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received-spf: None (protection.outlook.com: microchip.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: TfSvzhP7uuyViaNsw+6tn1jtsAdDuPiWwD6D2i6BoxkUtZyamTNJ1ZJ/JQp7ZgIDRV9YovCf0yXwZUb7JD2FGg7P9RGxwpp+7mCI2h498M6M3SLQ6elf0EjNnDSm26iLHK6kqmYDXWfZK6WaD361mzwRz78L+GXEU98Z0knp2fueo9sCYAwm7Xmu5NZtIp/cv7fksisfVLJcSW3/hKDXb+3pHQ7pmi1l/vi4f+TBd1/H8tj1oV0zLsGPcS9ggk1LTwilQkwjJSIymRCkCmUYOdeZNZv8Hewfm5pMZ5LrQzn+mP9Ble8nrd4ajh7dZhMogsa8zxBTdu1iCjJgsX63s7nUXMul2ZRAWd36dKdP3QE= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 983f6ac8-7593-4a4a-5490-08d6430fda42 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Nov 2018 11:14:28.9118 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR11MB0647 X-OriginatorOrg: microchip.com Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Check at91_shdwc before continuing with probe since we want only one instan= ce of this driver. Inspired from commit 9f1e44774be5 ("power: reset: at91-powerof= f: do not procede if at91_shdwc is allocated"). Signed-off-by: Claudiu Beznea --- drivers/power/reset/at91-poweroff.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/power/reset/at91-poweroff.c b/drivers/power/reset/at91= -poweroff.c index 48661e04a3de..e75d8f0f0526 100644 --- a/drivers/power/reset/at91-poweroff.c +++ b/drivers/power/reset/at91-poweroff.c @@ -160,6 +160,9 @@ static int __init at91_poweroff_probe(struct platform_d= evice *pdev) u32 ddr_type; int ret; =20 + if (at91_shdwc) + return -EBUSY; + at91_shdwc =3D devm_kzalloc(&pdev->dev, sizeof(*at91_shdwc), GFP_KERNEL); if (!at91_shdwc) return -ENOMEM; --=20 2.7.4