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gpio: janzttl: use devm function

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This uses dem function for mem allocation

Signed-off-by: abdoulaye berthe <berthe.ab@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
abdoulaye berthe 2014-05-13 18:42:12 +02:00 committed by Linus Walleij
parent 0ed3398ed8
commit ae28193e01
1 changed files with 8 additions and 29 deletions
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37
drivers/gpio/gpio-janz-ttl.c
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@ -152,33 +152,21 @@ static int ttl_probe(struct platform_device *pdev)
pdata = dev_get_platdata(&pdev->dev);
if (!pdata) {
dev_err(dev, "no platform data\n");
ret = -ENXIO;
goto out_return;
return -ENXIO;
}
mod = kzalloc(sizeof(*mod), GFP_KERNEL);
if (!mod) {
ret = -ENOMEM;
goto out_return;
}
mod = devm_kzalloc(dev, sizeof(*mod), GFP_KERNEL);
if (!mod)
return -ENOMEM;
platform_set_drvdata(pdev, mod);
spin_lock_init(&mod->lock);
/* get access to the MODULbus registers for this module */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "MODULbus registers not found\n");
ret = -ENODEV;
goto out_free_mod;
}
mod->regs = ioremap(res->start, resource_size(res));
if (!mod->regs) {
dev_err(dev, "MODULbus registers not ioremap\n");
ret = -ENOMEM;
goto out_free_mod;
}
mod->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(mod->regs))
return PTR_ERR(mod->regs);
ttl_setup_device(mod);
@ -197,17 +185,10 @@ static int ttl_probe(struct platform_device *pdev)
ret = gpiochip_add(gpio);
if (ret) {
dev_err(dev, "unable to add GPIO chip\n");
goto out_iounmap_regs;
return ret;
}
return 0;
out_iounmap_regs:
iounmap(mod->regs);
out_free_mod:
kfree(mod);
out_return:
return ret;
}
static int ttl_remove(struct platform_device *pdev)
@ -222,8 +203,6 @@ static int ttl_remove(struct platform_device *pdev)
return ret;
}
iounmap(mod->regs);
kfree(mod);
return 0;
}