diff options
Diffstat (limited to 'drivers/usb/misc/legousbtower.c')
| -rw-r--r-- | drivers/usb/misc/legousbtower.c | 89 |
1 files changed, 34 insertions, 55 deletions
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index ab4b98b04115..379cf01a6e96 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -245,7 +245,7 @@ static const struct file_operations tower_fops = { .llseek = tower_llseek, }; -static char *legousbtower_devnode(struct device *dev, umode_t *mode) +static char *legousbtower_devnode(const struct device *dev, umode_t *mode) { return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev)); } @@ -271,7 +271,7 @@ static struct usb_driver tower_driver = { }; -/** +/* * lego_usb_tower_debug_data */ static inline void lego_usb_tower_debug_data(struct device *dev, @@ -283,7 +283,7 @@ static inline void lego_usb_tower_debug_data(struct device *dev, } -/** +/* * tower_delete */ static inline void tower_delete(struct lego_usb_tower *dev) @@ -299,7 +299,7 @@ static inline void tower_delete(struct lego_usb_tower *dev) } -/** +/* * tower_open */ static int tower_open(struct inode *inode, struct file *file) @@ -308,15 +308,9 @@ static int tower_open(struct inode *inode, struct file *file) int subminor; int retval = 0; struct usb_interface *interface; - struct tower_reset_reply *reset_reply; + struct tower_reset_reply reset_reply; int result; - reset_reply = kmalloc(sizeof(*reset_reply), GFP_KERNEL); - if (!reset_reply) { - retval = -ENOMEM; - goto exit; - } - nonseekable_open(inode, file); subminor = iminor(inode); @@ -347,15 +341,12 @@ static int tower_open(struct inode *inode, struct file *file) } /* reset the tower */ - result = usb_control_msg(dev->udev, - usb_rcvctrlpipe(dev->udev, 0), - LEGO_USB_TOWER_REQUEST_RESET, - USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, - 0, - 0, - reset_reply, - sizeof(*reset_reply), - 1000); + result = usb_control_msg_recv(dev->udev, 0, + LEGO_USB_TOWER_REQUEST_RESET, + USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, + 0, 0, + &reset_reply, sizeof(reset_reply), 1000, + GFP_KERNEL); if (result < 0) { dev_err(&dev->udev->dev, "LEGO USB Tower reset control request failed\n"); @@ -394,11 +385,10 @@ unlock_exit: mutex_unlock(&dev->lock); exit: - kfree(reset_reply); return retval; } -/** +/* * tower_release */ static int tower_release(struct inode *inode, struct file *file) @@ -440,7 +430,7 @@ exit: return retval; } -/** +/* * tower_check_for_read_packet * * To get correct semantics for signals and non-blocking I/O @@ -461,7 +451,7 @@ static void tower_check_for_read_packet(struct lego_usb_tower *dev) } -/** +/* * tower_poll */ static __poll_t tower_poll(struct file *file, poll_table *wait) @@ -487,7 +477,7 @@ static __poll_t tower_poll(struct file *file, poll_table *wait) } -/** +/* * tower_llseek */ static loff_t tower_llseek(struct file *file, loff_t off, int whence) @@ -496,7 +486,7 @@ static loff_t tower_llseek(struct file *file, loff_t off, int whence) } -/** +/* * tower_read */ static ssize_t tower_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) @@ -580,7 +570,7 @@ exit: } -/** +/* * tower_write */ static ssize_t tower_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) @@ -662,7 +652,7 @@ exit: } -/** +/* * tower_interrupt_in_callback */ static void tower_interrupt_in_callback(struct urb *urb) @@ -717,7 +707,7 @@ exit: } -/** +/* * tower_interrupt_out_callback */ static void tower_interrupt_out_callback(struct urb *urb) @@ -742,7 +732,7 @@ static void tower_interrupt_out_callback(struct urb *urb) } -/** +/* * tower_probe * * Called by the usb core when a new device is connected that it thinks @@ -753,7 +743,7 @@ static int tower_probe(struct usb_interface *interface, const struct usb_device_ struct device *idev = &interface->dev; struct usb_device *udev = interface_to_usbdev(interface); struct lego_usb_tower *dev; - struct tower_get_version_reply *get_version_reply = NULL; + struct tower_get_version_reply get_version_reply; int retval = -ENOMEM; int result; @@ -798,34 +788,25 @@ static int tower_probe(struct usb_interface *interface, const struct usb_device_ dev->interrupt_in_interval = interrupt_in_interval ? interrupt_in_interval : dev->interrupt_in_endpoint->bInterval; dev->interrupt_out_interval = interrupt_out_interval ? interrupt_out_interval : dev->interrupt_out_endpoint->bInterval; - get_version_reply = kmalloc(sizeof(*get_version_reply), GFP_KERNEL); - if (!get_version_reply) { - retval = -ENOMEM; - goto error; - } - /* get the firmware version and log it */ - result = usb_control_msg(udev, - usb_rcvctrlpipe(udev, 0), - LEGO_USB_TOWER_REQUEST_GET_VERSION, - USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, - 0, - 0, - get_version_reply, - sizeof(*get_version_reply), - 1000); - if (result != sizeof(*get_version_reply)) { - if (result >= 0) - result = -EIO; + result = usb_control_msg_recv(udev, 0, + LEGO_USB_TOWER_REQUEST_GET_VERSION, + USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, + 0, + 0, + &get_version_reply, + sizeof(get_version_reply), + 1000, GFP_KERNEL); + if (result) { dev_err(idev, "get version request failed: %d\n", result); retval = result; goto error; } dev_info(&interface->dev, "LEGO USB Tower firmware version is %d.%d build %d\n", - get_version_reply->major, - get_version_reply->minor, - le16_to_cpu(get_version_reply->build_no)); + get_version_reply.major, + get_version_reply.minor, + le16_to_cpu(get_version_reply.build_no)); /* we can register the device now, as it is ready */ usb_set_intfdata(interface, dev); @@ -844,17 +825,15 @@ static int tower_probe(struct usb_interface *interface, const struct usb_device_ USB_MAJOR, dev->minor); exit: - kfree(get_version_reply); return retval; error: - kfree(get_version_reply); tower_delete(dev); return retval; } -/** +/* * tower_disconnect * * Called by the usb core when the device is removed from the system. |