linux/arch
David Brownell aa24886e37 dma_free_coherent() needs irqs enabled (sigh)
On at least ARM (and I'm told MIPS too) dma_free_coherent() has a newish
call context requirement: unlike its dma_alloc_coherent() sibling, it may
not be called with IRQs disabled.  (This was new behavior on ARM as of late
2005, caused by ARM SMP updates.) This little surprise can be annoyingly
driver-visible.

Since it looks like that restriction won't be removed, this patch changes
the definition of the API to include that requirement.  Also, to help catch
nonportable drivers, it updates the x86 and swiotlb versions to include the
relevant warnings.  (I already observed that it trips on the
bus_reset_tasklet of the new firewire_ohci driver.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Miller <davem@davemloft.net>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 15:03:15 -07:00
..
alpha alpha: -Werror fixes for sys_titan.c 2007-08-11 15:47:42 -07:00
arm Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight 2007-10-11 19:19:50 -07:00
avr32 [AVR32] Fix random segfault with preemption 2007-10-11 13:32:56 +02:00
blackfin Blackfin arch: Remove cruft - CONFIG_DEBUG_SERIAL_EARLY_INIT and DEBUG_KERNEL_START 2007-10-10 22:26:33 +08:00
cris ide: fix hidden dependencies on CONFIG_IDE_GENERIC 2007-08-20 22:42:54 +02:00
frv FRV: connect up fallocate 2007-08-11 15:47:40 -07:00
h8300 H8/300: Fix misnamed "CONFIG_BLKDEV_RESERVE_ADDRESS" Kconfig variable 2007-09-11 17:21:20 -07:00
i386 x86: remove migration makefile tweaks 2007-10-11 11:20:06 +02:00
ia64 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2007-10-11 19:40:14 -07:00
m32r m32r: Rename STI/CLI macros 2007-09-06 11:10:56 +09:00
m68k m68k(nommu): add missing syscalls 2007-09-11 17:21:20 -07:00
m68knommu m68k(nommu): add missing syscalls 2007-09-11 17:21:20 -07:00
mips Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2007-10-11 19:40:14 -07:00
parisc [PARISC] Add NOTES section 2007-08-27 00:29:25 -04:00
powerpc missed bio_endio() in axonram 2007-10-11 23:04:25 -07:00
ppc [POWERPC] Remove redundant reference to non-existent CONFIG_BOOTIMG 2007-10-09 21:02:00 +10:00
s390 [CRYPTO] sha: Add header file for SHA definitions 2007-10-10 16:55:50 -07:00
sh [SOFTIRQ]: Remove do_softirq() symbol export. 2007-10-10 16:48:36 -07:00
sh64 sh64: arch/sh64/kernel/setup.c: duplicate include removal. 2007-08-12 12:18:54 +09:00
sparc [SPARC]: Fix EBUS use of uninitialized variable. 2007-09-27 13:09:28 -07:00
sparc64 [NET]: Make the device list and device lookups per namespace. 2007-10-10 16:49:10 -07:00
um i386/x86_64: move headers to include/asm-x86 2007-10-11 11:20:03 +02:00
v850 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
x86 dma_free_coherent() needs irqs enabled (sigh) 2007-10-12 15:03:15 -07:00
x86_64 x86: remove migration makefile tweaks 2007-10-11 11:20:06 +02:00
xtensa xtensa process.c must #include <linux/fs.h> 2007-08-30 09:58:22 -07:00