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Russell King 38d122a96c ARM: riscpc: fix DMA 
[ Upstream commit ffd9a1ba9fdb7f2bd1d1ad9b9243d34e96756ba2 ]

DMA got broken a while back in two different ways:
1) a change in the behaviour of disable_irq() to wait for the interrupt
   to finish executing causes us to deadlock at the end of DMA.
2) a change to avoid modifying the scatterlist left the first transfer
   uninitialised.

DMA is only used with expansion cards, so has gone unnoticed.

Fixes: fa4e998999 ("[ARM] dma: RiscPC: don't modify DMA SG entries")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-08-06 18:28:24 +02:00
..
alpha alpha: Fix Eiger NR_IRQS to 128 2019-02-20 10:13:22 +01:00
arc ARC: hide unused function unw_hdr_alloc 2019-07-21 09:07:14 +02:00
arm ARM: riscpc: fix DMA 2019-08-06 18:28:24 +02:00
arm64 crypto: arm64/sha2-ce - correct digest for empty data in finup 2019-08-04 09:34:49 +02:00
avr32 avr32: off by one in at32_init_pio() 2016-10-07 15:23:45 +02:00
blackfin pinctrl: adi2: Fix Kconfig build problem 2017-12-20 10:05:00 +01:00
c6x c6x/ptrace: Remove useless PTRACE_SETREGSET implementation 2017-03-31 09:49:53 +02:00
cris mm: replace get_user_pages() write/force parameters with gup_flags 2018-12-17 21:55:16 +01:00
frv futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
h8300 h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux- 2019-04-27 09:33:48 +02:00
hexagon hexagon: modify ffs() and fls() to return int 2018-10-10 08:52:12 +02:00
ia64 bug.h: work around GCC PR82365 in BUG() 2019-07-10 09:56:42 +02:00
m32r m32r: fix __get_user() 2016-09-24 10:07:43 +02:00
m68k bug.h: work around GCC PR82365 in BUG() 2019-07-10 09:56:42 +02:00
metag metag/uaccess: Check access_ok in strncpy_from_user 2017-05-25 14:30:16 +02:00
microblaze microblaze: Fix simpleImage format generation 2018-08-06 16:24:39 +02:00
mips MIPS: fix build on non-linux hosts 2019-08-04 09:34:37 +02:00
mn10300 mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy 2018-02-16 20:09:47 +01:00
nios2 nios2: reserve boot memory for device tree 2017-04-12 12:38:34 +02:00
openrisc kthread: fix boot hang (regression) on MIPS/OpenRISC 2018-09-19 22:48:55 +02:00
parisc parisc: Fix kernel panic due invalid values in IAOQ0 or IAOQ1 2019-08-04 09:34:52 +02:00
powerpc powerpc/tm: Fix oops on sigreturn on systems without TM 2019-08-04 09:35:00 +02:00
s390 s390: fix stfle zero padding 2019-07-21 09:07:15 +02:00
score score: fix copy_from_user() and friends 2016-09-24 10:07:44 +02:00
sh sh: prevent warnings when using iounmap 2019-08-04 09:34:59 +02:00
sparc bug.h: work around GCC PR82365 in BUG() 2019-07-10 09:56:42 +02:00
tile futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
um um: Silence lockdep complaint about mmap_sem 2019-08-04 09:34:58 +02:00
unicore32 pwm: Changes for v4.4-rc1 2015-11-11 09:16:10 -08:00
x86 x86/speculation/mds: Apply more accurate check on hypervisor platform 2019-08-04 09:35:00 +02:00
xtensa xtensa: fix return_address 2019-04-27 09:33:56 +02:00
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