[ALSA] Fix invalid assignment of PCI revision

Fix the type of PCI revision to char from int and avoid invalid
assignment with pointer cast.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c
index c46905a..e072439 100644
--- a/sound/pci/emu10k1/emu10k1x.c
+++ b/sound/pci/emu10k1/emu10k1x.c
@@ -235,7 +235,7 @@
 	struct resource *res_port;
 	int irq;
 
-	unsigned int revision;		/* chip revision */
+	unsigned char revision;		/* chip revision */
 	unsigned int serial;            /* serial number */
 	unsigned short model;		/* subsystem id */
 
@@ -943,7 +943,7 @@
 
 	pci_set_master(pci);
 	/* read revision & serial */
-	pci_read_config_byte(pci, PCI_REVISION_ID, (char *)&chip->revision);
+	pci_read_config_byte(pci, PCI_REVISION_ID, &chip->revision);
 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
 	snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,