[POWERPC] pasemi: Move cpus to hold loop before restart (32e2b55e) · Commits · 戴 / test

Use smp_send_stop() to move all cpus besides the one executing reboot into a hold loop, to keep them from being in powersavings mode at the time of reboot. Signed-off-by:

Olof Johansson <olof@lixom.net>

arch/powerpc/platforms/pasemi/setup.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,10 @@

		#include "pasemi.h"

		#if !defined(CONFIG_SMP)
		static void smp_send_stop(void) {}
		#endif

		/* SDC reset register, must be pre-mapped at reset time */
		static void __iomem *reset_reg;

		@@ -60,6 +64,9 @@ static int num_mce_regs;

		static void pas_restart(char *cmd)
		{
		/* Need to put others cpu in hold loop so they're not sleeping */
		smp_send_stop();
		udelay(10000);
		printk("Restarting...\n");
		while (1)
		out_le32(reset_reg, 0x6000000);

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