diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/usb-skeleton.c | 43 |
1 files changed, 28 insertions, 15 deletions
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index ef8c877cdd4..b62f2bc064f 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -18,7 +18,7 @@ #include <linux/slab.h> #include <linux/module.h> #include <linux/kref.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/mutex.h> @@ -28,7 +28,7 @@ #define USB_SKEL_PRODUCT_ID 0xfff0 /* table of devices that work with this driver */ -static struct usb_device_id skel_table [] = { +static struct usb_device_id skel_table[] = { { USB_DEVICE(USB_SKEL_VENDOR_ID, USB_SKEL_PRODUCT_ID) }, { } /* Terminating entry */ }; @@ -94,7 +94,7 @@ static int skel_open(struct inode *inode, struct file *file) interface = usb_find_interface(&skel_driver, subminor); if (!interface) { - err ("%s - error, can't find device for minor %d", + err("%s - error, can't find device for minor %d", __func__, subminor); retval = -ENODEV; goto exit; @@ -190,7 +190,7 @@ static void skel_read_bulk_callback(struct urb *urb) spin_lock(&dev->err_lock); /* sync/async unlink faults aren't errors */ if (urb->status) { - if(!(urb->status == -ENOENT || + if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) err("%s - nonzero write bulk status received: %d", @@ -239,7 +239,8 @@ static int skel_do_read_io(struct usb_skel *dev, size_t count) return rv; } -static ssize_t skel_read(struct file *file, char *buffer, size_t count, loff_t *ppos) +static ssize_t skel_read(struct file *file, char *buffer, size_t count, + loff_t *ppos) { struct usb_skel *dev; int rv; @@ -299,7 +300,8 @@ retry: } /* errors must be reported */ - if ((rv = dev->errors) < 0) { + rv = dev->errors; + if (rv < 0) { /* any error is reported once */ dev->errors = 0; /* to preserve notifications about reset */ @@ -373,7 +375,7 @@ static void skel_write_bulk_callback(struct urb *urb) /* sync/async unlink faults aren't errors */ if (urb->status) { - if(!(urb->status == -ENOENT || + if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) err("%s - nonzero write bulk status received: %d", @@ -390,7 +392,8 @@ static void skel_write_bulk_callback(struct urb *urb) up(&dev->limit_sem); } -static ssize_t skel_write(struct file *file, const char *user_buffer, size_t count, loff_t *ppos) +static ssize_t skel_write(struct file *file, const char *user_buffer, + size_t count, loff_t *ppos) { struct usb_skel *dev; int retval = 0; @@ -404,7 +407,10 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou if (count == 0) goto exit; - /* limit the number of URBs in flight to stop a user from using up all RAM */ + /* + * limit the number of URBs in flight to stop a user from using up all + * RAM + */ if (!file->f_flags & O_NONBLOCK) { if (down_interruptible(&dev->limit_sem)) { retval = -ERESTARTSYS; @@ -418,7 +424,8 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou } spin_lock_irq(&dev->err_lock); - if ((retval = dev->errors) < 0) { + retval = dev->errors; + if (retval < 0) { /* any error is reported once */ dev->errors = 0; /* to preserve notifications about reset */ @@ -435,7 +442,8 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou goto error; } - buf = usb_buffer_alloc(dev->udev, writesize, GFP_KERNEL, &urb->transfer_dma); + buf = usb_buffer_alloc(dev->udev, writesize, GFP_KERNEL, + &urb->transfer_dma); if (!buf) { retval = -ENOMEM; goto error; @@ -465,11 +473,15 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou retval = usb_submit_urb(urb, GFP_KERNEL); mutex_unlock(&dev->io_mutex); if (retval) { - err("%s - failed submitting write urb, error %d", __func__, retval); + err("%s - failed submitting write urb, error %d", __func__, + retval); goto error_unanchor; } - /* release our reference to this urb, the USB core will eventually free it entirely */ + /* + * release our reference to this urb, the USB core will eventually free + * it entirely + */ usb_free_urb(urb); @@ -507,7 +519,8 @@ static struct usb_class_driver skel_class = { .minor_base = USB_SKEL_MINOR_BASE, }; -static int skel_probe(struct usb_interface *interface, const struct usb_device_id *id) +static int skel_probe(struct usb_interface *interface, + const struct usb_device_id *id) { struct usb_skel *dev; struct usb_host_interface *iface_desc; @@ -636,7 +649,7 @@ static int skel_suspend(struct usb_interface *intf, pm_message_t message) return 0; } -static int skel_resume (struct usb_interface *intf) +static int skel_resume(struct usb_interface *intf) { return 0; } |