ARM/pxa: Prepare balloon3_irq_handler for irq argument removal

The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

While at it fix the pointless lookup of irq_data with the proper
methods to retrieve the same information from the irq descriptor.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Russell King <linux+kernel@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org

diff --git a/arch/arm/mach-pxa/balloon3.c b/arch/arm/mach-pxa/balloon3.c
index d897292..4b5eb67 100644 (file)
--- a/arch/arm/mach-pxa/balloon3.c
+++ b/arch/arm/mach-pxa/balloon3.c
@@ -496,18 +496,18 @@ static struct irq_chip balloon3_irq_chip = {
        .irq_unmask     = balloon3_unmask_irq,
 };
 
-static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
+static void balloon3_irq_handler(unsigned int __irq, struct irq_desc *desc)
 {
        unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
                                        balloon3_irq_enabled;
        do {
-               /* clear useless edge notification */
-               if (desc->irq_data.chip->irq_ack) {
-                       struct irq_data *d;
+               struct irq_data *d = irq_desc_get_irq_data(desc);
+               struct irq_chip *chip = irq_data_get_chip(d);
+               unsigned int irq;
 
-                       d = irq_get_irq_data(BALLOON3_AUX_NIRQ);
-                       desc->irq_data.chip->irq_ack(d);
-               }
+               /* clear useless edge notification */
+               if (chip->irq_ack)
+                       chip->irq_ack(d);
 
                while (pending) {
                        irq = BALLOON3_IRQ(0) + __ffs(pending);