linux-kernel - [PATCH 22/97] USB: Fix a bug on appledisplay.c regarding signedness

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1262651630-7354-22-git-send-email-gregkh@suse.de>
Date:	Mon,  4 Jan 2010 16:32:35 -0800
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, pancho horrillo <pancho@...cho.name>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 22/97] USB: Fix a bug on appledisplay.c regarding signedness

From: pancho horrillo <pancho@...cho.name>

commit 37e9066b2f85480d99d3795373f5ef0b00ac1189 upstream.

brightness status is reported by the Apple Cinema Displays as an
'unsigned char' (u8) value, but the code used 'char' instead.

Note that he driver was developed on the PowerPC architecture,
where the two types are synonymous, which is not always the case.

Fixed that.  Otherwise the driver will interpret brightness
levels > 127 as negative, and fail to load.

Signed-off-by: pancho horrillo <pancho@...cho.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/usb/misc/appledisplay.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
index 1d8e39a..62ff5e7 100644
--- a/drivers/usb/misc/appledisplay.c
+++ b/drivers/usb/misc/appledisplay.c
@@ -72,8 +72,8 @@ struct appledisplay {
 	struct usb_device *udev;	/* usb device */
 	struct urb *urb;		/* usb request block */
 	struct backlight_device *bd;	/* backlight device */
-	char *urbdata;			/* interrupt URB data buffer */
-	char *msgdata;			/* control message data buffer */
+	u8 *urbdata;			/* interrupt URB data buffer */
+	u8 *msgdata;			/* control message data buffer */
 
 	struct delayed_work work;
 	int button_pressed;
-- 
1.6.6

--
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/