linux-kernel - Re: [PATCH] mfd: Fix test of unsigned in twl4030_configure

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Date:	Wed, 16 Dec 2009 14:44:15 +0100
From:	Roel Kluin <roel.kluin@...il.com>
To:	Roel Kluin <roel.kluin@...il.com>
CC:	Samuel Ortiz <sameo@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, amit.kucheria@...durent.com
Subject: Re: [PATCH] mfd: Fix test of unsigned in twl4030_configure_resource()

devgroup is unsigned so the test did not work.

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
Found using coccinelle: http://coccinelle.lip6.fr/

see
vi arch/arm/mach-omap2/board-rx51-peripherals.c +512

Oops, missed some in previous patch.

Roel

diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c
index d423e0c..cc984a5 100644
--- a/drivers/mfd/twl4030-power.c
+++ b/drivers/mfd/twl4030-power.c
@@ -335,7 +335,7 @@ static int __init twl4030_configure_resource(struct twl4030_resconfig *rconfig)
 		return err;
 	}
 
-	if (rconfig->devgroup >= 0) {
+	if (rconfig->devgroup != -1) {
 		grp &= ~DEVGROUP_MASK;
 		grp |= rconfig->devgroup << DEVGROUP_SHIFT;
 		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
@@ -355,12 +355,12 @@ static int __init twl4030_configure_resource(struct twl4030_resconfig *rconfig)
 		return err;
 	}
 
-	if (rconfig->type >= 0) {
+	if (rconfig->type != -1) {
 		type &= ~TYPE_MASK;
 		type |= rconfig->type << TYPE_SHIFT;
 	}
 
-	if (rconfig->type2 >= 0) {
+	if (rconfig->type2 != -1) {
 		type &= ~TYPE2_MASK;
 		type |= rconfig->type2 << TYPE2_SHIFT;
 	}
--
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