ARM: OMAP1: ams-delta-fiq: Fix missing irq_ack

Non-serio path of Amstrad Delta FIQ deferred handler depended on
irq_ack() method provided by OMAP GPIO driver.  That method has been
removed by commit 693de831c6e5 ("gpio: omap: remove irq_ack method").
Remove useless code from the deferred handler and reimplement the
missing operation inside the base FIQ handler.

Should another dependency - irq_unmask() - be ever removed from the OMAP
GPIO driver, WARN once if missing.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap1/ams-delta-fiq-handler.S b/arch/arm/mach-omap1/ams-delta-fiq-handler.S
index 7c9fb7f..938d872 100644 (file)
--- a/arch/arm/mach-omap1/ams-delta-fiq-handler.S
+++ b/arch/arm/mach-omap1/ams-delta-fiq-handler.S
@@ -129,6 +129,8 @@ restart:
        orr r11, r11, r13                       @ mask all requested interrupts
        str r11, [r12, #OMAP1510_GPIO_INT_MASK]
 
+       str r13, [r12, #OMAP1510_GPIO_INT_STATUS] @ ack all requested interrupts
+
        ands r10, r13, #KEYBRD_CLK_MASK         @ extract keyboard status - set?
        beq hksw                                @ no - try next source
 
@@ -136,7 +138,6 @@ restart:
        @@@@@@@@@@@@@@@@@@@@@@
        @ Keyboard clock FIQ mode interrupt handler
        @ r10 now contains KEYBRD_CLK_MASK, use it
-       str r10, [r12, #OMAP1510_GPIO_INT_STATUS]       @ ack the interrupt
        bic r11, r11, r10                               @ unmask it
        str r11, [r12, #OMAP1510_GPIO_INT_MASK]
 

diff --git a/arch/arm/mach-omap1/ams-delta-fiq.c b/arch/arm/mach-omap1/ams-delta-fiq.c
index 5121213..dedaf71 100644 (file)
--- a/arch/arm/mach-omap1/ams-delta-fiq.c
+++ b/arch/arm/mach-omap1/ams-delta-fiq.c
@@ -72,9 +72,7 @@ static irqreturn_t deferred_fiq(int irq, void *dev_id)
                         * interrupts default to since commit 80ac93c27441
                         * requires interrupt already acked and unmasked.
                         */
-                       if (irq_chip->irq_ack)
-                               irq_chip->irq_ack(d);
-                       if (irq_chip->irq_unmask)
+                       if (!WARN_ON_ONCE(!irq_chip->irq_unmask))
                                irq_chip->irq_unmask(d);
                }
                for (; irq_counter[gpio] < fiq_count; irq_counter[gpio]++)