| From | Sasha Levin <> | Subject | [PATCH 5.2 033/135] riscv: Make __fstate_clean() work correctly. | Date | Thu, 22 Aug 2019 13:06:29 -0400 |
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From: Vincent Chen <vincent.chen@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 <stable@vger.kernel.org> Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> [paul.walmsley@sifive.com: expanded "Fixes" commit ID] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Signed-off-by: Greg Kroah-Hartman <gregkh@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
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