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Date:   Sat,  8 Aug 2020 19:40:10 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Lu Wei <luwei32@...wei.com>, Hulk Robot <hulkci@...wei.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sasha Levin <sashal@...nel.org>,
        platform-driver-x86@...r.kernel.org
Subject: [PATCH AUTOSEL 4.14 11/14] platform/x86: intel-vbtn: Fix return value check in check_acpi_dev()

From: Lu Wei <luwei32@...wei.com>

[ Upstream commit 64dd4a5a7d214a07e3d9f40227ec30ac8ba8796e ]

In the function check_acpi_dev(), if it fails to create
platform device, the return value is ERR_PTR() or NULL.
Thus it must use IS_ERR_OR_NULL() to check return value.

Fixes: 332e081225fc ("intel-vbtn: new driver for Intel Virtual Button")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Lu Wei <luwei32@...wei.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/platform/x86/intel-vbtn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c
index 58c5ff36523ab..d7fa2b88d27ab 100644
--- a/drivers/platform/x86/intel-vbtn.c
+++ b/drivers/platform/x86/intel-vbtn.c
@@ -178,7 +178,7 @@ check_acpi_dev(acpi_handle handle, u32 lvl, void *context, void **rv)
 		return AE_OK;
 
 	if (acpi_match_device_ids(dev, ids) == 0)
-		if (acpi_create_platform_device(dev, NULL))
+		if (!IS_ERR_OR_NULL(acpi_create_platform_device(dev, NULL)))
 			dev_info(&dev->dev,
 				 "intel-vbtn: created platform device\n");
 
-- 
2.25.1

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