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author | Axel Lin <axel.lin@ingics.com> | 2015-06-09 15:52:49 +0800 |
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committer | Wolfram Sang <wsa@the-dreams.de> | 2015-10-23 23:31:11 +0200 |
commit | 174f2366b076db3876c3b7f595edf2aa739f9d43 (patch) | |
tree | 47bed7c138b182dbb1838afdc4fbfcc6eef13e2f | |
parent | 9e685c84c266582ad002311497684f183db6b937 (diff) | |
download | linux-stable-174f2366b076db3876c3b7f595edf2aa739f9d43.tar.gz linux-stable-174f2366b076db3876c3b7f595edf2aa739f9d43.tar.bz2 linux-stable-174f2366b076db3876c3b7f595edf2aa739f9d43.zip |
i2c: au1550: Convert to devm_kzalloc and devm_ioremap_resource
Use devm_* APIs to simplify the code.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
-rw-r--r-- | drivers/i2c/busses/i2c-au1550.c | 52 |
1 files changed, 13 insertions, 39 deletions
diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c index 4de110791ed5..5bcb1f0bb334 100644 --- a/drivers/i2c/busses/i2c-au1550.c +++ b/drivers/i2c/busses/i2c-au1550.c @@ -48,7 +48,6 @@ struct i2c_au1550_data { void __iomem *psc_base; int xfer_timeout; struct i2c_adapter adap; - struct resource *ioarea; }; static inline void WR(struct i2c_au1550_data *a, int r, unsigned long v) @@ -315,30 +314,16 @@ i2c_au1550_probe(struct platform_device *pdev) struct resource *r; int ret; - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) { - ret = -ENODEV; - goto out; - } + priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_au1550_data), + GFP_KERNEL); + if (!priv) + return -ENOMEM; - priv = kzalloc(sizeof(struct i2c_au1550_data), GFP_KERNEL); - if (!priv) { - ret = -ENOMEM; - goto out; - } - - priv->ioarea = request_mem_region(r->start, resource_size(r), - pdev->name); - if (!priv->ioarea) { - ret = -EBUSY; - goto out_mem; - } + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->psc_base = devm_ioremap_resource(&pdev->dev, r); + if (IS_ERR(priv->psc_base)) + return PTR_ERR(priv->psc_base); - priv->psc_base = ioremap(r->start, resource_size(r)); - if (!priv->psc_base) { - ret = -EIO; - goto out_map; - } priv->xfer_timeout = 200; priv->adap.nr = pdev->id; @@ -351,20 +336,13 @@ i2c_au1550_probe(struct platform_device *pdev) i2c_au1550_setup(priv); ret = i2c_add_numbered_adapter(&priv->adap); - if (ret == 0) { - platform_set_drvdata(pdev, priv); - return 0; + if (ret) { + i2c_au1550_disable(priv); + return ret; } - i2c_au1550_disable(priv); - iounmap(priv->psc_base); -out_map: - release_resource(priv->ioarea); - kfree(priv->ioarea); -out_mem: - kfree(priv); -out: - return ret; + platform_set_drvdata(pdev, priv); + return 0; } static int i2c_au1550_remove(struct platform_device *pdev) @@ -373,10 +351,6 @@ static int i2c_au1550_remove(struct platform_device *pdev) i2c_del_adapter(&priv->adap); i2c_au1550_disable(priv); - iounmap(priv->psc_base); - release_resource(priv->ioarea); - kfree(priv->ioarea); - kfree(priv); return 0; } |