platform/x86: dell-wmi: don't check length returned

This is intended to be variable and provided by the platform.
Some platforms this year will be adopting a 32k WMI buffer, so don't
complain when encountering those platforms or any other future changes.

Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Reviewed-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>

diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index b2bd396acac5f7eb1761db3addd28f152af66ad9..da4f629d0831b08888a1766405d03e6cb737d219 100644 (file)
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -624,7 +624,7 @@ static void dell_wmi_input_destroy(struct wmi_device *wdev)
  * Vendor Signature          0       4    "DELL"
  * Object Signature          4       4    " WMI"
  * WMI Interface Version     8       4    <version>
- * WMI buffer length        12       4    4096
+ * WMI buffer length        12       4    <length>
  */
 static int dell_wmi_check_descriptor_buffer(struct wmi_device *wdev)
 {
@@ -674,10 +674,6 @@ static int dell_wmi_check_descriptor_buffer(struct wmi_device *wdev)
                dev_warn(&wdev->dev, "Dell descriptor buffer has unknown version (%lu)\n",
                        (unsigned long) buffer[2]);
 
-       if (buffer[3] != 4096)
-               dev_warn(&wdev->dev, "Dell descriptor buffer has invalid buffer length (%d)\n",
-                       buffer[3]);
-
        priv->interface_version = buffer[2];
        ret = 0;