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authorWan ZongShun <mcuos.com@gmail.com>2010-06-02 18:49:53 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-06-02 14:02:39 +0100
commit5ef650ae5c94ee4d593169b82b6c306093360765 (patch)
tree2d6355d8565a82eccb706ad57148ae3755ee0d75 /sound/soc/s6000
parent85252b6ae5f7e8bba570309d1945eba63c53ad3e (diff)
downloadblackbird-op-linux-5ef650ae5c94ee4d593169b82b6c306093360765.tar.gz
blackbird-op-linux-5ef650ae5c94ee4d593169b82b6c306093360765.zip
ASoC: s6000: use resource_size for {request/release}_mem_region and ioremap
The size calculation is end - start + 1. But,sometimes, the '1' can be forgotten carelessly, witch will have potential risk, so use resource_size for {request/release}_mem_region and ioremap here should be good habit. Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Daniel Glöckner <dg@emlix.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/s6000')
-rw-r--r--sound/soc/s6000/s6000-i2s.c38
1 files changed, 17 insertions, 21 deletions
diff --git a/sound/soc/s6000/s6000-i2s.c b/sound/soc/s6000/s6000-i2s.c
index 5b9ac1759bd2..59e3fa7bcb05 100644
--- a/sound/soc/s6000/s6000-i2s.c
+++ b/sound/soc/s6000/s6000-i2s.c
@@ -451,16 +451,15 @@ static int __devinit s6000_i2s_probe(struct platform_device *pdev)
goto err_release_none;
}
- region = request_mem_region(scbmem->start,
- scbmem->end - scbmem->start + 1,
- pdev->name);
+ region = request_mem_region(scbmem->start, resource_size(scbmem),
+ pdev->name);
if (!region) {
dev_err(&pdev->dev, "I2S SCB region already claimed\n");
ret = -EBUSY;
goto err_release_none;
}
- mmio = ioremap(scbmem->start, scbmem->end - scbmem->start + 1);
+ mmio = ioremap(scbmem->start, resource_size(scbmem));
if (!mmio) {
dev_err(&pdev->dev, "can't ioremap SCB region\n");
ret = -ENOMEM;
@@ -474,9 +473,8 @@ static int __devinit s6000_i2s_probe(struct platform_device *pdev)
goto err_release_map;
}
- region = request_mem_region(sifmem->start,
- sifmem->end - sifmem->start + 1,
- pdev->name);
+ region = request_mem_region(sifmem->start, resource_size(sifmem),
+ pdev->name);
if (!region) {
dev_err(&pdev->dev, "I2S SIF region already claimed\n");
ret = -EBUSY;
@@ -490,8 +488,8 @@ static int __devinit s6000_i2s_probe(struct platform_device *pdev)
goto err_release_sif;
}
- region = request_mem_region(dma1->start, dma1->end - dma1->start + 1,
- pdev->name);
+ region = request_mem_region(dma1->start, resource_size(dma1),
+ pdev->name);
if (!region) {
dev_err(&pdev->dev, "I2S DMA region already claimed\n");
ret = -EBUSY;
@@ -500,9 +498,8 @@ static int __devinit s6000_i2s_probe(struct platform_device *pdev)
dma2 = platform_get_resource(pdev, IORESOURCE_DMA, 1);
if (dma2) {
- region = request_mem_region(dma2->start,
- dma2->end - dma2->start + 1,
- pdev->name);
+ region = request_mem_region(dma2->start, resource_size(dma2),
+ pdev->name);
if (!region) {
dev_err(&pdev->dev,
"I2S DMA region already claimed\n");
@@ -561,15 +558,15 @@ err_release_dev:
kfree(dev);
err_release_dma2:
if (dma2)
- release_mem_region(dma2->start, dma2->end - dma2->start + 1);
+ release_mem_region(dma2->start, resource_size(dma2));
err_release_dma1:
- release_mem_region(dma1->start, dma1->end - dma1->start + 1);
+ release_mem_region(dma1->start, resource_size(dma1));
err_release_sif:
- release_mem_region(sifmem->start, (sifmem->end - sifmem->start) + 1);
+ release_mem_region(sifmem->start, resource_size(sifmem));
err_release_map:
iounmap(mmio);
err_release_scb:
- release_mem_region(scbmem->start, (scbmem->end - scbmem->start) + 1);
+ release_mem_region(scbmem->start, resource_size(scbmem));
err_release_none:
return ret;
}
@@ -590,19 +587,18 @@ static void __devexit s6000_i2s_remove(struct platform_device *pdev)
kfree(dev);
region = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- release_mem_region(region->start, region->end - region->start + 1);
+ release_mem_region(region->start, resource_size(region));
region = platform_get_resource(pdev, IORESOURCE_DMA, 1);
if (region)
- release_mem_region(region->start,
- region->end - region->start + 1);
+ release_mem_region(region->start, resource_size(region));
region = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(region->start, (region->end - region->start) + 1);
+ release_mem_region(region->start, resource_size(region));
iounmap(mmio);
region = platform_get_resource(pdev, IORESOURCE_IO, 0);
- release_mem_region(region->start, (region->end - region->start) + 1);
+ release_mem_region(region->start, resource_size(region));
}
static struct platform_driver s6000_i2s_driver = {
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