diff options
Diffstat (limited to 'drivers/hid/usbhid/hiddev.c')
| -rw-r--r-- | drivers/hid/usbhid/hiddev.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index 4ef02b269a7..2f1ddca6f2e 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -34,6 +34,7 @@ #include <linux/hid.h> #include <linux/hiddev.h> #include <linux/compat.h> +#include <linux/vmalloc.h> #include "usbhid.h" #ifdef CONFIG_USB_DYNAMIC_MINORS @@ -250,13 +251,13 @@ static int hiddev_release(struct inode * inode, struct file * file) } else { mutex_unlock(&list->hiddev->existancelock); kfree(list->hiddev); - kfree(list); + vfree(list); return 0; } } mutex_unlock(&list->hiddev->existancelock); - kfree(list); + vfree(list); return 0; } @@ -278,7 +279,7 @@ static int hiddev_open(struct inode *inode, struct file *file) hid = usb_get_intfdata(intf); hiddev = hid->hiddev; - if (!(list = kzalloc(sizeof(struct hiddev_list), GFP_KERNEL))) + if (!(list = vzalloc(sizeof(struct hiddev_list)))) return -ENOMEM; mutex_init(&list->thread_lock); list->hiddev = hiddev; @@ -322,7 +323,7 @@ bail_unlock: mutex_unlock(&hiddev->existancelock); bail: file->private_data = NULL; - kfree(list); + vfree(list); return res; } @@ -360,10 +361,6 @@ static ssize_t hiddev_read(struct file * file, char __user * buffer, size_t coun prepare_to_wait(&list->hiddev->wait, &wait, TASK_INTERRUPTIBLE); while (list->head == list->tail) { - if (file->f_flags & O_NONBLOCK) { - retval = -EAGAIN; - break; - } if (signal_pending(current)) { retval = -ERESTARTSYS; break; @@ -372,6 +369,10 @@ static ssize_t hiddev_read(struct file * file, char __user * buffer, size_t coun retval = -EIO; break; } + if (file->f_flags & O_NONBLOCK) { + retval = -EAGAIN; + break; + } /* let O_NONBLOCK tasks run */ mutex_unlock(&list->thread_lock); @@ -624,7 +625,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; case HIDIOCAPPLICATION: - if (arg < 0 || arg >= hid->maxapplication) + if (arg >= hid->maxapplication) break; for (i = 0; i < hid->maxcollection; i++) @@ -704,8 +705,8 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (report == NULL) break; - usbhid_submit_report(hid, report, USB_DIR_IN); - usbhid_wait_io(hid); + hid_hw_request(hid, report, HID_REQ_GET_REPORT); + hid_hw_wait(hid); r = 0; break; @@ -723,8 +724,8 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (report == NULL) break; - usbhid_submit_report(hid, report, USB_DIR_OUT); - usbhid_wait_io(hid); + hid_hw_request(hid, report, HID_REQ_SET_REPORT); + hid_hw_wait(hid); r = 0; break; @@ -859,7 +860,7 @@ static const struct file_operations hiddev_fops = { .llseek = noop_llseek, }; -static char *hiddev_devnode(struct device *dev, mode_t *mode) +static char *hiddev_devnode(struct device *dev, umode_t *mode) { return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev)); } @@ -922,11 +923,11 @@ void hiddev_disconnect(struct hid_device *hid) struct hiddev *hiddev = hid->hiddev; struct usbhid_device *usbhid = hid->driver_data; + usb_deregister_dev(usbhid->intf, &hiddev_class); + mutex_lock(&hiddev->existancelock); hiddev->exist = 0; - usb_deregister_dev(usbhid->intf, &hiddev_class); - if (hiddev->open) { mutex_unlock(&hiddev->existancelock); usbhid_close(hiddev->hid); |