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authorLaxman Dewangan <ldewangan@nvidia.com>2013-01-06 18:31:20 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2013-01-17 00:27:57 -0800
commit00eb81e56a38ffb7839e0e6262e26c20c617d2ab (patch)
tree8a37bdc1e074b03e979623c3ba3f75ac65a929d9 /drivers/input/keyboard/tegra-kbc.c
parent1c407a1b24debecccc42e5a2ae167f058dbb6fba (diff)
downloadblackbird-op-linux-00eb81e56a38ffb7839e0e6262e26c20c617d2ab.tar.gz
blackbird-op-linux-00eb81e56a38ffb7839e0e6262e26c20c617d2ab.zip
Input: tegra-kbc - use devm_* for resource allocation
Use devm_* for memory, clock, irq, input device allocation. This reduces code for freeing these resources. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/keyboard/tegra-kbc.c')
-rw-r--r--drivers/input/keyboard/tegra-kbc.c105
1 files changed, 27 insertions, 78 deletions
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
index f1d3ba0dafb2..f79993679070 100644
--- a/drivers/input/keyboard/tegra-kbc.c
+++ b/drivers/input/keyboard/tegra-kbc.c
@@ -618,7 +618,7 @@ static struct tegra_kbc_platform_data *tegra_kbc_dt_parse_pdata(
if (!np)
return NULL;
- pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return NULL;
@@ -700,33 +700,36 @@ static int tegra_kbc_probe(struct platform_device *pdev)
if (!pdata)
pdata = tegra_kbc_dt_parse_pdata(pdev);
- if (!pdata)
+ if (!pdata) {
+ dev_err(&pdev->dev, "Platform data missing\n");
return -EINVAL;
-
- if (!tegra_kbc_check_pin_cfg(pdata, &pdev->dev, &num_rows)) {
- err = -EINVAL;
- goto err_free_pdata;
}
+ if (!tegra_kbc_check_pin_cfg(pdata, &pdev->dev, &num_rows))
+ return -EINVAL;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
- err = -ENXIO;
- goto err_free_pdata;
+ return -ENXIO;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "failed to get keyboard IRQ\n");
- err = -ENXIO;
- goto err_free_pdata;
+ return -ENXIO;
}
- kbc = kzalloc(sizeof(*kbc), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!kbc || !input_dev) {
- err = -ENOMEM;
- goto err_free_mem;
+ kbc = devm_kzalloc(&pdev->dev, sizeof(*kbc), GFP_KERNEL);
+ if (!kbc) {
+ dev_err(&pdev->dev, "failed to alloc memory for kbc\n");
+ return -ENOMEM;
+ }
+
+ input_dev = devm_input_allocate_device(&pdev->dev);
+ if (!input_dev) {
+ dev_err(&pdev->dev, "failed to allocate input device\n");
+ return -ENOMEM;
}
kbc->pdata = pdata;
@@ -735,25 +738,16 @@ static int tegra_kbc_probe(struct platform_device *pdev)
spin_lock_init(&kbc->lock);
setup_timer(&kbc->timer, tegra_kbc_keypress_timer, (unsigned long)kbc);
- res = request_mem_region(res->start, resource_size(res), pdev->name);
- if (!res) {
- dev_err(&pdev->dev, "failed to request I/O memory\n");
- err = -EBUSY;
- goto err_free_mem;
- }
-
- kbc->mmio = ioremap(res->start, resource_size(res));
+ kbc->mmio = devm_request_and_ioremap(&pdev->dev, res);
if (!kbc->mmio) {
- dev_err(&pdev->dev, "failed to remap I/O memory\n");
- err = -ENXIO;
- goto err_free_mem_region;
+ dev_err(&pdev->dev, "Cannot request memregion/iomap address\n");
+ return -EBUSY;
}
- kbc->clk = clk_get(&pdev->dev, NULL);
+ kbc->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(kbc->clk)) {
dev_err(&pdev->dev, "failed to get keyboard clock\n");
- err = PTR_ERR(kbc->clk);
- goto err_iounmap;
+ return PTR_ERR(kbc->clk);
}
/*
@@ -780,7 +774,7 @@ static int tegra_kbc_probe(struct platform_device *pdev)
err = tegra_kbd_setup_keymap(kbc);
if (err) {
dev_err(&pdev->dev, "failed to setup keymap\n");
- goto err_put_clk;
+ return err;
}
__set_bit(EV_REP, input_dev->evbit);
@@ -788,11 +782,11 @@ static int tegra_kbc_probe(struct platform_device *pdev)
input_set_drvdata(input_dev, kbc);
- err = request_irq(kbc->irq, tegra_kbc_isr,
+ err = devm_request_irq(&pdev->dev, kbc->irq, tegra_kbc_isr,
IRQF_NO_SUSPEND | IRQF_TRIGGER_HIGH, pdev->name, kbc);
if (err) {
dev_err(&pdev->dev, "failed to request keyboard IRQ\n");
- goto err_put_clk;
+ return err;
}
disable_irq(kbc->irq);
@@ -800,57 +794,13 @@ static int tegra_kbc_probe(struct platform_device *pdev)
err = input_register_device(kbc->idev);
if (err) {
dev_err(&pdev->dev, "failed to register input device\n");
- goto err_free_irq;
+ return err;
}
platform_set_drvdata(pdev, kbc);
device_init_wakeup(&pdev->dev, pdata->wakeup);
return 0;
-
-err_free_irq:
- free_irq(kbc->irq, pdev);
-err_put_clk:
- clk_put(kbc->clk);
-err_iounmap:
- iounmap(kbc->mmio);
-err_free_mem_region:
- release_mem_region(res->start, resource_size(res));
-err_free_mem:
- input_free_device(input_dev);
- kfree(kbc);
-err_free_pdata:
- if (!pdev->dev.platform_data)
- kfree(pdata);
-
- return err;
-}
-
-static int tegra_kbc_remove(struct platform_device *pdev)
-{
- struct tegra_kbc *kbc = platform_get_drvdata(pdev);
- struct resource *res;
-
- platform_set_drvdata(pdev, NULL);
-
- free_irq(kbc->irq, pdev);
- clk_put(kbc->clk);
-
- input_unregister_device(kbc->idev);
- iounmap(kbc->mmio);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
-
- /*
- * If we do not have platform data attached to the device we
- * allocated it ourselves and thus need to free it.
- */
- if (!pdev->dev.platform_data)
- kfree(kbc->pdata);
-
- kfree(kbc);
-
- return 0;
}
#ifdef CONFIG_PM_SLEEP
@@ -954,7 +904,6 @@ MODULE_DEVICE_TABLE(of, tegra_kbc_of_match);
static struct platform_driver tegra_kbc_driver = {
.probe = tegra_kbc_probe,
- .remove = tegra_kbc_remove,
.driver = {
.name = "tegra-kbc",
.owner = THIS_MODULE,
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