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path: root/drivers/hid/hidraw.c
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Diffstat (limited to 'drivers/hid/hidraw.c')
-rw-r--r--drivers/hid/hidraw.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 7685ae6808c..975edd88a3d 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -265,6 +265,34 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
265 break; 265 break;
266 } 266 }
267 default: 267 default:
268 {
269 struct hid_device *hid = dev->hid;
270 if (_IOC_TYPE(cmd) != 'H' || _IOC_DIR(cmd) != _IOC_READ)
271 return -EINVAL;
272
273 if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWNAME(0))) {
274 int len;
275 if (!hid->name)
276 return 0;
277 len = strlen(hid->name) + 1;
278 if (len > _IOC_SIZE(cmd))
279 len = _IOC_SIZE(cmd);
280 return copy_to_user(user_arg, hid->name, len) ?
281 -EFAULT : len;
282 }
283
284 if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWPHYS(0))) {
285 int len;
286 if (!hid->phys)
287 return 0;
288 len = strlen(hid->phys) + 1;
289 if (len > _IOC_SIZE(cmd))
290 len = _IOC_SIZE(cmd);
291 return copy_to_user(user_arg, hid->phys, len) ?
292 -EFAULT : len;
293 }
294 }
295
268 ret = -ENOTTY; 296 ret = -ENOTTY;
269 } 297 }
270 unlock_kernel(); 298 unlock_kernel();