From: Nipun Gupta <nipun.gupta@nxp.com>
To: <laurentiu.tudor@nxp.com>, <stuyoder@gmail.com>,
        <bharat.bhushan@nxp.com>, <gregkh@linuxfoundation.org>,
        <cakturk@gmail.com>, <bretth256@gmail.com>, <arnd@arndb.de>
CC: <linux-kernel@vger.kernel.org>, <devel@driverdev.osuosl.org>,
        Nipun Gupta <nipun.gupta@nxp.com>
Subject: [PATCH 2/2 v2] staging: fsl-mc: do not print error in case of defer probe error
Date: Mon, 11 Dec 2017 21:06:32 +0530
Message-ID: <1513006592-13110-2-git-send-email-nipun.gupta@nxp.com>
In-Reply-To: <1513006592-13110-1-git-send-email-nipun.gupta@nxp.com>
References: <1513006592-13110-1-git-send-email-nipun.gupta@nxp.com>
MIME-Version: 1.0
Content-Type: text/plain
SpamDiagnosticOutput: 1:99
SpamDiagnosticMetadata: NSPM
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Dec 2017 09:21:26.1177
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 6599c88d-3d6b-4f93-f528-08d540788ddb
X-MS-Exchange-CrossTenant-Id: 5afe0b00-7697-4969-b663-5eab37d5f47e
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=5afe0b00-7697-4969-b663-5eab37d5f47e;Ip=[192.88.168.50];Helo=[tx30smr01.am.freescale.net]
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR03MB2689
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 897
Lines: 26

Devices on MC bus can be deferred because of dependencies on other modules
(such as IOMMU). Those are not the actual errors; as probing is again
done by the kernel at later stages. So this patch avoids the error print
in such case.

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
---
 drivers/staging/fsl-mc/bus/fsl-mc-bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c b/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
index 409f2b9..10cee00 100644
--- a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
+++ b/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
@@ -171,7 +171,8 @@ static int fsl_mc_driver_probe(struct device *dev)
 
 	error = mc_drv->probe(mc_dev);
 	if (error < 0) {
-		dev_err(dev, "%s failed: %d\n", __func__, error);
+		if (error != -EPROBE_DEFER)
+			dev_err(dev, "%s failed: %d\n", __func__, error);
 		return error;
 	}
 
-- 
1.9.1