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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.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 47d70c523d93..a3866b5c0c43 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -109,6 +109,12 @@ static ssize_t hidraw_write(struct file *file, const char __user *buffer, size_t
109 int ret = 0; 109 int ret = 0;
110 110
111 mutex_lock(&minors_lock); 111 mutex_lock(&minors_lock);
112
113 if (!hidraw_table[minor]) {
114 ret = -ENODEV;
115 goto out;
116 }
117
112 dev = hidraw_table[minor]->hid; 118 dev = hidraw_table[minor]->hid;
113 119
114 if (!dev->hid_output_raw_report) { 120 if (!dev->hid_output_raw_report) {
@@ -244,6 +250,10 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
244 250
245 mutex_lock(&minors_lock); 251 mutex_lock(&minors_lock);
246 dev = hidraw_table[minor]; 252 dev = hidraw_table[minor];
253 if (!dev) {
254 ret = -ENODEV;
255 goto out;
256 }
247 257
248 switch (cmd) { 258 switch (cmd) {
249 case HIDIOCGRDESCSIZE: 259 case HIDIOCGRDESCSIZE:
@@ -317,6 +327,7 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
317 327
318 ret = -ENOTTY; 328 ret = -ENOTTY;
319 } 329 }
330out:
320 mutex_unlock(&minors_lock); 331 mutex_unlock(&minors_lock);
321 return ret; 332 return ret;
322} 333}