ASoC: use resource_size for au1x

Use the resource_size function instead of manually calculating the
resource size.This patch can reduce the chance of introducing off-by-one
errors.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Manuel Lauss <manuel.lauss@googlemail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 10 insertions, 17 deletions

diff --git a/sound/soc/au1x/psc-ac97.c b/sound/soc/au1x/psc-ac97.c
index a61ccd2d505f..d14a5a91a465 100644
--- a/sound/soc/au1x/psc-ac97.c
+++ b/sound/soc/au1x/psc-ac97.c
@@ -375,12 +375,10 @@ static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
         }
 
         ret = -EBUSY;
-        wd->ioarea = request_mem_region(r->start, r->end - r->start + 1,
-                                        "au1xpsc_ac97");
-        if (!wd->ioarea)
+        if (!request_mem_region(r->start, resource_size(r), pdev->name))
                 goto out0;
 
-        wd->mmio = ioremap(r->start, 0xffff);
+        wd->mmio = ioremap(r->start, resource_size(r));
         if (!wd->mmio)
                 goto out1;
 
@@ -410,8 +408,7 @@ static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
 
         snd_soc_unregister_dai(&au1xpsc_ac97_dai);
 out1:
-        release_resource(wd->ioarea);
-        kfree(wd->ioarea);
+        release_mem_region(r->start, resource_size(r));
 out0:
         kfree(wd);
         return ret;
@@ -420,6 +417,7 @@ out0:
 static int __devexit au1xpsc_ac97_drvremove(struct platform_device *pdev)
 {
         struct au1xpsc_audio_data *wd = platform_get_drvdata(pdev);
+        struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
         if (wd->dmapd)
                 au1xpsc_pcm_destroy(wd->dmapd);
@@ -433,8 +431,7 @@ static int __devexit au1xpsc_ac97_drvremove(struct platform_device *pdev)
         au_sync();
 
         iounmap(wd->mmio);
-        release_resource(wd->ioarea);
-        kfree(wd->ioarea);
+        release_mem_region(r->start, resource_size(r));
         kfree(wd);
 
         au1xpsc_ac97_workdata = NULL;   /* MDEV */
diff --git a/sound/soc/au1x/psc-i2s.c b/sound/soc/au1x/psc-i2s.c
index 495be6e71931..737b2384f6c5 100644
--- a/sound/soc/au1x/psc-i2s.c
+++ b/sound/soc/au1x/psc-i2s.c
@@ -321,12 +321,10 @@ static int __init au1xpsc_i2s_drvprobe(struct platform_device *pdev)
         }
 
         ret = -EBUSY;
-        wd->ioarea = request_mem_region(r->start, r->end - r->start + 1,
-                                        "au1xpsc_i2s");
-        if (!wd->ioarea)
+        if (!request_mem_region(r->start, resource_size(r), pdev->name))
                 goto out0;
 
-        wd->mmio = ioremap(r->start, 0xffff);
+        wd->mmio = ioremap(r->start, resource_size(r));
         if (!wd->mmio)
                 goto out1;
 
@@ -362,8 +360,7 @@ static int __init au1xpsc_i2s_drvprobe(struct platform_device *pdev)
 
         snd_soc_unregister_dai(&au1xpsc_i2s_dai);
 out1:
-        release_resource(wd->ioarea);
-        kfree(wd->ioarea);
+        release_mem_region(r->start, resource_size(r));
 out0:
         kfree(wd);
         return ret;
@@ -372,6 +369,7 @@ out0:
 static int __devexit au1xpsc_i2s_drvremove(struct platform_device *pdev)
 {
         struct au1xpsc_audio_data *wd = platform_get_drvdata(pdev);
+        struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
         if (wd->dmapd)
                 au1xpsc_pcm_destroy(wd->dmapd);
@@ -384,8 +382,7 @@ static int __devexit au1xpsc_i2s_drvremove(struct platform_device *pdev)
         au_sync();
 
         iounmap(wd->mmio);
-        release_resource(wd->ioarea);
-        kfree(wd->ioarea);
+        release_mem_region(r->start, resource_size(r));
         kfree(wd);
 
         au1xpsc_i2s_workdata = NULL;    /* MDEV */
diff --git a/sound/soc/au1x/psc.h b/sound/soc/au1x/psc.h
index 32d3807d3f5a..093775d4dc3e 100644
--- a/sound/soc/au1x/psc.h
+++ b/sound/soc/au1x/psc.h
@@ -32,7 +32,6 @@ struct au1xpsc_audio_data {
         unsigned long rate;
 
         unsigned long pm[2];
-        struct resource *ioarea;
         struct mutex lock;
         struct platform_device *dmapd;
 };