diff options
| -rw-r--r-- | drivers/misc/eeprom/idt_89hpesx.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c index 3e4a594c110b..6a456645efb0 100644 --- a/drivers/misc/eeprom/idt_89hpesx.c +++ b/drivers/misc/eeprom/idt_89hpesx.c @@ -940,14 +940,18 @@ static ssize_t idt_dbgfs_csr_write(struct file *filep, const char __user *ubuf, u32 csraddr, csrval; char *buf; + if (*offp) + return 0; + /* Copy data from User-space */ buf = kmalloc(count + 1, GFP_KERNEL); if (!buf) return -ENOMEM; - ret = simple_write_to_buffer(buf, count, offp, ubuf, count); - if (ret < 0) + if (copy_from_user(buf, ubuf, count)) { + ret = -EFAULT; goto free_buf; + } buf[count] = 0; /* Find position of colon in the buffer */ |