aboutsummaryrefslogtreecommitdiff
path: root/drivers/hid
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-core.c10
-rw-r--r--drivers/hid/hidraw.c46
-rw-r--r--drivers/hid/usbhid/hiddev.c14
3 files changed, 39 insertions, 31 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index f43d6d3cf2f..426ac5add58 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -780,7 +780,7 @@ static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
*/
static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
{
- __le64 x;
+ u64 x;
u64 m = (1ULL << n) - 1;
if (n > 32)
@@ -796,10 +796,10 @@ static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u3
report += offset >> 3;
offset &= 7;
- x = get_unaligned((__le64 *)report);
- x &= cpu_to_le64(~(m << offset));
- x |= cpu_to_le64(((u64) value) << offset);
- put_unaligned(x, (__le64 *) report);
+ x = get_unaligned_le64(report);
+ x &= ~(m << offset);
+ x |= ((u64)value) << offset;
+ put_unaligned_le64(x, report);
}
/*
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 8ecd7752510..c40f0403eda 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -105,6 +105,7 @@ out:
static ssize_t hidraw_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
unsigned int minor = iminor(file->f_path.dentry->d_inode);
+ /* FIXME: What stops hidraw_table going NULL */
struct hid_device *dev = hidraw_table[minor]->hid;
__u8 *buf;
int ret = 0;
@@ -216,35 +217,38 @@ static int hidraw_release(struct inode * inode, struct file * file)
return 0;
}
-static int hidraw_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long hidraw_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
+ struct inode *inode = file->f_path.dentry->d_inode;
unsigned int minor = iminor(inode);
+ long ret = 0;
+ /* FIXME: What stops hidraw_table going NULL */
struct hidraw *dev = hidraw_table[minor];
void __user *user_arg = (void __user*) arg;
+ lock_kernel();
switch (cmd) {
case HIDIOCGRDESCSIZE:
if (put_user(dev->hid->rsize, (int __user *)arg))
- return -EFAULT;
- return 0;
+ ret = -EFAULT;
+ break;
case HIDIOCGRDESC:
{
__u32 len;
if (get_user(len, (int __user *)arg))
- return -EFAULT;
-
- if (len > HID_MAX_DESCRIPTOR_SIZE - 1)
- return -EINVAL;
-
- if (copy_to_user(user_arg + offsetof(
- struct hidraw_report_descriptor,
- value[0]),
- dev->hid->rdesc,
- min(dev->hid->rsize, len)))
- return -EFAULT;
- return 0;
+ ret = -EFAULT;
+ else if (len > HID_MAX_DESCRIPTOR_SIZE - 1)
+ ret = -EINVAL;
+ else if (copy_to_user(user_arg + offsetof(
+ struct hidraw_report_descriptor,
+ value[0]),
+ dev->hid->rdesc,
+ min(dev->hid->rsize, len)))
+ ret = -EFAULT;
+ break;
}
case HIDIOCGRAWINFO:
{
@@ -254,15 +258,13 @@ static int hidraw_ioctl(struct inode *inode, struct file *file, unsigned int cmd
dinfo.vendor = dev->hid->vendor;
dinfo.product = dev->hid->product;
if (copy_to_user(user_arg, &dinfo, sizeof(dinfo)))
- return -EFAULT;
-
- return 0;
+ ret = -EFAULT;
+ break;
}
default:
- printk(KERN_EMERG "hidraw: unsupported ioctl() %x\n",
- cmd);
+ ret = -ENOTTY;
}
- return -EINVAL;
+ return ret;
}
static const struct file_operations hidraw_ops = {
@@ -272,7 +274,7 @@ static const struct file_operations hidraw_ops = {
.poll = hidraw_poll,
.open = hidraw_open,
.release = hidraw_release,
- .ioctl = hidraw_ioctl,
+ .unlocked_ioctl = hidraw_ioctl,
};
void hidraw_report_event(struct hid_device *hid, u8 *data, int len)
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 95cc192bc7a..842e9edb888 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -406,6 +406,7 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
uref_multi = kmalloc(sizeof(struct hiddev_usage_ref_multi), GFP_KERNEL);
if (!uref_multi)
return -ENOMEM;
+ lock_kernel();
uref = &uref_multi->uref;
if (cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES) {
if (copy_from_user(uref_multi, user_arg,
@@ -501,12 +502,15 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
}
goodreturn:
+ unlock_kernel();
kfree(uref_multi);
return 0;
fault:
+ unlock_kernel();
kfree(uref_multi);
return -EFAULT;
inval:
+ unlock_kernel();
kfree(uref_multi);
return -EINVAL;
}
@@ -540,7 +544,7 @@ static noinline int hiddev_ioctl_string(struct hiddev *hiddev, unsigned int cmd,
return len;
}
-static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct hiddev_list *list = file->private_data;
struct hiddev *hiddev = list->hiddev;
@@ -555,7 +559,10 @@ static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd
struct usbhid_device *usbhid = hid->driver_data;
void __user *user_arg = (void __user *)arg;
int i;
+
+ /* Called without BKL by compat methods so no BKL taken */
+ /* FIXME: Who or what stop this racing with a disconnect ?? */
if (!hiddev->exist)
return -EIO;
@@ -756,8 +763,7 @@ static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd
#ifdef CONFIG_COMPAT
static long hiddev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
- struct inode *inode = file->f_path.dentry->d_inode;
- return hiddev_ioctl(inode, file, cmd, (unsigned long)compat_ptr(arg));
+ return hiddev_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
}
#endif
@@ -768,7 +774,7 @@ static const struct file_operations hiddev_fops = {
.poll = hiddev_poll,
.open = hiddev_open,
.release = hiddev_release,
- .ioctl = hiddev_ioctl,
+ .unlocked_ioctl = hiddev_ioctl,
.fasync = hiddev_fasync,
#ifdef CONFIG_COMPAT
.compat_ioctl = hiddev_compat_ioctl,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 00:22:58 +0000