Re: [PATCH] drm/r128: fix build for UML
From: Johannes Berg <johannes@sipsolutions.net>
Date: 2021-09-02 07:10:35
Also in:
dri-devel, lkml
On Wed, 2021-09-01 at 19:17 -0700, Randy Dunlap wrote:
Fix a build error on CONFIG_UML, which does not support (provide)
wbinvd(). UML can use the generic mb() instead.
../drivers/gpu/drm/r128/ati_pcigart.c: In function ‘drm_ati_pcigart_init’:
../drivers/gpu/drm/r128/ati_pcigart.c:218:2: error: implicit declaration of function ‘wbinvd’ [-Werror=implicit-function-declaration]
wbinvd();
^~~~~~
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") # pre-git
Arguably, that could be
Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
because prior to that, Kconfig options depending on PCI couldn't be
selected on ARCH=um.
johannes
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