USB: iowarrior: fix misuse of return value of copy_to_user()
copy_to_user() returns number of not copied bytes, not error code.
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 2de49c8..bc88c79 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -542,7 +542,7 @@
retval = io_res;
else {
io_res = copy_to_user(user_buffer, buffer, dev->report_size);
- if (io_res < 0)
+ if (io_res)
retval = -EFAULT;
}
break;
@@ -574,7 +574,7 @@
}
io_res = copy_to_user((struct iowarrior_info __user *)arg, &info,
sizeof(struct iowarrior_info));
- if (io_res < 0)
+ if (io_res)
retval = -EFAULT;
break;
}