[ALSA] au88x0: Remove unneeded call to pci_dma_supported()

Modules: au88x0 driver

pci_dma_supported() is called right before pci_set_dma_mask() which already
calls pci_dma_supported().  The attached patch removes the unneeded call to
pci_dma_supported()

Additionally the custom VORTEX_DMA_MASK macro is replaced by DMA_32BIT_MASK
from linux/dma-mapping.h

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 2 insertions, 4 deletions

diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c
index 7c547859ae00..7d9184f7367a 100644
--- a/sound/pci/au88x0/au88x0.c
+++ b/sound/pci/au88x0/au88x0.c
@@ -20,6 +20,7 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
 #include <sound/initval.h>
 
 // module parameters (see "Module Parameters")
@@ -150,11 +151,10 @@ snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
         // check PCI availability (DMA).
         if ((err = pci_enable_device(pci)) < 0)
                 return err;
-        if (!pci_dma_supported(pci, VORTEX_DMA_MASK)) {
+        if (pci_set_dma_mask(pci, DMA_32BIT_MASK)) {
                 printk(KERN_ERR "error to set DMA mask\n");
                 return -ENXIO;
         }
-        pci_set_dma_mask(pci, VORTEX_DMA_MASK);
 
         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
         if (chip == NULL)
diff --git a/sound/pci/au88x0/au88x0.h b/sound/pci/au88x0/au88x0.h
index 745f995a20dd..c2ad2674bea7 100644
--- a/sound/pci/au88x0/au88x0.h
+++ b/sound/pci/au88x0/au88x0.h
@@ -39,8 +39,6 @@
 #include "au88x0_wt.h"
 #endif
 
-#define VORTEX_DMA_MASK 0xffffffff
-
 #define hwread(x,y) readl((x)+((y)>>2))
 #define hwwrite(x,y,z) writel((z),(x)+((y)>>2))