From 68c77d8a1e1ad6cfe228390702f3e4eb2bf8e17a Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Mon, 25 Aug 2014 19:35:53 +0200 Subject: [PATCH] MIPS: COP2: CPP macro safety fixes. - Don't pass things to macros that couldn't be dereferences if that macro was actually a function. - Don't use empty function-like macros. Signed-off-by: Ralf Baechle --- arch/mips/include/asm/cop2.h | 18 +++++++++--------- arch/mips/include/asm/switch_to.h | 4 ++-- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/arch/mips/include/asm/cop2.h b/arch/mips/include/asm/cop2.h index d0352983b94d..51f80bd36fcc 100644 --- a/arch/mips/include/asm/cop2.h +++ b/arch/mips/include/asm/cop2.h @@ -16,8 +16,8 @@ extern void octeon_cop2_save(struct octeon_cop2_state *); extern void octeon_cop2_restore(struct octeon_cop2_state *); -#define cop2_save(r) octeon_cop2_save(r) -#define cop2_restore(r) octeon_cop2_restore(r) +#define cop2_save(r) octeon_cop2_save(&(r)->thread.cp2) +#define cop2_restore(r) octeon_cop2_restore(&(r)->thread.cp2) #define cop2_present 1 #define cop2_lazy_restore 1 @@ -26,26 +26,26 @@ extern void octeon_cop2_restore(struct octeon_cop2_state *); extern void nlm_cop2_save(struct nlm_cop2_state *); extern void nlm_cop2_restore(struct nlm_cop2_state *); -#define cop2_save(r) nlm_cop2_save(r) -#define cop2_restore(r) nlm_cop2_restore(r) + +#define cop2_save(r) nlm_cop2_save(&(r)->thread.cp2) +#define cop2_restore(r) nlm_cop2_restore(&(r)->thread.cp2) #define cop2_present 1 #define cop2_lazy_restore 0 #elif defined(CONFIG_CPU_LOONGSON3) -#define cop2_save(r) -#define cop2_restore(r) - #define cop2_present 1 #define cop2_lazy_restore 1 +#define cop2_save(r) do { (r); } while (0) +#define cop2_restore(r) do { (r); } while (0) #else #define cop2_present 0 #define cop2_lazy_restore 0 -#define cop2_save(r) -#define cop2_restore(r) +#define cop2_save(r) do { (r); } while (0) +#define cop2_restore(r) do { (r); } while (0) #endif enum cu2_ops { diff --git a/arch/mips/include/asm/switch_to.h b/arch/mips/include/asm/switch_to.h index 495c1041a2cc..b928b6f898cd 100644 --- a/arch/mips/include/asm/switch_to.h +++ b/arch/mips/include/asm/switch_to.h @@ -92,7 +92,7 @@ do { \ KSTK_STATUS(prev) &= ~ST0_CU2; \ __c0_stat = read_c0_status(); \ write_c0_status(__c0_stat | ST0_CU2); \ - cop2_save(&prev->thread.cp2); \ + cop2_save(prev); \ write_c0_status(__c0_stat & ~ST0_CU2); \ } \ __clear_software_ll_bit(); \ @@ -111,7 +111,7 @@ do { \ (KSTK_STATUS(current) & ST0_CU2)) { \ __c0_stat = read_c0_status(); \ write_c0_status(__c0_stat | ST0_CU2); \ - cop2_restore(¤t->thread.cp2); \ + cop2_restore(current); \ write_c0_status(__c0_stat & ~ST0_CU2); \ } \ if (cpu_has_dsp) \ -- GitLab