langwell_gpio: modify EOI handling following change of kernel irq subsystem

Latest kernel has many changes in IRQ subsystem and its interfaces, like
adding "irq_eoi" for struct irq_chip, this patch is a follow up change
for that.

Also remove the unnecessary cast for a "void *".

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Alek Du <alek.du@intel.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/gpio/langwell_gpio.c b/drivers/gpio/langwell_gpio.c
index d81cc74..54d70a4 100644 (file)
--- a/drivers/gpio/langwell_gpio.c
+++ b/drivers/gpio/langwell_gpio.c
@@ -187,7 +187,7 @@ MODULE_DEVICE_TABLE(pci, lnw_gpio_ids);
 
 static void lnw_irq_handler(unsigned irq, struct irq_desc *desc)
 {
-       struct lnw_gpio *lnw = (struct lnw_gpio *)get_irq_data(irq);
+       struct lnw_gpio *lnw = get_irq_data(irq);
        u32 base, gpio;
        void __iomem *gedr;
        u32 gedr_v;
@@ -206,7 +206,12 @@ static void lnw_irq_handler(unsigned irq, struct irq_desc *desc)
                /* clear the edge detect status bit */
                writel(gedr_v, gedr);
        }
-       desc->chip->eoi(irq);
+
+       if (desc->chip->irq_eoi)
+               desc->chip->irq_eoi(irq_get_irq_data(irq));
+       else
+               dev_warn(lnw->chip.dev, "missing EOI handler for irq %d\n", irq);
+
 }
 
 static int __devinit lnw_gpio_probe(struct pci_dev *pdev,