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authorAuke Kok <auke-jan.h.kok@intel.com>2007-06-08 15:46:36 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-11 16:02:10 -0700
commit44c10138fd4bbc4b6d6bff0873c24902f2a9da65 (patch)
tree6e16d3ec80c87490dc743f72da086356f2906ace /sound/pci/ca0106
parentb8a3a5214d7cc115f1ca3a3967b7229d97c46f4a (diff)
PCI: Change all drivers to use pci_device->revision
Instead of all drivers reading pci config space to get the revision ID, they can now use the pci_device->revision member. This exposes some issues where drivers where reading a word or a dword for the revision number, and adding useless error-handling around the read. Some drivers even just read it for no purpose of all. In devices where the revision ID is being copied over and used in what appears to be the equivalent of hotpath, I have left the copy code and the cached copy as not to influence the driver's performance. Compile tested with make all{yes,mod}config on x86_64 and i386. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound/pci/ca0106')
-rw-r--r--sound/pci/ca0106/ca0106.h1
-rw-r--r--sound/pci/ca0106/ca0106_main.c5
2 files changed, 2 insertions, 4 deletions
diff --git a/sound/pci/ca0106/ca0106.h b/sound/pci/ca0106/ca0106.h
index aaac6e5b476..a0420bc63f0 100644
--- a/sound/pci/ca0106/ca0106.h
+++ b/sound/pci/ca0106/ca0106.h
@@ -590,7 +590,6 @@ struct snd_ca0106 {
struct resource *res_port;
int irq;
- unsigned char revision; /* chip revision */
unsigned int serial; /* serial number */
unsigned short model; /* subsystem id */
diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c
index 48f3f17c517..9fd7b8a5b75 100644
--- a/sound/pci/ca0106/ca0106_main.c
+++ b/sound/pci/ca0106/ca0106_main.c
@@ -1293,13 +1293,12 @@ static int __devinit snd_ca0106_create(int dev, struct snd_card *card,
}
pci_set_master(pci);
- /* read revision & serial */
- pci_read_config_byte(pci, PCI_REVISION_ID, &chip->revision);
+ /* read serial */
pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
#if 1
printk(KERN_INFO "snd-ca0106: Model %04x Rev %08x Serial %08x\n", chip->model,
- chip->revision, chip->serial);
+ pci->revision, chip->serial);
#endif
strcpy(card->driver, "CA0106");
strcpy(card->shortname, "CA0106");