4 files changed, 23 insertions, 10 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index c540637eb16a..c83fd7b64201 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -482,6 +482,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     reference_rate      - reference sample rate, 44100 or 48000 (default)
     multiple            - multiple to ref. sample rate, 1 or 2 (default)
+    subsystem           - override the PCI SSID for probing; the value
+                          consists of SSVID << 16 | SSDID.  The default is
+                          zero, which means no override.
 
     This module supports multiple cards.
 
diff --git a/sound/pci/ctxfi/ctatc.c b/sound/pci/ctxfi/ctatc.c
index cb65bd0dd35b..903594e6ed79 100644
--- a/sound/pci/ctxfi/ctatc.c
+++ b/sound/pci/ctxfi/ctatc.c
@@ -1225,10 +1225,11 @@ static int atc_dev_free(struct snd_device *dev)
         return ct_atc_destroy(atc);
 }
 
-static int __devinit atc_identify_card(struct ct_atc *atc)
+static int __devinit atc_identify_card(struct ct_atc *atc, unsigned int ssid)
 {
         const struct snd_pci_quirk *p;
         const struct snd_pci_quirk *list;
+        u16 vendor_id, device_id;
 
         switch (atc->chip_type) {
         case ATC20K1:
@@ -1242,13 +1243,19 @@ static int __devinit atc_identify_card(struct ct_atc *atc)
         default:
                 return -ENOENT;
         }
-        p = snd_pci_quirk_lookup(atc->pci, list);
+        if (ssid) {
+                vendor_id = ssid >> 16;
+                device_id = ssid & 0xffff;
+        } else {
+                vendor_id = atc->pci->subsystem_vendor;
+                device_id = atc->pci->subsystem_device;
+        }
+        p = snd_pci_quirk_lookup_id(vendor_id, device_id, list);
         if (p) {
                 if (p->value < 0) {
                         printk(KERN_ERR "ctxfi: "
                                "Device %04x:%04x is black-listed\n",
-                               atc->pci->subsystem_vendor,
-                               atc->pci->subsystem_device);
+                               vendor_id, device_id);
                         return -ENOENT;
                 }
                 atc->model = p->value;
@@ -1261,8 +1268,7 @@ static int __devinit atc_identify_card(struct ct_atc *atc)
         atc->model_name = ct_subsys_name[atc->model];
         snd_printd("ctxfi: chip %s model %s (%04x:%04x) is found\n",
                    atc->chip_name, atc->model_name,
-                   atc->pci->subsystem_vendor,
-                   atc->pci->subsystem_device);
+                   vendor_id, device_id);
         return 0;
 }
 
@@ -1636,7 +1642,8 @@ static struct ct_atc atc_preset __devinitdata = {
 
 int __devinit ct_atc_create(struct snd_card *card, struct pci_dev *pci,
                             unsigned int rsr, unsigned int msr,
-                            int chip_type, struct ct_atc **ratc)
+                            int chip_type, unsigned int ssid,
+                            struct ct_atc **ratc)
 {
         struct ct_atc *atc;
         static struct snd_device_ops ops = {
@@ -1662,7 +1669,7 @@ int __devinit ct_atc_create(struct snd_card *card, struct pci_dev *pci,
         mutex_init(&atc->atc_mutex);
 
         /* Find card model */
-        err = atc_identify_card(atc);
+        err = atc_identify_card(atc, ssid);
         if (err < 0) {
                 printk(KERN_ERR "ctatc: Card not recognised\n");
                 goto error1;
diff --git a/sound/pci/ctxfi/ctatc.h b/sound/pci/ctxfi/ctatc.h
index 9fd8a5708943..7167c0185d52 100644
--- a/sound/pci/ctxfi/ctatc.h
+++ b/sound/pci/ctxfi/ctatc.h
@@ -148,7 +148,7 @@ struct ct_atc {
 
 int __devinit ct_atc_create(struct snd_card *card, struct pci_dev *pci,
                             unsigned int rsr, unsigned int msr, int chip_type,
-                            struct ct_atc **ratc);
+                            unsigned int subsysid, struct ct_atc **ratc);
 int __devinit ct_atc_create_alsa_devs(struct ct_atc *atc);
 
 #endif /* CTATC_H */
diff --git a/sound/pci/ctxfi/xfi.c b/sound/pci/ctxfi/xfi.c
index 76541748e7bc..ed44ed788b60 100644
--- a/sound/pci/ctxfi/xfi.c
+++ b/sound/pci/ctxfi/xfi.c
@@ -32,6 +32,7 @@ module_param(multiple, uint, S_IRUGO);
 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+static unsigned int subsystem[SNDRV_CARDS];
 
 module_param_array(index, int, NULL, 0444);
 MODULE_PARM_DESC(index, "Index value for Creative X-Fi driver");
@@ -39,6 +40,8 @@ module_param_array(id, charp, NULL, 0444);
 MODULE_PARM_DESC(id, "ID string for Creative X-Fi driver");
 module_param_array(enable, bool, NULL, 0444);
 MODULE_PARM_DESC(enable, "Enable Creative X-Fi driver");
+module_param_array(subsystem, int, NULL, 0444);
+MODULE_PARM_DESC(subsystem, "Override subsystem ID for Creative X-Fi driver");
 
 static struct pci_device_id ct_pci_dev_ids[] = {
         /* only X-Fi is supported, so... */
@@ -85,7 +88,7 @@ ct_card_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
                 multiple = 2;
         }
         err = ct_atc_create(card, pci, reference_rate, multiple,
-                            pci_id->driver_data, &atc);
+                            pci_id->driver_data, subsystem[dev], &atc);
         if (err < 0)
                 goto error;