[ALSA] usb-audio: don't call usb_reset_configuration() when probing

Modules: USB generic driver

Remove the usb_reset_configuration() call from the probe callback
because it isn't needed and it may interfere with other drivers
already loaded for the device.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 4589c63..fce6ad6 100644 (file)
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -3212,7 +3212,6 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
                                 struct usb_interface *intf,
                                 const struct usb_device_id *usb_id)
 {
-       struct usb_host_config *config = dev->actconfig;
        const snd_usb_audio_quirk_t *quirk = (const snd_usb_audio_quirk_t *)usb_id->driver_info;
        int i, err;
        snd_usb_audio_t *chip;
@@ -3233,7 +3232,6 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
        if (id == USB_ID(0x041e, 0x3000)) {
                if (snd_usb_extigy_boot_quirk(dev, intf) < 0)
                        goto __err_val;
-               config = dev->actconfig;
        }
        /* SB Audigy 2 NX needs its own boot-up magic, too */
        if (id == USB_ID(0x041e, 0x3020)) {
@@ -3262,11 +3260,6 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
                /* it's a fresh one.
                 * now look for an empty slot and create a new card instance
                 */
-               /* first, set the current configuration for this device */
-               if (usb_reset_configuration(dev) < 0) {
-                       snd_printk(KERN_ERR "cannot reset configuration (value 0x%x)\n", get_cfg_desc(config)->bConfigurationValue);
-                       goto __error;
-               }
                for (i = 0; i < SNDRV_CARDS; i++)
                        if (enable[i] && ! usb_chip[i] &&
                            (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&