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-rw-r--r--arch/riscv/lib/uaccess.S13
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/riscv/lib/uaccess.S b/arch/riscv/lib/uaccess.S
index 58fb2877c865..0173ea296baa 100644
--- a/arch/riscv/lib/uaccess.S
+++ b/arch/riscv/lib/uaccess.S
@@ -84,7 +84,7 @@ ENTRY(__clear_user)
bgeu t0, t1, 2f
bltu a0, t0, 4f
1:
- fixup REG_S, zero, (a0), 10f
+ fixup REG_S, zero, (a0), 11f
addi a0, a0, SZREG
bltu a0, t1, 1b
2:
@@ -96,12 +96,12 @@ ENTRY(__clear_user)
li a0, 0
ret
4: /* Edge case: unalignment */
- fixup sb, zero, (a0), 10f
+ fixup sb, zero, (a0), 11f
addi a0, a0, 1
bltu a0, t0, 4b
j 1b
5: /* Edge case: remainder */
- fixup sb, zero, (a0), 10f
+ fixup sb, zero, (a0), 11f
addi a0, a0, 1
bltu a0, a3, 5b
j 3b
@@ -109,9 +109,14 @@ ENDPROC(__clear_user)
.section .fixup,"ax"
.balign 4
+ /* Fixup code for __copy_user(10) and __clear_user(11) */
10:
/* Disable access to user memory */
csrs sstatus, t6
- sub a0, a3, a0
+ mv a0, a2
+ ret
+11:
+ csrs sstatus, t6
+ mv a0, a1
ret
.previous