From: Kulikov Vasiliy Date: Tue, 13 Jul 2010 11:22:46 +0000 (+0400) Subject: Staging: line6: fix leaks in line6_probe() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ab366c1a;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git Staging: line6: fix leaks in line6_probe() If error occurs line6_probe() must put interface and usbdev that were got before. Signed-off-by: Kulikov Vasiliy Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/line6/driver.c b/drivers/staging/line6/driver.c index 1d5a47302763..27b986a50a03 100644 --- a/drivers/staging/line6/driver.c +++ b/drivers/staging/line6/driver.c @@ -679,8 +679,10 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ usb_get_dev(usbdev); /* we don't handle multiple configurations */ - if (usbdev->descriptor.bNumConfigurations != 1) - return -ENODEV; + if (usbdev->descriptor.bNumConfigurations != 1) { + ret = -ENODEV; + goto err_put; + } /* check vendor and product id */ for (devtype = ARRAY_SIZE(line6_id_table) - 1; devtype--;) { @@ -692,16 +694,20 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ break; } - if (devtype < 0) - return -ENODEV; + if (devtype < 0) { + ret = -ENODEV; + goto err_put; + } /* find free slot in device table: */ for (devnum = 0; devnum < LINE6_MAX_DEVICES; ++devnum) if (line6_devices[devnum] == NULL) break; - if (devnum == LINE6_MAX_DEVICES) - return -ENODEV; + if (devnum == LINE6_MAX_DEVICES) { + ret = -ENODEV; + goto err_put; + } /* initialize device info: */ properties = &line6_properties_table[devtype]; @@ -762,13 +768,14 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ default: MISSING_CASE; - return -ENODEV; + ret = -ENODEV; + goto err_put; } ret = usb_set_interface(usbdev, interface_number, alternate); if (ret < 0) { dev_err(&interface->dev, "set_interface failed\n"); - return ret; + goto err_put; } /* initialize device data based on product id: */ @@ -815,7 +822,8 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ break; default: - return -ENODEV; + ret = -ENODEV; + goto err_put; } break; @@ -827,19 +835,22 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ default: MISSING_CASE; - return -ENODEV; + ret = -ENODEV; + goto err_put; } if (size == 0) { dev_err(line6->ifcdev, "driver bug: interface data size not set\n"); - return -ENODEV; + ret = -ENODEV; + goto err_put; } line6 = kzalloc(size, GFP_KERNEL); if (line6 == NULL) { dev_err(&interface->dev, "Out of memory\n"); - return -ENOMEM; + ret = -ENODEV; + goto err_put; } /* store basic data: */ @@ -875,16 +886,16 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ if (line6->buffer_listen == NULL) { dev_err(&interface->dev, "Out of memory\n"); - line6_destruct(interface); - return -ENOMEM; + ret = -ENOMEM; + goto err_destruct; } line6->buffer_message = kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL); if (line6->buffer_message == NULL) { dev_err(&interface->dev, "Out of memory\n"); - line6_destruct(interface); - return -ENOMEM; + ret = -ENOMEM; + goto err_destruct; } line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL); @@ -892,15 +903,15 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ if (line6->urb_listen == NULL) { dev_err(&interface->dev, "Out of memory\n"); line6_destruct(interface); - return -ENOMEM; + ret = -ENOMEM; + goto err_destruct; } ret = line6_start_listen(line6); if (ret < 0) { dev_err(&interface->dev, "%s: usb_submit_urb failed\n", __func__); - line6_destruct(interface); - return ret; + goto err_destruct; } } @@ -952,22 +963,25 @@ static int line6_probe(struct usb_interface *interface, const struct usb_device_ ret = -ENODEV; } - if (ret < 0) { - line6_destruct(interface); - return ret; - } + if (ret < 0) + goto err_destruct; ret = sysfs_create_link(&interface->dev.kobj, &usbdev->dev.kobj, "usb_device"); - if (ret < 0) { - line6_destruct(interface); - return ret; - } + if (ret < 0) + goto err_destruct; dev_info(&interface->dev, "Line6 %s now attached\n", line6->properties->name); line6_devices[devnum] = line6; line6_list_devices(); + return 0; + +err_destruct: + line6_destruct(interface); +err_put: + usb_put_intf(interface); + usb_put_dev(usbdev); return ret; }