Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/mips/include/asm/futex.h b/arch/mips/include/asm/futex.h
index a9e61ea..b83b039 100644
--- a/arch/mips/include/asm/futex.h
+++ b/arch/mips/include/asm/futex.h
@@ -24,9 +24,10 @@
__asm__ __volatile__( \
" .set push \n" \
" .set noat \n" \
+ " .set push \n" \
" .set arch=r4000 \n" \
"1: ll %1, %4 # __futex_atomic_op \n" \
- " .set mips0 \n" \
+ " .set pop \n" \
" " insn " \n" \
" .set arch=r4000 \n" \
"2: sc $1, %2 \n" \
@@ -35,7 +36,6 @@
"3: \n" \
" .insn \n" \
" .set pop \n" \
- " .set mips0 \n" \
" .section .fixup,\"ax\" \n" \
"4: li %0, %6 \n" \
" j 3b \n" \
@@ -50,12 +50,14 @@
"i" (-EFAULT) \
: "memory"); \
} else if (cpu_has_llsc) { \
+ loongson_llsc_mb(); \
__asm__ __volatile__( \
" .set push \n" \
" .set noat \n" \
+ " .set push \n" \
" .set "MIPS_ISA_ARCH_LEVEL" \n" \
"1: "user_ll("%1", "%4")" # __futex_atomic_op\n" \
- " .set mips0 \n" \
+ " .set pop \n" \
" " insn " \n" \
" .set "MIPS_ISA_ARCH_LEVEL" \n" \
"2: "user_sc("$1", "%2")" \n" \
@@ -64,7 +66,6 @@
"3: \n" \
" .insn \n" \
" .set pop \n" \
- " .set mips0 \n" \
" .section .fixup,\"ax\" \n" \
"4: li %0, %6 \n" \
" j 3b \n" \
@@ -129,7 +130,7 @@
int ret = 0;
u32 val;
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
if (cpu_has_llsc && R10000_LLSC_WAR) {
@@ -137,10 +138,11 @@
"# futex_atomic_cmpxchg_inatomic \n"
" .set push \n"
" .set noat \n"
+ " .set push \n"
" .set arch=r4000 \n"
"1: ll %1, %3 \n"
" bne %1, %z4, 3f \n"
- " .set mips0 \n"
+ " .set pop \n"
" move $1, %z5 \n"
" .set arch=r4000 \n"
"2: sc $1, %2 \n"
@@ -162,14 +164,16 @@
"i" (-EFAULT)
: "memory");
} else if (cpu_has_llsc) {
+ loongson_llsc_mb();
__asm__ __volatile__(
"# futex_atomic_cmpxchg_inatomic \n"
" .set push \n"
" .set noat \n"
+ " .set push \n"
" .set "MIPS_ISA_ARCH_LEVEL" \n"
"1: "user_ll("%1", "%3")" \n"
" bne %1, %z4, 3f \n"
- " .set mips0 \n"
+ " .set pop \n"
" move $1, %z5 \n"
" .set "MIPS_ISA_ARCH_LEVEL" \n"
"2: "user_sc("$1", "%2")" \n"
@@ -190,6 +194,7 @@
: GCC_OFF_SMALL_ASM() (*uaddr), "Jr" (oldval), "Jr" (newval),
"i" (-EFAULT)
: "memory");
+ loongson_llsc_mb();
} else
return -ENOSYS;