diff options
author | Chris Packham <chris.packham@alliedtelesis.co.nz> | 2017-06-26 12:44:33 +1200 |
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committer | Wolfram Sang <wsa@the-dreams.de> | 2017-06-27 21:50:21 +0200 |
commit | fa70ca7c287ee63b790fbb3de624a0c80a6e2be2 (patch) | |
tree | 29cbe94be74e4cf94e9d24a890bbe4d77e92ae32 /drivers/i2c | |
parent | 0e8ce93bdceb6d36a3c1db2227d3f51168fb796c (diff) | |
download | linux-fa70ca7c287ee63b790fbb3de624a0c80a6e2be2.tar.bz2 |
i2c: pca-platform: use device managed allocations
Switch to using the devm_ APIs and remove the now unnecessary error
handling and most of the device removal code.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
[wsa: adapted error handling I added in previous patch]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r-- | drivers/i2c/busses/i2c-pca-platform.c | 59 |
1 files changed, 12 insertions, 47 deletions
diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c index 31d7f76ddd94..7db481cbf402 100644 --- a/drivers/i2c/busses/i2c-pca-platform.c +++ b/drivers/i2c/busses/i2c-pca-platform.c @@ -143,35 +143,23 @@ static int i2c_pca_pf_probe(struct platform_device *pdev) int ret = 0; int irq; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); /* If irq is 0, we do polling. */ if (irq < 0) irq = 0; - if (res == NULL) { - ret = -ENODEV; - goto e_print; - } + i2c = devm_kzalloc(&pdev->dev, sizeof(*i2c), GFP_KERNEL); + if (!i2c) + return -ENOMEM; - if (!request_mem_region(res->start, resource_size(res), res->name)) { - ret = -ENOMEM; - goto e_print; - } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + i2c->reg_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(i2c->reg_base)) + return PTR_ERR(i2c->reg_base); - i2c = kzalloc(sizeof(struct i2c_pca_pf_data), GFP_KERNEL); - if (!i2c) { - ret = -ENOMEM; - goto e_alloc; - } init_waitqueue_head(&i2c->wait); - i2c->reg_base = ioremap(res->start, resource_size(res)); - if (!i2c->reg_base) { - ret = -ENOMEM; - goto e_remap; - } i2c->io_base = res->start; i2c->io_size = resource_size(res); i2c->irq = irq; @@ -205,10 +193,8 @@ static int i2c_pca_pf_probe(struct platform_device *pdev) } else if (np) { i2c->adap.timeout = HZ; i2c->gpio = devm_gpiod_get_optional(&pdev->dev, "reset-gpios", GPIOD_OUT_LOW); - if (IS_ERR(i2c->gpio)) { - ret = PTR_ERR(i2c->gpio); - goto e_reqirq; - } + if (IS_ERR(i2c->gpio)) + return PTR_ERR(i2c->gpio); of_property_read_u32_index(np, "clock-frequency", 0, &i2c->algo_data.i2c_clock); } else { @@ -238,15 +224,14 @@ static int i2c_pca_pf_probe(struct platform_device *pdev) } if (irq) { - ret = request_irq(irq, i2c_pca_pf_handler, + ret = devm_request_irq(&pdev->dev, irq, i2c_pca_pf_handler, IRQF_TRIGGER_FALLING, pdev->name, i2c); if (ret) - goto e_reqirq; + return ret; } if (i2c_pca_add_numbered_bus(&i2c->adap) < 0) { - ret = -ENODEV; - goto e_adapt; + return -ENODEV; } platform_set_drvdata(pdev, i2c); @@ -254,19 +239,6 @@ static int i2c_pca_pf_probe(struct platform_device *pdev) printk(KERN_INFO "%s registered.\n", i2c->adap.name); return 0; - -e_adapt: - if (irq) - free_irq(irq, i2c); -e_reqirq: - iounmap(i2c->reg_base); -e_remap: - kfree(i2c); -e_alloc: - release_mem_region(res->start, resource_size(res)); -e_print: - printk(KERN_ERR "Registering PCA9564/PCA9665 FAILED! (%d)\n", ret); - return ret; } static int i2c_pca_pf_remove(struct platform_device *pdev) @@ -275,13 +247,6 @@ static int i2c_pca_pf_remove(struct platform_device *pdev) i2c_del_adapter(&i2c->adap); - if (i2c->irq) - free_irq(i2c->irq, i2c); - - iounmap(i2c->reg_base); - release_mem_region(i2c->io_base, i2c->io_size); - kfree(i2c); - return 0; } |