diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2013-03-13 04:57:27 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-03-22 11:13:55 +0100 |
| commit | 264878e6a7eb02841100beb0d999987ef3b5e17f (patch) | |
| tree | 80652dfa169e06f2fba708337f4ce2995699c5c1 /drivers/char/hw_random/mxc-rnga.c | |
| parent | crypto: caam - Fix missing init of '.type' in AEAD algos. (diff) | |
| download | linux-264878e6a7eb02841100beb0d999987ef3b5e17f.tar.xz linux-264878e6a7eb02841100beb0d999987ef3b5e17f.zip | |
hwrng: mxc-rnga - Use devm_ioremap_resource()
Using devm_ioremap_resource() can make the code cleaner and simpler.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char/hw_random/mxc-rnga.c')
| -rw-r--r-- | drivers/char/hw_random/mxc-rnga.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c index f05d85713fd3..93fc74164ee6 100644 --- a/drivers/char/hw_random/mxc-rnga.c +++ b/drivers/char/hw_random/mxc-rnga.c @@ -142,7 +142,7 @@ static void mxc_rnga_cleanup(struct hwrng *rng) static int __init mxc_rnga_probe(struct platform_device *pdev) { int err = -ENODEV; - struct resource *res, *mem; + struct resource *res; struct mxc_rng *mxc_rng; mxc_rng = devm_kzalloc(&pdev->dev, sizeof(struct mxc_rng), @@ -172,15 +172,9 @@ static int __init mxc_rnga_probe(struct platform_device *pdev) goto err_region; } - mem = request_mem_region(res->start, resource_size(res), pdev->name); - if (mem == NULL) { - err = -EBUSY; - goto err_region; - } - - mxc_rng->mem = ioremap(res->start, resource_size(res)); - if (!mxc_rng->mem) { - err = -ENOMEM; + mxc_rng->mem = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(mxc_rng->mem)) { + err = PTR_ERR(mxc_rng->mem); goto err_ioremap; } @@ -195,8 +189,6 @@ static int __init mxc_rnga_probe(struct platform_device *pdev) return 0; err_ioremap: - release_mem_region(res->start, resource_size(res)); - err_region: clk_disable_unprepare(mxc_rng->clk); @@ -206,15 +198,10 @@ out: static int __exit mxc_rnga_remove(struct platform_device *pdev) { - struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); struct mxc_rng *mxc_rng = platform_get_drvdata(pdev); hwrng_unregister(&mxc_rng->rng); - iounmap(mxc_rng->mem); - - release_mem_region(res->start, resource_size(res)); - clk_disable_unprepare(mxc_rng->clk); return 0; |