ARM: locomo: fix locomo irq handling

Accidentally booting Collie on Assabet reveals that the locomo driver
incorrectly overwrites gpio-sa1100's chip data for its parent interrupt,
leading to oops in sa1100_gpio_unmask() and sa1100_update_edge_regs()
when "gpio: sa1100: convert to use IO accessors" is applied.  Fix locomo
to use the handler data rather than chip data for its parent interrupt.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 0e97b4b..6c7b068 100644 (file)
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -140,7 +140,7 @@ static struct locomo_dev_info locomo_devices[] = {
 
 static void locomo_handler(struct irq_desc *desc)
 {
-       struct locomo *lchip = irq_desc_get_chip_data(desc);
+       struct locomo *lchip = irq_desc_get_handler_data(desc);
        int req, i;
 
        /* Acknowledge the parent IRQ */
@@ -200,8 +200,7 @@ static void locomo_setup_irq(struct locomo *lchip)
         * Install handler for IRQ_LOCOMO_HW.
         */
        irq_set_irq_type(lchip->irq, IRQ_TYPE_EDGE_FALLING);
-       irq_set_chip_data(lchip->irq, lchip);
-       irq_set_chained_handler(lchip->irq, locomo_handler);
+       irq_set_chained_handler_and_data(lchip->irq, locomo_handler, lchip);
 
        /* Install handlers for IRQ_LOCOMO_* */
        for ( ; irq <= lchip->irq_base + 3; irq++) {