ARCv2: intc: Use kflag if STATUS32.IE must be reset

kolerov · vineetgarc · commit bc0c7ece6191 · 2016-09-30T14:48:24.000-07:00
In the end of "arc_init_IRQ" STATUS32.IE flag is going to be affected by
"flag" instruction but "flag" never touches IE flag on ARCv2. So "kflag"
instruction must be used instead of "flag".

Signed-off-by: Yuriy Kolerov &lt;yuriy.kolerov@synopsys.com&gt;
Cc: stable@vger.kernel.org #4.2+
Signed-off-by: Vineet Gupta &lt;vgupta@synopsys.com&gt;
diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
@@ -74,7 +74,7 @@ void arc_init_IRQ(void)
 	tmp = read_aux_reg(0xa);
 	tmp |= STATUS_AD_MASK | (irq_prio << 1);
 	tmp &= ~STATUS_IE_MASK;
-	asm volatile("flag %0	\n"::"r"(tmp));
+	asm volatile("kflag %0	\n"::"r"(tmp));
 }
 
 static void arcv2_irq_mask(struct irq_data *data)

Original file line number	Diff line number	Diff line change
`@@ -74,7 +74,7 @@ void arc_init_IRQ(void)`
`74`	`74`	`tmp = read_aux_reg(0xa);`
`75`	`75`	`tmp \|= STATUS_AD_MASK \| (irq_prio << 1);`
`76`	`76`	`tmp &= ~STATUS_IE_MASK;`
`77`		`- asm volatile("flag %0 \n"::"r"(tmp));`
	`77`	`+ asm volatile("kflag %0 \n"::"r"(tmp));`
`78`	`78`	`}`
`79`	`79`
`80`	`80`	`static void arcv2_irq_mask(struct irq_data *data)`