec/tulip/winbond-840.c:882:19: error: ‘struct cpuinfo_um’ has no member named ‘x86’
  if (boot_cpu_data.x86 <= 4) {

Fixes: 68f5d3f3b6 ("um: add PCI over virtio emulation driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-um@lists.infradead.org
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Link: https://lore.kernel.org/r/20211014050606.7288-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Randy Dunlap 2021-10-13 22:06:06 -07:00 • committed by Justin Hammond
parent 0dac98f30a
commit 275475ee50
1 changed files with 1 additions and 1 deletions

2
drivers/net/ethernet/dec/tulip/winbond-840.c
View file

@ -877,7 +877,7 @@ static void init_registers(struct net_device *dev)
8000 16 longwords 0200 2 longwords 2000 32 longwords
C000 32 longwords 0400 4 longwords */
#if defined (__i386__) && !defined(MODULE)
#if defined (__i386__) && !defined(MODULE) && !defined(CONFIG_UML)
/* When not a module we can work around broken '486 PCI boards. */
if (boot_cpu_data.x86 <= 4) {
i |= 0x4800;