diff options
Diffstat (limited to 'arch/mips/bmips/dma.c')
| -rw-r--r-- | arch/mips/bmips/dma.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/mips/bmips/dma.c b/arch/mips/bmips/dma.c index 3d13c77c125f..98d39585c80f 100644 --- a/arch/mips/bmips/dma.c +++ b/arch/mips/bmips/dma.c @@ -64,7 +64,9 @@ phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) return dma_addr; } -void arch_sync_dma_for_cpu_all(struct device *dev) +bool bmips_rac_flush_disable; + +void arch_sync_dma_for_cpu_all(void) { void __iomem *cbr = BMIPS_GET_CBR(); u32 cfg; @@ -74,6 +76,9 @@ void arch_sync_dma_for_cpu_all(struct device *dev) boot_cpu_type() != CPU_BMIPS4380) return; + if (unlikely(bmips_rac_flush_disable)) + return; + /* Flush stale data out of the readahead cache */ cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG); __raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG); |