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23 October 2021, 00:29:24 UTC
Revision 71460af58f8565110160283849db4d6bf7e1efa1 authored by Linus Torvalds on 19 April 2011, 17:54:44 UTC, committed by Linus Torvalds on 19 April 2011, 17:54:44 UTC 
Revert "[media] V4L: videobuf, don't use dma addr as physical"
 
This reverts commit 35d9f510b67b10338161aba6229d4f55b4000f5b.

Quoth Jiri Slaby:
 "It fixes mmap when IOMMU is used on x86 only, but breaks architectures
  like ARM or PPC where virt_to_phys(dma_alloc_coherent) doesn't work.
  We need there dma_mmap_coherent or similar (the trickery what
  snd_pcm_default_mmap does but in some saner way).  But this cannot be
  done at this phase."

Requested-by: Jiri Slaby <jslaby@suse.cz>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent f28c617
History
Tip revision: 71460af58f8565110160283849db4d6bf7e1efa1 authored by Linus Torvalds on 19 April 2011, 17:54:44 UTC
Revert "[media] V4L: videobuf, don't use dma addr as physical"
Tip revision: 71460af
File Mode Size
Documentation
arch
block
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore -rw-r--r-- 941 bytes
.mailmap -rw-r--r-- 4.1 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 91.7 KB
Kbuild -rw-r--r-- 2.4 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 188.2 KB
Makefile -rw-r--r-- 51.1 KB
README -rw-r--r-- 17.1 KB
REPORTING-BUGS -rw-r--r-- 3.3 KB

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