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Message-ID: <1290801456.18750.164.camel@neuromancer> Date: Fri, 26 Nov 2010 20:57:36 +0100 From: Stefan Achatz <erazor_de@...rs.sourceforge.net> To: Randy Dunlap <rdunlap@...otime.net>, Greg Kroah-Hartman <gregkh@...e.de>, Jiri Kosina <jkosina@...e.cz>, Stefan Achatz <erazor_de@...rs.sourceforge.net>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-input@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH 3/5] HID: roccat: declaring 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@...rs.sourceforge.net> --- drivers/hid/hid-roccat-kone.h | 3 +++ drivers/hid/hid-roccat-pyra.h | 3 +++ 2 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-roccat-kone.h b/drivers/hid/hid-roccat-kone.h index 130d656..11203a7 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 22f80a8..ac5996e 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) -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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