From 43a06847b9d277e9f2c3bf8052b44b74e17526c7 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Tue, 14 Jan 2014 17:56:38 -0800 Subject: MIPS: fix blast_icache32 on loongson2 Commit 14bd8c082016 ("MIPS: Loongson: Get rid of Loongson 2 #ifdefery all over arch/mips") failed to add Loongson2 specific blast_icache32 functions. Fix that. The patch fixes the following crash seen with 3.13-rc1: Reserved instruction in kernel code[#1]: [...] Call Trace: blast_icache32_page+0x8/0xb0 r4k_flush_cache_page+0x19c/0x200 do_wp_page.isra.97+0x47c/0xe08 handle_mm_fault+0x938/0x1118 __do_page_fault+0x140/0x540 resume_userspace_check+0x0/0x10 Code: 00200825 64834000 00200825 bc900020 bc900040 bc900060 bc900080 bc9000a0 Signed-off-by: Aaro Koskinen Reviewed-by: Aurelien Jarno Acked-by: John Crispin Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/mips/mm/c-r4k.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/mips/mm/c-r4k.c') diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 73f02da61baf..49e572d879e1 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -237,6 +237,8 @@ static void r4k_blast_icache_page_setup(void) r4k_blast_icache_page = (void *)cache_noop; else if (ic_lsize == 16) r4k_blast_icache_page = blast_icache16_page; + else if (ic_lsize == 32 && current_cpu_type() == CPU_LOONGSON2) + r4k_blast_icache_page = loongson2_blast_icache32_page; else if (ic_lsize == 32) r4k_blast_icache_page = blast_icache32_page; else if (ic_lsize == 64) @@ -261,6 +263,9 @@ static void r4k_blast_icache_page_indexed_setup(void) else if (TX49XX_ICACHE_INDEX_INV_WAR) r4k_blast_icache_page_indexed = tx49_blast_icache32_page_indexed; + else if (current_cpu_type() == CPU_LOONGSON2) + r4k_blast_icache_page_indexed = + loongson2_blast_icache32_page_indexed; else r4k_blast_icache_page_indexed = blast_icache32_page_indexed; @@ -284,6 +289,8 @@ static void r4k_blast_icache_setup(void) r4k_blast_icache = blast_r4600_v1_icache32; else if (TX49XX_ICACHE_INDEX_INV_WAR) r4k_blast_icache = tx49_blast_icache32; + else if (current_cpu_type() == CPU_LOONGSON2) + r4k_blast_icache = loongson2_blast_icache32; else r4k_blast_icache = blast_icache32; } else if (ic_lsize == 64) -- cgit v1.2.3