linux-kernel - [PATCH 3/3] Staging: olpc_dcon: more big endian conformity

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>] [day] [month] [year] [list]

Date:	Thu, 15 Aug 2013 21:40:01 +0200
From:	Jens Frederich <jfrederich@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	dsd@...top.org, jon.nettleton@...il.com,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Jens Frederich <jfrederich@...il.com>
Subject: [PATCH 3/3] Staging: olpc_dcon: more big endian conformity

Using an int which is casted to unsigned char as inbuf is messy.
The code won't work on big endian systems.  The patch should fix
this.

Signed-off-by: Jens Frederich <jfrederich@...il.com>

diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c
index 5ca4fa4..198595e 100644
--- a/drivers/staging/olpc_dcon/olpc_dcon.c
+++ b/drivers/staging/olpc_dcon/olpc_dcon.c
@@ -122,12 +122,13 @@ err:
 static int dcon_bus_stabilize(struct dcon_priv *dcon, int is_powered_down)
 {
 	unsigned long timeout;
+	u8 pm;
 	int x;
 
 power_up:
 	if (is_powered_down) {
-		x = 1;
-		x = olpc_ec_cmd(EC_DCON_POWER_MODE, (u8 *)&x, 1, NULL, 0);
+		pm = 1;
+		x = olpc_ec_cmd(EC_DCON_POWER_MODE, &pm, 1, NULL, 0);
 		if (x) {
 			pr_warn("unable to force dcon to power up: %d!\n", x);
 			return x;
@@ -144,8 +145,8 @@ power_up:
 	if (x < 0) {
 		pr_err("unable to stabilize dcon's smbus, reasserting power and praying.\n");
 		BUG_ON(olpc_board_at_least(olpc_board(0xc2)));
-		x = 0;
-		olpc_ec_cmd(EC_DCON_POWER_MODE, (u8 *)&x, 1, NULL, 0);
+		pm = 0;
+		olpc_ec_cmd(EC_DCON_POWER_MODE, &pm, 1, NULL, 0);
 		msleep(100);
 		is_powered_down = 1;
 		goto power_up;	/* argh, stupid hardware.. */
@@ -208,8 +209,8 @@ static void dcon_sleep(struct dcon_priv *dcon, bool sleep)
 		return;
 
 	if (sleep) {
-		x = 0;
-		x = olpc_ec_cmd(EC_DCON_POWER_MODE, (u8 *)&x, 1, NULL, 0);
+		u8 pm = 0;
+		x = olpc_ec_cmd(EC_DCON_POWER_MODE, &pm, 1, NULL, 0);
 		if (x)
 			pr_warn("unable to force dcon to power down: %d!\n", x);
 		else
-- 
1.7.9.5

--
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/