MIPS: Malta: hang on halt

When the system is halted it makes little sense to reset it. Instead,
hang by executing an infinite loop.

[[e-mail]: Remove printk from mips_machine_halt() - this is not
the place to communicate with the user.]

Suggested-by: Maciej W. Rozycki <[e-mail]>
Signed-off-by: Paul Burton <[e-mail]>
Cc: [e-mail]
Patchwork: https://patchwork.linux-mips.org/patch/6906/
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/mti-malta/malta-reset.c

···
 
 static void mips_machine_halt(void)
 {
-	unsigned int __iomem *softres_reg =
-		ioremap(SOFTRES_REG, sizeof(unsigned int));
+	while (true);
+}
 
-	__raw_writel(GORESET, softres_reg);
+static void mips_machine_power_off(void)
+{
+	mips_machine_restart(NULL);
 }
 
 static int __init mips_reboot_setup(void)
 {
 	_machine_restart = mips_machine_restart;
 	_machine_halt = mips_machine_halt;
-	pm_power_off = mips_machine_halt;
+	pm_power_off = mips_machine_power_off;
 
 	return 0;
 }