riscv: fix minor typo in syscall.h comment

Some developers may be confused because RISC-V does not have
a register named r0. Also, orig_r0 is not available in pt_regs structure,
which is specific to riscv. So we had better fix this minor typo.

Signed-off-by: Austin Kim <austin.kim@lge.com>
Link: https://patch.msgid.link/aW3Z4zTBvGJpk7a7@adminpc-PowerEdge-R7525
Signed-off-by: Paul Walmsley <pjw@kernel.org>

diff --git a/arch/riscv/include/asm/syscall.h b/arch/riscv/include/asm/syscall.h
index 34313387f9774c43009ad0a24ed5b3520fadd34e..8067e666a4ca68c98d409fc86a2744a5d2c02799 100644 (file)
--- a/arch/riscv/include/asm/syscall.h
+++ b/arch/riscv/include/asm/syscall.h
@@ -20,7 +20,7 @@ extern void * const sys_call_table[];
 extern void * const compat_sys_call_table[];
 
 /*
- * Only the low 32 bits of orig_r0 are meaningful, so we return int.
+ * Only the low 32 bits of orig_a0 are meaningful, so we return int.
  * This importantly ignores the high bits on 64-bit, so comparisons
  * sign-extend the low 32 bits.
  */