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[PATCH 4.4 093/210] staging: android: ion_test: fix check of platform_device_register_simple() error code

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  [PATCH 4.4 093/210] staging: android: ion_test: fix check of platform_device_register_simple() error code Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-04-10 22:10 +0200

#1375156 — [PATCH 4.4 093/210] staging: android: ion_test: fix check of platform_device_register_simple() error code

4.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Vladimir Zapolskiy <vz@mleia.com>

commit ccbc2a9e7878ff09bcaed4893c2a2d3adbb797e2 upstream.

On error platform_device_register_simple() returns ERR_PTR() value,
check for NULL always fails. The change corrects the check itself and
propagates the returned error upwards.

Fixes: 81fb0b901397 ("staging: android: ion_test: unregister the platform device")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/staging/android/ion/ion_test.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/staging/android/ion/ion_test.c
+++ b/drivers/staging/android/ion/ion_test.c
@@ -285,8 +285,8 @@ static int __init ion_test_init(void)
 {
 	ion_test_pdev = platform_device_register_simple("ion-test",
 							-1, NULL, 0);
-	if (!ion_test_pdev)
-		return -ENODEV;
+	if (IS_ERR(ion_test_pdev))
+		return PTR_ERR(ion_test_pdev);
 
 	return platform_driver_probe(&ion_test_platform_driver, ion_test_probe);
 }

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