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authorStefan Achatz <erazor_de@users.sourceforge.net>2010-11-26 19:57:36 +0000
committerJiri Kosina <jkosina@suse.cz>2011-01-08 01:11:24 +0100
commitbd3a2b96631dd86b06dca96aef00790084a11e15 (patch)
treec9bd056bfcf5d227ccb6c772f6cd7abc9d7b6a33
parent5012aada506cb8b570e46579077c0ec5b82ebd5d (diff)
HID: roccat: declare meaning of pack pragma usage in driver headers
Using pack pragma to prevent padding bytes in binary data structures used for hardware communication. Explanation of these pragmas was requested. Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
-rw-r--r--drivers/hid/hid-roccat-kone.h3
-rw-r--r--drivers/hid/hid-roccat-pyra.h3
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/hid/hid-roccat-kone.h b/drivers/hid/hid-roccat-kone.h
index 130d6566ea8..11203a75b0f 100644
--- a/drivers/hid/hid-roccat-kone.h
+++ b/drivers/hid/hid-roccat-kone.h
@@ -14,6 +14,9 @@
#include <linux/types.h>
+/*
+ * Binary data structures used for hardware communication must have no padding.
+ */
#pragma pack(push)
#pragma pack(1)
diff --git a/drivers/hid/hid-roccat-pyra.h b/drivers/hid/hid-roccat-pyra.h
index 22f80a8f26f..ac5996e8817 100644
--- a/drivers/hid/hid-roccat-pyra.h
+++ b/drivers/hid/hid-roccat-pyra.h
@@ -14,6 +14,9 @@
#include <linux/types.h>
+/*
+ * Binary data structures used for hardware communication must have no padding.
+ */
#pragma pack(push)
#pragma pack(1)