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MIPS: ath79: fix system restart

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[ 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>
This commit is contained in:
Felix Fietkau 2018-07-20 13:58:22 +02:00 committed by Greg Kroah-Hartman
parent e1cfd4533f
commit 9b43283036
2 changed files with 2 additions and 0 deletions
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1
arch/mips/ath79/setup.c
View File

@ -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)

1
arch/mips/include/asm/mach-ath79/ath79.h
View File

@ -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)