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i2c: sh_mobile: devm conversion, irq setup

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This is what devm was made for. No rollback mechanism needed, remove the
hook parameter from the irq setup function and simplify it. While we are
here change some variables to proper types.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2014-05-02 21:15:12 +02:00 committed by Wolfram Sang
parent 4fd31c2eb7
commit 7fe8a99933
1 changed files with 15 additions and 41 deletions
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56
drivers/i2c/busses/i2c-sh_mobile.c
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@ -611,42 +611,25 @@ static struct i2c_algorithm sh_mobile_i2c_algorithm = {
.master_xfer = sh_mobile_i2c_xfer,
};
static int sh_mobile_i2c_hook_irqs(struct platform_device *dev, int hook)
static int sh_mobile_i2c_hook_irqs(struct platform_device *dev)
{
struct resource *res;
int ret = -ENXIO;
int n, k = 0;
resource_size_t n;
int k = 0, ret;
while ((res = platform_get_resource(dev, IORESOURCE_IRQ, k))) {
for (n = res->start; hook && n <= res->end; n++) {
if (request_irq(n, sh_mobile_i2c_isr, 0,
dev_name(&dev->dev), dev)) {
for (n--; n >= res->start; n--)
free_irq(n, dev);
goto rollback;
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);
if (ret) {
dev_err(&dev->dev, "cannot request IRQ %pa\n", &n);
return ret;
}
}
k++;
}
if (hook)
return k > 0 ? 0 : -ENOENT;
ret = 0;
rollback:
k--;
while (k >= 0) {
res = platform_get_resource(dev, IORESOURCE_IRQ, k);
for (n = res->start; n <= res->end; n++)
free_irq(n, dev);
k--;
}
return ret;
return k > 0 ? 0 : -ENOENT;
}
static int sh_mobile_i2c_probe(struct platform_device *dev)
@ -668,11 +651,9 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
return PTR_ERR(pd->clk);
}
ret = sh_mobile_i2c_hook_irqs(dev, 1);
if (ret) {
dev_err(&dev->dev, "cannot request IRQ\n");
ret = sh_mobile_i2c_hook_irqs(dev);
if (ret)
return ret;
}
pd->dev = &dev->dev;
platform_set_drvdata(dev, pd);
@ -680,10 +661,8 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
res = platform_get_resource(dev, IORESOURCE_MEM, 0);
pd->reg = devm_ioremap_resource(&dev->dev, res);
if (IS_ERR(pd->reg)) {
ret = PTR_ERR(pd->reg);
goto err_irq;
}
if (IS_ERR(pd->reg))
return PTR_ERR(pd->reg);
/* Use platform data bus speed or STANDARD_MODE */
ret = of_property_read_u32(dev->dev.of_node, "clock-frequency", &bus_speed);
@ -735,7 +714,7 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
ret = i2c_add_numbered_adapter(adap);
if (ret < 0) {
dev_err(&dev->dev, "cannot add numbered adapter\n");
goto err_irq;
return ret;
}
dev_info(&dev->dev,
@ -743,10 +722,6 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
adap->nr, pd->bus_speed, pd->iccl, pd->icch);
return 0;
err_irq:
sh_mobile_i2c_hook_irqs(dev, 0);
return ret;
}
static int sh_mobile_i2c_remove(struct platform_device *dev)
@ -754,7 +729,6 @@ static int sh_mobile_i2c_remove(struct platform_device *dev)
struct sh_mobile_i2c_data *pd = platform_get_drvdata(dev);
i2c_del_adapter(&pd->adap);
sh_mobile_i2c_hook_irqs(dev, 0);
pm_runtime_disable(&dev->dev);
return 0;
}