linux-imx
Public
Source
committed 96d4f267e4057
57
anslcd_write( struct file * file, const char __user * buf, 58
58
size_t count, loff_t *ppos )59
59
{60
60
const char __user *p = buf;61
61
int i;62
62
63
63
#ifdef DEBUG64
64
printk(KERN_DEBUG "LCD: write\n");65
65
#endif66
66
67
-
if (!access_ok(VERIFY_READ, buf, count))67
+
if (!access_ok(buf, count))68
68
return -EFAULT;69
69
70
70
mutex_lock(&anslcd_mutex);71
71
for ( i = *ppos; count > 0; ++i, ++p, --count ) 72
72
{73
73
char c;74
74
__get_user(c, p);75
75
anslcd_write_byte_data( c );76
76
}77
77
mutex_unlock(&anslcd_mutex);