From: Takashi Iwai Date: Sun, 28 Dec 2008 15:55:08 +0000 (+0100) Subject: ALSA: Return proper error code at probe in sound/usb/* X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=51721f70acaca5aa056b07c5cbe58e62662c068c;p=linux-2.6-omap-h63xx.git 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 --- diff --git a/sound/usb/caiaq/caiaq-device.c b/sound/usb/caiaq/caiaq-device.c index 63a2c1d5779..55a9075cb09 100644 --- a/sound/usb/caiaq/caiaq-device.c +++ b/sound/usb/caiaq/caiaq-device.c @@ -336,7 +336,7 @@ static void __devinit setup_card(struct snd_usb_caiaqdev *dev) 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 @@ static struct snd_card* create_card(struct usb_device* usb_dev) 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 @@ static struct snd_card* create_card(struct usb_device* usb_dev) 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 @@ static int __devinit snd_probe(struct usb_interface *intf, 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 b21bb475c0f..98276aafefe 100644 --- a/sound/usb/usx2y/us122l.c +++ b/sound/usb/usx2y/us122l.c @@ -478,7 +478,7 @@ static bool us122l_create_card(struct snd_card *card) 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 @@ static struct snd_card *usx2y_create_card(struct usb_device *device) 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 @@ static struct snd_card *usx2y_create_card(struct usb_device *device) 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 b848a180638..af8b8495405 100644 --- a/sound/usb/usx2y/usbusx2y.c +++ b/sound/usb/usx2y/usbusx2y.c @@ -333,7 +333,7 @@ static struct usb_device_id snd_usX2Y_usb_id_table[] = { { /* 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 @@ static struct snd_card *usX2Y_create_card(struct usb_device *device) 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 @@ static struct snd_card *usX2Y_create_card(struct usb_device *device) 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 void *usX2Y_usb_probe(struct usb_device *device, struct usb_interface *in */ 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)