diff options
| author | Paul Cercueil <paul@crapouillou.net> | 2021-05-30 18:17:55 +0100 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-06-01 11:44:46 +0200 |
| commit | 1660710cf5d8d44ec351a5df57c35516f1fbf5e0 (patch) | |
| tree | 591624fadbf915c66cef78f5afc7d5c35ae4833c /arch/mips/Kconfig | |
| parent | c8ba52d1b7e317c54d461970e4bdeec10ea1d9c4 (diff) | |
| download | linux-stable-1660710cf5d8d44ec351a5df57c35516f1fbf5e0.tar.gz linux-stable-1660710cf5d8d44ec351a5df57c35516f1fbf5e0.tar.bz2 linux-stable-1660710cf5d8d44ec351a5df57c35516f1fbf5e0.zip | |
MIPS: mm: XBurst CPU requires sync after DMA
I am not sure why this is required, but if this is not enabled, reading
from a buffer in which data has been DMA'd may read incorrect values.
This used to happen for instance in mmc_app_send_scr()
(drivers/mmc/core/sd_ops.c), where data is DMA'd to a buffer then copied
by the CPU to a different location.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index baa4ea9a0f25..7badc40baa1f 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -112,6 +112,7 @@ config MACH_INGENIC select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_ZBOOT select DMA_NONCOHERENT + select ARCH_HAS_SYNC_DMA_FOR_CPU select IRQ_MIPS_CPU select PINCTRL select GPIOLIB |