From: Stefan Achatz <erazor_de@users.sourceforge.net>
To: Jiri Kosina <jkosina@suse.cz>
Cc: "Randy Dunlap" <rdunlap@xenotime.net>,
"Bruno Prémont" <bonbons@linux-vserver.org>,
"Stephane Chatty" <chatty@enac.fr>,
"Don Prince" <dhprince-devel@yahoo.co.uk>,
"Dmitry Torokhov" <dtor@mail.ru>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-input@vger.kernel.org
Subject: [PATCH 2/3] HID: roccat: declaring meaning of pack pragma usage in koneplus driver
Date: Sat, 06 Nov 2010 19:52:46 +0100 [thread overview]
Message-ID: <1289069566.5166.3.camel@neuromancer> (raw)
In-Reply-To: <alpine.LNX.2.00.1011051400250.15851@pobox.suse.cz>
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>
---
drivers/hid/hid-roccat-koneplus.h | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/hid/hid-roccat-koneplus.h b/drivers/hid/hid-roccat-koneplus.h
index bf750fa..c25a799 100644
--- a/drivers/hid/hid-roccat-koneplus.h
+++ b/drivers/hid/hid-roccat-koneplus.h
@@ -14,6 +14,9 @@
#include <linux/types.h>
+/*
+ * Binary data structures for communication with hardware must have no padding.
+ */
#pragma pack(push)
#pragma pack(1)
--
1.7.2.3
next prev parent reply other threads:[~2010-11-06 18:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-24 17:57 [PATCH] HID: roccat: Add support for Roccat Kone[+] Stefan Achatz
2010-11-04 18:25 ` Jiri Kosina
2010-11-05 17:42 ` Stefan Achatz
2010-11-05 18:01 ` Jiri Kosina
2010-11-06 18:51 ` [PATCH 1/3] HID: roccat: Reducing number of functions in kone and pyra drivers Stefan Achatz
2010-11-06 18:52 ` Stefan Achatz [this message]
2010-11-06 18:53 ` [PATCH 3/3] HID: roccat: declaring meaning of pack pragma usage in kone and pyra driver Stefan Achatz
2010-11-12 19:16 ` [PATCH] HID: roccat: Add support for Roccat Kone[+] Stefan Achatz
2010-11-05 17:53 ` [PATCH] HID: roccat: Using bin-attribute->private to reduce code duplication Stefan Achatz
2010-11-11 9:00 ` [PATCH] HID: roccat: Add support for Roccat Kone[+] Dmitry Torokhov
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