From 4aa5ac4ef44dd8c986241c54298abd7910b78b3f Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Fri, 28 Aug 2009 21:37:20 +0000 Subject: [PATCH] sh: Only shout about fixing up unexpected unaligned accesses Some unaligned accesses are completely expected. For example, the trapped_io code uses the unaligned access fixup code path so there's no need to warn about having to fixup the unaligned access. Signed-off-by: Matt Fleming Signed-off-by: Paul Mundt --- arch/sh/include/asm/system_32.h | 2 +- arch/sh/kernel/io_trapped.c | 3 ++- arch/sh/kernel/traps_32.c | 9 +++++---- 3 files changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/sh/include/asm/system_32.h b/arch/sh/include/asm/system_32.h index 81e0d668eefd..d3ab269386bb 100644 --- a/arch/sh/include/asm/system_32.h +++ b/arch/sh/include/asm/system_32.h @@ -199,7 +199,7 @@ do { \ #endif int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs, - struct mem_access *ma); + struct mem_access *ma, int); asmlinkage void do_address_error(struct pt_regs *regs, unsigned long writeaccess, diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c index e27a19e1f46e..69be603aa2d7 100644 --- a/arch/sh/kernel/io_trapped.c +++ b/arch/sh/kernel/io_trapped.c @@ -284,7 +284,8 @@ int handle_trapped_io(struct pt_regs *regs, unsigned long address) return 0; } - tmp = handle_unaligned_access(instruction, regs, &trapped_io_access); + tmp = handle_unaligned_access(instruction, regs, + &trapped_io_access, 1); set_fs(oldfs); return tmp == 0; } diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c index c581dc31d92a..583ace55b0dc 100644 --- a/arch/sh/kernel/traps_32.c +++ b/arch/sh/kernel/traps_32.c @@ -449,7 +449,7 @@ static inline int handle_delayslot(struct pt_regs *regs, #define SH_PC_12BIT_OFFSET(instr) ((((signed short)(instr<<4))>>3) + 4) int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs, - struct mem_access *ma) + struct mem_access *ma, int expected) { u_int rm; int ret, index; @@ -458,7 +458,7 @@ int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs, rm = regs->regs[index]; /* shout about fixups */ - if (printk_ratelimit()) + if (!expected && printk_ratelimit()) printk(KERN_NOTICE "Fixing up unaligned %s access " "in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n", user_mode(regs) ? "userspace" : "kernel", @@ -657,7 +657,7 @@ fixup: set_fs(USER_DS); tmp = handle_unaligned_access(instruction, regs, - &user_mem_access); + &user_mem_access, 0); set_fs(oldfs); if (tmp==0) @@ -694,7 +694,8 @@ uspace_segv: die("insn faulting in do_address_error", regs, 0); } - handle_unaligned_access(instruction, regs, &user_mem_access); + handle_unaligned_access(instruction, regs, + &user_mem_access, 0); set_fs(oldfs); } } -- 2.34.1