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| author | Felix Fietkau <nbd@nbd.name> | 2018-07-20 14:58:22 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-26 09:36:31 +0300 |
| commit | 70ea6147c8ff2d46db295ad80700f97f09d731d0 (patch) | |
| tree | a45bda1927848910259b4f9cb029a4487c2e2483 | |
| parent | ddf00feadd40a5901e9e491b6fc953c47d794e66 (diff) | |
| download | linux-70ea6147c8ff2d46db295ad80700f97f09d731d0.tar.xz | |
MIPS: ath79: fix system restart
[ Upstream commit f8a7bfe1cb2c1ebfa07775c9c8ac0ad3ba8e5ff5 ]
This patch disables irq on reboot to fix hang issues that were observed
due to pending interrupts.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19913/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/mips/ath79/setup.c | 1 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-ath79/ath79.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c index f206dafbb0a3..26a058d58d37 100644 --- a/arch/mips/ath79/setup.c +++ b/arch/mips/ath79/setup.c @@ -40,6 +40,7 @@ static char ath79_sys_type[ATH79_SYS_TYPE_LEN]; static void ath79_restart(char *command) { + local_irq_disable(); ath79_device_reset_set(AR71XX_RESET_FULL_CHIP); for (;;) if (cpu_wait) diff --git a/arch/mips/include/asm/mach-ath79/ath79.h b/arch/mips/include/asm/mach-ath79/ath79.h index 441faa92c3cd..6e6c0fead776 100644 --- a/arch/mips/include/asm/mach-ath79/ath79.h +++ b/arch/mips/include/asm/mach-ath79/ath79.h @@ -134,6 +134,7 @@ static inline u32 ath79_pll_rr(unsigned reg) static inline void ath79_reset_wr(unsigned reg, u32 val) { __raw_writel(val, ath79_reset_base + reg); + (void) __raw_readl(ath79_reset_base + reg); /* flush */ } static inline u32 ath79_reset_rr(unsigned reg) |