MIPS: Lantiq: Fix external interrupt sources
authorJohn Crispin <blogic@openwrt.org>
Mon, 18 Jul 2011 16:08:40 +0000 (18:08 +0200)
committerRalf Baechle <ralf@linux-mips.org>
Wed, 21 Sep 2011 15:53:12 +0000 (17:53 +0200)
The irq base offset needs to be ignored when matching irqs to external
interrupt pins. Taking the offset into account resulted in the EIU not
being brought up properly.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2616/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/lantiq/irq.c

index fc89795cafdb6ad1fecb5274b76f74bc8fd85121..f9737bb3c5ab7442b055a6d0d7aa0e7529b37b6d 100644 (file)
@@ -123,11 +123,10 @@ void ltq_enable_irq(struct irq_data *d)
 static unsigned int ltq_startup_eiu_irq(struct irq_data *d)
 {
        int i;
-       int irq_nr = d->irq - INT_NUM_IRQ0;
 
        ltq_enable_irq(d);
        for (i = 0; i < MAX_EIU; i++) {
-               if (irq_nr == ltq_eiu_irq[i]) {
+               if (d->irq == ltq_eiu_irq[i]) {
                        /* low level - we should really handle set_type */
                        ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_C) |
                                (0x6 << (i * 4)), LTQ_EIU_EXIN_C);
@@ -147,11 +146,10 @@ static unsigned int ltq_startup_eiu_irq(struct irq_data *d)
 static void ltq_shutdown_eiu_irq(struct irq_data *d)
 {
        int i;
-       int irq_nr = d->irq - INT_NUM_IRQ0;
 
        ltq_disable_irq(d);
        for (i = 0; i < MAX_EIU; i++) {
-               if (irq_nr == ltq_eiu_irq[i]) {
+               if (d->irq == ltq_eiu_irq[i]) {
                        /* disable */
                        ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_INEN) & ~(1 << i),
                                LTQ_EIU_EXIN_INEN);