Fixes: e01402b115cc ("More AP / SP bits for the 34K, the Malta bits and things. Still wants")
Fixes: c65a5480ff29 ("[MIPS] Fix potential latency problem due to non-atomic cpu_wait.")
Cc: stable@xxxxxxxxxxxxxxx # 3.10+
Signed-off-by: Alexander Lobakin <alobakin@xxxxx>
---
arch/mips/include/asm/setup.h | 2 +-
arch/mips/kernel/traps.c | 22 +++++++++++-----------
2 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/mips/include/asm/setup.h b/arch/mips/include/asm/setup.h
index bb36a400203d..8c56b862fd9c 100644
--- a/arch/mips/include/asm/setup.h
+++ b/arch/mips/include/asm/setup.h
@@ -16,7 +16,7 @@ static inline void setup_8250_early_printk_port(unsigned long base,
unsigned int reg_shift, unsigned int timeout) {}
#endif
-extern void set_handler(unsigned long offset, void *addr, unsigned long len);
+void set_handler(unsigned long offset, const void *addr, unsigned long len);
extern void set_uncached_handler(unsigned long offset, void *addr, unsigned long len);
typedef void (*vi_handler_t)(void);
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index a486486b2355..246c6a6b0261 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -2091,19 +2091,19 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
* If no shadow set is selected then use the default handler
* that does normal register saving and standard interrupt exit
*/
- extern char except_vec_vi, except_vec_vi_lui;
- extern char except_vec_vi_ori, except_vec_vi_end;
- extern char rollback_except_vec_vi;
- char *vec_start = using_rollback_handler() ?
- &rollback_except_vec_vi : &except_vec_vi;
+ extern const u8 except_vec_vi[], except_vec_vi_lui[];
+ extern const u8 except_vec_vi_ori[], except_vec_vi_end[];
+ extern const u8 rollback_except_vec_vi[];
+ const u8 *vec_start = using_rollback_handler() ?
+ rollback_except_vec_vi : except_vec_vi;
#if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_BIG_ENDIAN)
- const int lui_offset = &except_vec_vi_lui - vec_start + 2;
- const int ori_offset = &except_vec_vi_ori - vec_start + 2;
+ const int lui_offset = except_vec_vi_lui - vec_start + 2;
+ const int ori_offset = except_vec_vi_ori - vec_start + 2;
#else
- const int lui_offset = &except_vec_vi_lui - vec_start;
- const int ori_offset = &except_vec_vi_ori - vec_start;
+ const int lui_offset = except_vec_vi_lui - vec_start;
+ const int ori_offset = except_vec_vi_ori - vec_start;
#endif
- const int handler_len = &except_vec_vi_end - vec_start;
+ const int handler_len = except_vec_vi_end - vec_start;
if (handler_len > VECTORSPACING) {
/*
@@ -2311,7 +2311,7 @@ void per_cpu_trap_init(bool is_boot_cpu)
}
/* Install CPU exception handler */
-void set_handler(unsigned long offset, void *addr, unsigned long size)
+void set_handler(unsigned long offset, const void *addr, unsigned long size)
{
#ifdef CONFIG_CPU_MICROMIPS
memcpy((void *)(ebase + offset), ((unsigned char *)addr - 1), size);
--
2.35.1
