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| author |   Thomas Zimmermann <tzimmermann@suse.de> | 2024-01-05 09:25:17 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-01-08 09:59:47 +0100 |
| commit | f5b6fd4ea320176468597afd8343e4b94544f986 (patch) | |
| tree | fa42ceb769231552ed1f26cca5ee89a4aed1f44a /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | drm/sched: Return an error code only as a constant in drm_sched_init() (diff) | |
| download | wireguard-linux-f5b6fd4ea320176468597afd8343e4b94544f986.tar.xz wireguard-linux-f5b6fd4ea320176468597afd8343e4b94544f986.zip | |
drm/mgag200: Fix caching setup for remapped video memory
I/O video memory for the framebuffer supports write-combine caching
mode. Simplify the driver's code that sets up the caching mode.
* Map video memory with ioremap_wc(), which automatically sets up
the PAT entry with write-combine caching.
* Remove the now obsolete call to devm_arch_io_reserve_memtype_wc().
It is only required to mmap the video memory to user space, which the
driver doesn't do.
* According to the PAT documentation, arch_phys_wc_add() is best
called after remapping I/O memory, so move it after ioremap.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240105082714.21881-1-tzimmermann@suse.de
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions