sound: oxygen: do not try to restore nonexistent EEPROM

On cards where the EEPROM was deliberately omitted, we do not need to
try to restore the EEPROM's contents.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index 9a8936e20744..c9f271419eb8 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -278,7 +278,11 @@ oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
 static void oxygen_restore_eeprom(struct oxygen *chip,
                                   const struct pci_device_id *id)
 {
-        if (oxygen_read_eeprom(chip, 0) != OXYGEN_EEPROM_ID) {
+        u16 eeprom_id;
+
+        eeprom_id = oxygen_read_eeprom(chip, 0);
+        if (eeprom_id != OXYGEN_EEPROM_ID &&
+            (eeprom_id != 0xffff || id->subdevice != 0x8788)) {
                 /*
                  * This function gets called only when a known card model has
                  * been detected, i.e., we know there is a valid subsystem