i2c-hid: properly terminate i2c_hid_dmi_desc_override_table[] array

torvalds · torvalds · commit b59dfdaef173 · 2018-10-27T09:10:48.000-07:00
Commit 9ee3e06 ("HID: i2c-hid: override HID descriptors for certain devices") added a new dmi_system_id quirk table to override certain HID report descriptors for some systems that lack them. But the table wasn't properly terminated, causing the dmi matching to walk off into la-la-land, and starting to treat random data as dmi descriptor pointers, causing boot-time oopses if you were at all unlucky. Terminate the array. We really should have some way to just statically check that arrays that should be terminated by an empty entry actually are so. But the HID people really should have caught this themselves, rather than have me deal with an oops during the merge window. Tssk, tssk. Cc: Julian Sax <jsbc@gmx.de> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c b/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c
@@ -337,7 +337,8 @@ static const struct dmi_system_id i2c_hid_dmi_desc_override_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "FlexBook edge11 - M-FBE11"),
 		},
 		.driver_data = (void *)&sipodev_desc
-	}
+	},
+	{ }	/* Terminate list */
 };
 
 
