diff options
Diffstat (limited to 'arch/mips/bmips/dma.c')
| -rw-r--r-- | arch/mips/bmips/dma.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/mips/bmips/dma.c b/arch/mips/bmips/dma.c index c535f9cb75ec..2bc9c0d4402f 100644 --- a/arch/mips/bmips/dma.c +++ b/arch/mips/bmips/dma.c @@ -1,12 +1,15 @@ // SPDX-License-Identifier: GPL-2.0+ #include <linux/types.h> +#include <linux/dma-map-ops.h> #include <asm/bmips.h> #include <asm/io.h> +bool bmips_rac_flush_disable; + void arch_sync_dma_for_cpu_all(void) { - void __iomem *cbr = BMIPS_GET_CBR(); + void __iomem *cbr = bmips_cbr_addr; u32 cfg; if (boot_cpu_type() != CPU_BMIPS3300 && @@ -14,6 +17,9 @@ void arch_sync_dma_for_cpu_all(void) 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); |