From: Catalin Marinas Date: Sun, 3 Jul 2005 16:53:25 +0000 (+0100) Subject: [PATCH] ARM: 2784/1: Fix the block cache flush operation range X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0d670b413f042eccdffc45bafb9840244752707f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [PATCH] ARM: 2784/1: Fix the block cache flush operation range Patch from Catalin Marinas The range for the ARMv6 block cache operations is inclusive but the kernel doesn't re-calculate the end address, causing a page fault when used (this only happens with support for cache aliasing, otherwise the blk_flush_kern_dcache_page() is not called). This patch subtracts L1_CACHE_BYTES from the end address. Signed-off-by: Catalin Marinas Signed-off-by: Russell King --- diff --git a/arch/arm/mm/blockops.c b/arch/arm/mm/blockops.c index 806c6eeb1b0c..4f5ee2d08996 100644 --- a/arch/arm/mm/blockops.c +++ b/arch/arm/mm/blockops.c @@ -25,13 +25,14 @@ blk_flush_kern_dcache_page(void *kaddr) { asm( "add r1, r0, %0 \n\ + sub r1, r1, %1 \n\ 1: .word 0xec401f0e @ mcrr p15, 0, r0, r1, c14, 0 @ blocking \n\ mov r0, #0 \n\ mcr p15, 0, r0, c7, c5, 0 \n\ mcr p15, 0, r0, c7, c10, 4 \n\ mov pc, lr" : - : "I" (PAGE_SIZE)); + : "I" (PAGE_SIZE), "I" (L1_CACHE_BYTES)); } /*