From: Vincent Chen <vincent.c...@sifive.com>
commit 69703eb9a8ae28a46cd5bce7d69ceeef6273a104 upstream.
Make the __fstate_clean() function correctly set the
state of sstatus.FS in pt_regs to SR_FS_CLEAN.
Fixes: 7db91e57a0acd ("RISC-V: Task implementation")
Cc: linux-stable <sta...@vger.kernel.org>
Signed-off-by: Vincent Chen <vincent.c...@sifive.com>
Reviewed-by: Anup Patel <a...@brainfault.org>
Reviewed-by: Christoph Hellwig <h...@lst.de>
[paul.walms...@sifive.com: expanded "Fixes" commit ID]
Signed-off-by: Paul Walmsley <paul.walms...@sifive.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
arch/riscv/include/asm/switch_to.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/include/asm/switch_to.h
b/arch/riscv/include/asm/switch_to.h
index 949d9cd91dec4..f0227bdce0f06 100644
--- a/arch/riscv/include/asm/switch_to.h
+++ b/arch/riscv/include/asm/switch_to.h
@@ -16,7 +16,7 @@ extern void __fstate_restore(struct task_struct
*restore_from);
static inline void __fstate_clean(struct pt_regs *regs)
{
- regs->sstatus |= (regs->sstatus & ~(SR_FS)) | SR_FS_CLEAN;
+ regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_CLEAN;
}
static inline void fstate_off(struct task_struct *task,
--
2.20.1
