i2c: sh_mobile: optimize irq entry
We can simply pass the pointer to the private structure to the irq
routine instead of passing the platform device and looking up its
driver_data.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index c7f36c1..a758ccc 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -466,8 +466,7 @@
static irqreturn_t sh_mobile_i2c_isr(int irq, void *dev_id)
{
- struct platform_device *dev = dev_id;
- struct sh_mobile_i2c_data *pd = platform_get_drvdata(dev);
+ struct sh_mobile_i2c_data *pd = dev_id;
unsigned char sr;
int wakeup = 0;
@@ -804,7 +803,7 @@
}
}
-static int sh_mobile_i2c_hook_irqs(struct platform_device *dev)
+static int sh_mobile_i2c_hook_irqs(struct platform_device *dev, struct sh_mobile_i2c_data *pd)
{
struct resource *res;
resource_size_t n;
@@ -813,7 +812,7 @@
while ((res = platform_get_resource(dev, IORESOURCE_IRQ, k))) {
for (n = res->start; n <= res->end; n++) {
ret = devm_request_irq(&dev->dev, n, sh_mobile_i2c_isr,
- 0, dev_name(&dev->dev), dev);
+ 0, dev_name(&dev->dev), pd);
if (ret) {
dev_err(&dev->dev, "cannot request IRQ %pa\n", &n);
return ret;
@@ -844,7 +843,7 @@
return PTR_ERR(pd->clk);
}
- ret = sh_mobile_i2c_hook_irqs(dev);
+ ret = sh_mobile_i2c_hook_irqs(dev, pd);
if (ret)
return ret;