ALSA: Return proper error code at probe in sound/usb/*
Some drivers in soudn/usb/* don't handle the error code properly
from snd_card_create(). This patch fixes these places.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/caiaq/caiaq-device.c b/sound/usb/caiaq/caiaq-device.c
index 63a2c1d..55a9075 100644
--- a/sound/usb/caiaq/caiaq-device.c
+++ b/sound/usb/caiaq/caiaq-device.c
@@ -336,7 +336,7 @@
log("Unable to set up control system (ret=%d)\n", ret);
}
-static struct snd_card* create_card(struct usb_device* usb_dev)
+static int create_card(struct usb_device* usb_dev, struct snd_card **cardp)
{
int devnum;
int err;
@@ -348,12 +348,12 @@
break;
if (devnum >= SNDRV_CARDS)
- return NULL;
+ return -ENODEV;
err = snd_card_create(index[devnum], id[devnum], THIS_MODULE,
sizeof(struct snd_usb_caiaqdev), &card);
if (err < 0)
- return NULL;
+ return err;
dev = caiaqdev(card);
dev->chip.dev = usb_dev;
@@ -363,7 +363,8 @@
spin_lock_init(&dev->spinlock);
snd_card_set_dev(card, &usb_dev->dev);
- return card;
+ *cardp = card;
+ return 0;
}
static int __devinit init_card(struct snd_usb_caiaqdev *dev)
@@ -442,10 +443,10 @@
struct snd_card *card;
struct usb_device *device = interface_to_usbdev(intf);
- card = create_card(device);
+ ret = create_card(device, &card);
- if (!card)
- return -ENOMEM;
+ if (ret < 0)
+ return ret;
usb_set_intfdata(intf, card);
ret = init_card(caiaqdev(card));
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index b21bb47..98276aa 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -478,7 +478,7 @@
return true;
}
-static struct snd_card *usx2y_create_card(struct usb_device *device)
+static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
{
int dev;
struct snd_card *card;
@@ -488,11 +488,11 @@
if (enable[dev] && !snd_us122l_card_used[dev])
break;
if (dev >= SNDRV_CARDS)
- return NULL;
+ return -ENODEV;
err = snd_card_create(index[dev], id[dev], THIS_MODULE,
sizeof(struct us122l), &card);
if (err < 0)
- return NULL;
+ return err;
snd_us122l_card_used[US122L(card)->chip.index = dev] = 1;
US122L(card)->chip.dev = device;
@@ -511,46 +511,57 @@
US122L(card)->chip.dev->devnum
);
snd_card_set_dev(card, &device->dev);
- return card;
+ *cardp = card;
+ return 0;
}
-static void *us122l_usb_probe(struct usb_interface *intf,
- const struct usb_device_id *device_id)
+static int us122l_usb_probe(struct usb_interface *intf,
+ const struct usb_device_id *device_id,
+ struct snd_card **cardp)
{
struct usb_device *device = interface_to_usbdev(intf);
- struct snd_card *card = usx2y_create_card(device);
+ struct snd_card *card;
+ int err;
- if (!card)
- return NULL;
+ err = usx2y_create_card(device, &card);
+ if (err < 0)
+ return err;
- if (!us122l_create_card(card) ||
- snd_card_register(card) < 0) {
+ if (!us122l_create_card(card)) {
snd_card_free(card);
- return NULL;
+ return -EINVAL;
+ }
+
+ err = snd_card_register(card);
+ if (err < 0) {
+ snd_card_free(card);
+ return err;
}
usb_get_dev(device);
- return card;
+ *cardp = card;
+ return 0;
}
static int snd_us122l_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct snd_card *card;
+ int err;
+
snd_printdd(KERN_DEBUG"%p:%i\n",
intf, intf->cur_altsetting->desc.bInterfaceNumber);
if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
return 0;
- card = us122l_usb_probe(usb_get_intf(intf), id);
-
- if (card) {
- usb_set_intfdata(intf, card);
- return 0;
+ err = us122l_usb_probe(usb_get_intf(intf), id, &card);
+ if (err < 0) {
+ usb_put_intf(intf);
+ return err;
}
- usb_put_intf(intf);
- return -EIO;
+ usb_set_intfdata(intf, card);
+ return 0;
}
static void snd_us122l_disconnect(struct usb_interface *intf)
diff --git a/sound/usb/usx2y/usbusx2y.c b/sound/usb/usx2y/usbusx2y.c
index b848a180..af8b849 100644
--- a/sound/usb/usx2y/usbusx2y.c
+++ b/sound/usb/usx2y/usbusx2y.c
@@ -333,7 +333,7 @@
{ /* terminator */ }
};
-static struct snd_card *usX2Y_create_card(struct usb_device *device)
+static int usX2Y_create_card(struct usb_device *device, struct snd_card **cardp)
{
int dev;
struct snd_card * card;
@@ -343,11 +343,11 @@
if (enable[dev] && !snd_usX2Y_card_used[dev])
break;
if (dev >= SNDRV_CARDS)
- return NULL;
+ return -ENODEV;
err = snd_card_create(index[dev], id[dev], THIS_MODULE,
sizeof(struct usX2Ydev), &card);
if (err < 0)
- return NULL;
+ return err;
snd_usX2Y_card_used[usX2Y(card)->chip.index = dev] = 1;
card->private_free = snd_usX2Y_card_private_free;
usX2Y(card)->chip.dev = device;
@@ -365,26 +365,36 @@
usX2Y(card)->chip.dev->bus->busnum, usX2Y(card)->chip.dev->devnum
);
snd_card_set_dev(card, &device->dev);
- return card;
+ *cardp = card;
+ return 0;
}
-static void *usX2Y_usb_probe(struct usb_device *device, struct usb_interface *intf, const struct usb_device_id *device_id)
+static int usX2Y_usb_probe(struct usb_device *device,
+ struct usb_interface *intf,
+ const struct usb_device_id *device_id,
+ struct snd_card **cardp)
{
int err;
struct snd_card * card;
+
+ *cardp = NULL;
if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
(le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
- le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428) ||
- !(card = usX2Y_create_card(device)))
- return NULL;
+ le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428))
+ return -EINVAL;
+
+ err = usX2Y_create_card(device, &card);
+ if (err < 0)
+ return err;
if ((err = usX2Y_hwdep_new(card, device)) < 0 ||
(err = snd_card_register(card)) < 0) {
snd_card_free(card);
- return NULL;
+ return err;
}
- return card;
+ *cardp = card;
+ return 0;
}
/*
@@ -392,13 +402,14 @@
*/
static int snd_usX2Y_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
- void *chip;
- chip = usX2Y_usb_probe(interface_to_usbdev(intf), intf, id);
- if (chip) {
- usb_set_intfdata(intf, chip);
- return 0;
- } else
- return -EIO;
+ struct snd_card *card;
+ int err;
+
+ err = usX2Y_usb_probe(interface_to_usbdev(intf), intf, id, &card);
+ if (err < 0)
+ return err;
+ dev_set_drvdata(&intf->dev, card);
+ return 0;
}
static void snd_usX2Y_disconnect(struct usb_interface *intf)