linux-kernel - [PATCH 3.2 144/149] hwmon: (applesmc) Silence uninitialized warnings

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Message-ID: <lsq.1382345188.843886656@decadent.org.uk>
Date:	Mon, 21 Oct 2013 09:46:28 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Henrik Rydberg" <rydberg@...omail.se>,
	"Guenter Roeck" <guenter.roeck@...csson.com>
Subject: [PATCH 3.2 144/149] hwmon: (applesmc) Silence uninitialized warnings

3.2.52-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Henrik Rydberg <rydberg@...omail.se>

commit 0fc86eca1b338d06ec500b34ef7def79c32b602b upstream.

Some error paths do not set a result, leading to the (false)
assumption that the value may be used uninitialized. Set results for
those paths as well.

Signed-off-by: Henrik Rydberg <rydberg@...omail.se>
Signed-off-by: Guenter Roeck <guenter.roeck@...csson.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/hwmon/applesmc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index 1b13085..f082e48 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -344,8 +344,10 @@ static int applesmc_get_lower_bound(unsigned int *lo, const char *key)
 	while (begin != end) {
 		int middle = begin + (end - begin) / 2;
 		entry = applesmc_get_entry_by_index(middle);
-		if (IS_ERR(entry))
+		if (IS_ERR(entry)) {
+			*lo = 0;
 			return PTR_ERR(entry);
+		}
 		if (strcmp(entry->key, key) < 0)
 			begin = middle + 1;
 		else
@@ -364,8 +366,10 @@ static int applesmc_get_upper_bound(unsigned int *hi, const char *key)
 	while (begin != end) {
 		int middle = begin + (end - begin) / 2;
 		entry = applesmc_get_entry_by_index(middle);
-		if (IS_ERR(entry))
+		if (IS_ERR(entry)) {
+			*hi = smcreg.key_count;
 			return PTR_ERR(entry);
+		}
 		if (strcmp(key, entry->key) < 0)
 			end = middle;
 		else

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