USB iowarrior.c: fix check-after-use

[linux-2.6-omap-h63xx.git] / drivers / usb / misc / cytherm.c

diff --git a/drivers/usb/misc/cytherm.c b/drivers/usb/misc/cytherm.c
index 6671317b495f4c996319463fd29796ae92a5b99e..2677fea147d9ef163053c8a2b458edf170515aec 100644 (file)
--- a/drivers/usb/misc/cytherm.c
+++ b/drivers/usb/misc/cytherm.c
@@ -14,7 +14,6 @@
  */
 
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/init.h>
@@ -119,7 +118,7 @@ static ssize_t set_brightness(struct device *dev, struct device_attribute *attr,
                                cytherm->brightness, buffer, 8);
        if (retval)
                dev_dbg(&cytherm->udev->dev, "retval = %d\n", retval);
-       /* Inform µC that we have changed the brightness setting */
+       /* Inform µC that we have changed the brightness setting */
        retval = vendor_command(cytherm->udev, WRITE_RAM, BRIGHTNESS_SEM,
                                0x01, buffer, 8);
        if (retval)
@@ -351,12 +350,11 @@ static int cytherm_probe(struct usb_interface *interface,
        struct usb_cytherm *dev = NULL;
        int retval = -ENOMEM;
 
-       dev = kmalloc (sizeof(struct usb_cytherm), GFP_KERNEL);
+       dev = kzalloc (sizeof(struct usb_cytherm), GFP_KERNEL);
        if (dev == NULL) {
                dev_err (&interface->dev, "Out of memory\n");
-               goto error;
+               goto error_mem;
        }
-       memset (dev, 0x00, sizeof (*dev));
 
        dev->udev = usb_get_dev(udev);
 
@@ -364,18 +362,35 @@ static int cytherm_probe(struct usb_interface *interface,
 
        dev->brightness = 0xFF;
 
-       device_create_file(&interface->dev, &dev_attr_brightness);   
-       device_create_file(&interface->dev, &dev_attr_temp);
-       device_create_file(&interface->dev, &dev_attr_button);
-       device_create_file(&interface->dev, &dev_attr_port0);
-       device_create_file(&interface->dev, &dev_attr_port1);
+       retval = device_create_file(&interface->dev, &dev_attr_brightness);
+       if (retval)
+               goto error;
+       retval = device_create_file(&interface->dev, &dev_attr_temp);
+       if (retval)
+               goto error;
+       retval = device_create_file(&interface->dev, &dev_attr_button);
+       if (retval)
+               goto error;
+       retval = device_create_file(&interface->dev, &dev_attr_port0);
+       if (retval)
+               goto error;
+       retval = device_create_file(&interface->dev, &dev_attr_port1);
+       if (retval)
+               goto error;
 
-       dev_info (&interface->dev, 
+       dev_info (&interface->dev,
                  "Cypress thermometer device now attached\n");
        return 0;
-
- error:
+error:
+       device_remove_file(&interface->dev, &dev_attr_brightness);
+       device_remove_file(&interface->dev, &dev_attr_temp);
+       device_remove_file(&interface->dev, &dev_attr_button);
+       device_remove_file(&interface->dev, &dev_attr_port0);
+       device_remove_file(&interface->dev, &dev_attr_port1);
+       usb_set_intfdata (interface, NULL);
+       usb_put_dev(dev->udev);
        kfree(dev);
+error_mem:
        return retval;
 }