Loading drivers/usb/usb-skeleton.c +22 −14 Original line number Diff line number Diff line Loading @@ -93,7 +93,7 @@ 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", pr_err("%s - error, can't find device for minor %d\n", __func__, subminor); retval = -ENODEV; goto exit; Loading Loading @@ -179,7 +179,8 @@ static void skel_read_bulk_callback(struct urb *urb) if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) err("%s - nonzero write bulk status received: %d", dev_err(&dev->interface->dev, "%s - nonzero write bulk status received: %d\n", __func__, urb->status); dev->errors = urb->status; Loading Loading @@ -213,7 +214,8 @@ static int skel_do_read_io(struct usb_skel *dev, size_t count) /* do it */ rv = usb_submit_urb(dev->bulk_in_urb, GFP_KERNEL); if (rv < 0) { err("%s - failed submitting read urb, error %d", dev_err(&dev->interface->dev, "%s - failed submitting read urb, error %d\n", __func__, rv); dev->bulk_in_filled = 0; rv = (rv == -ENOMEM) ? rv : -EIO; Loading Loading @@ -364,7 +366,8 @@ static void skel_write_bulk_callback(struct urb *urb) if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) err("%s - nonzero write bulk status received: %d", dev_err(&dev->interface->dev, "%s - nonzero write bulk status received: %d\n", __func__, urb->status); spin_lock(&dev->err_lock); Loading Loading @@ -459,8 +462,9 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, retval = usb_submit_urb(urb, GFP_KERNEL); mutex_unlock(&dev->io_mutex); if (retval) { err("%s - failed submitting write urb, error %d", __func__, retval); dev_err(&dev->interface->dev, "%s - failed submitting write urb, error %d\n", __func__, retval); goto error_unanchor; } Loading Loading @@ -519,7 +523,7 @@ static int skel_probe(struct usb_interface *interface, /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) { err("Out of memory"); dev_err(&interface->dev, "Out of memory\n"); goto error; } kref_init(&dev->kref); Loading @@ -546,12 +550,14 @@ static int skel_probe(struct usb_interface *interface, dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!dev->bulk_in_buffer) { err("Could not allocate bulk_in_buffer"); dev_err(&interface->dev, "Could not allocate bulk_in_buffer\n"); goto error; } dev->bulk_in_urb = usb_alloc_urb(0, GFP_KERNEL); if (!dev->bulk_in_urb) { err("Could not allocate bulk_in_urb"); dev_err(&interface->dev, "Could not allocate bulk_in_urb\n"); goto error; } } Loading @@ -563,7 +569,8 @@ static int skel_probe(struct usb_interface *interface, } } if (!(dev->bulk_in_endpointAddr && dev->bulk_out_endpointAddr)) { err("Could not find both bulk-in and bulk-out endpoints"); dev_err(&interface->dev, "Could not find both bulk-in and bulk-out endpoints\n"); goto error; } Loading @@ -574,7 +581,8 @@ static int skel_probe(struct usb_interface *interface, retval = usb_register_dev(interface, &skel_class); if (retval) { /* something prevented us from registering this driver */ err("Not able to get a minor for this device."); dev_err(&interface->dev, "Not able to get a minor for this device.\n"); usb_set_intfdata(interface, NULL); goto error; } Loading Loading
drivers/usb/usb-skeleton.c +22 −14 Original line number Diff line number Diff line Loading @@ -93,7 +93,7 @@ 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", pr_err("%s - error, can't find device for minor %d\n", __func__, subminor); retval = -ENODEV; goto exit; Loading Loading @@ -179,7 +179,8 @@ static void skel_read_bulk_callback(struct urb *urb) if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) err("%s - nonzero write bulk status received: %d", dev_err(&dev->interface->dev, "%s - nonzero write bulk status received: %d\n", __func__, urb->status); dev->errors = urb->status; Loading Loading @@ -213,7 +214,8 @@ static int skel_do_read_io(struct usb_skel *dev, size_t count) /* do it */ rv = usb_submit_urb(dev->bulk_in_urb, GFP_KERNEL); if (rv < 0) { err("%s - failed submitting read urb, error %d", dev_err(&dev->interface->dev, "%s - failed submitting read urb, error %d\n", __func__, rv); dev->bulk_in_filled = 0; rv = (rv == -ENOMEM) ? rv : -EIO; Loading Loading @@ -364,7 +366,8 @@ static void skel_write_bulk_callback(struct urb *urb) if (!(urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) err("%s - nonzero write bulk status received: %d", dev_err(&dev->interface->dev, "%s - nonzero write bulk status received: %d\n", __func__, urb->status); spin_lock(&dev->err_lock); Loading Loading @@ -459,8 +462,9 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, retval = usb_submit_urb(urb, GFP_KERNEL); mutex_unlock(&dev->io_mutex); if (retval) { err("%s - failed submitting write urb, error %d", __func__, retval); dev_err(&dev->interface->dev, "%s - failed submitting write urb, error %d\n", __func__, retval); goto error_unanchor; } Loading Loading @@ -519,7 +523,7 @@ static int skel_probe(struct usb_interface *interface, /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) { err("Out of memory"); dev_err(&interface->dev, "Out of memory\n"); goto error; } kref_init(&dev->kref); Loading @@ -546,12 +550,14 @@ static int skel_probe(struct usb_interface *interface, dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!dev->bulk_in_buffer) { err("Could not allocate bulk_in_buffer"); dev_err(&interface->dev, "Could not allocate bulk_in_buffer\n"); goto error; } dev->bulk_in_urb = usb_alloc_urb(0, GFP_KERNEL); if (!dev->bulk_in_urb) { err("Could not allocate bulk_in_urb"); dev_err(&interface->dev, "Could not allocate bulk_in_urb\n"); goto error; } } Loading @@ -563,7 +569,8 @@ static int skel_probe(struct usb_interface *interface, } } if (!(dev->bulk_in_endpointAddr && dev->bulk_out_endpointAddr)) { err("Could not find both bulk-in and bulk-out endpoints"); dev_err(&interface->dev, "Could not find both bulk-in and bulk-out endpoints\n"); goto error; } Loading @@ -574,7 +581,8 @@ static int skel_probe(struct usb_interface *interface, retval = usb_register_dev(interface, &skel_class); if (retval) { /* something prevented us from registering this driver */ err("Not able to get a minor for this device."); dev_err(&interface->dev, "Not able to get a minor for this device.\n"); usb_set_intfdata(interface, NULL); goto error; } Loading