linux-kernel - [PATCH 4.19 188/422] nvmem: core: return error code instead of NULL from nvmem_device

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Message-Id: <20191119051410.688562851@linuxfoundation.org>
Date:   Tue, 19 Nov 2019 06:16:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Niklas Cassel <niklas.cassel@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 188/422] nvmem: core: return error code instead of NULL from nvmem_device_get

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

[ Upstream commit ca6ac25cecf0e740d7cc8e03e0ebbf8acbeca3df ]

nvmem_device_get() should return ERR_PTR() on error or valid pointer
on success, but one of the code path seems to return NULL, so fix it.

Reported-by: Niklas Cassel <niklas.cassel@...aro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvmem/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index d32eba11c000f..30c040786fde2 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -692,7 +692,7 @@ static struct nvmem_device *nvmem_find(const char *name)
 	d = bus_find_device_by_name(&nvmem_bus_type, NULL, name);
 
 	if (!d)
-		return NULL;
+		return ERR_PTR(-ENOENT);
 
 	return to_nvmem_device(d);
 }
-- 
2.20.1