From: Simon Glass <sjg@chromium.org>
Date: Sat, 12 Mar 2016 05:06:49 +0000 (-0700)
Subject: syscon: Avoid returning a device on failure
X-Git-Tag: v2016.05-rc1~302
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=532f2435cfe94e54e01ba68572daa853d7752afa;p=platform%2Fkernel%2Fu-boot.git

syscon: Avoid returning a device on failure

If the device cannot be probed, syscon_get_by_driver_data() will still
return a useful value in its devp parameter. Ensure that it returns NULL
instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---

diff --git a/drivers/core/syscon-uclass.c b/drivers/core/syscon-uclass.c
index a0666d0..e03f46a 100644
--- a/drivers/core/syscon-uclass.c
+++ b/drivers/core/syscon-uclass.c
@@ -38,6 +38,7 @@ int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp)
 	struct uclass *uc;
 	int ret;
 
+	*devp = NULL;
 	ret = uclass_get(UCLASS_SYSCON, &uc);
 	if (ret)
 		return ret;