[PATCH 05/14] mtd: lpddr2_nvm: Warn about failure to unregister mtd device - Uwe Kleine-König

From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>
Cc: kernel@pengutronix.de, linux-mtd@lists.infradead.org
Subject: [PATCH 05/14] mtd: lpddr2_nvm: Warn about failure to unregister mtd device
Date: Fri,  3 Jun 2022 23:07:49 +0200	[thread overview]
Message-ID: <20220603210758.148493-6-u.kleine-koenig@pengutronix.de> (raw)
In-Reply-To: <20220603210758.148493-1-u.kleine-koenig@pengutronix.de>

mtd_device_unregister() shouldn't fail. Wail loudly if it does anyhow.

This matches how other drivers (e.g. nand/raw/nandsim.c) use
mtd_device_unregister().

By returning 0 in the platform remove callback a generic error message
by the device core is suppressed, nothing else changes.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/mtd/lpddr/lpddr2_nvm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/lpddr/lpddr2_nvm.c b/drivers/mtd/lpddr/lpddr2_nvm.c
index 72f5c7b30079..367e2d906de0 100644
--- a/drivers/mtd/lpddr/lpddr2_nvm.c
+++ b/drivers/mtd/lpddr/lpddr2_nvm.c
@@ -478,7 +478,9 @@ static int lpddr2_nvm_probe(struct platform_device *pdev)
  */
 static int lpddr2_nvm_remove(struct platform_device *pdev)
 {
-	return mtd_device_unregister(dev_get_drvdata(&pdev->dev));
+	WARN_ON(mtd_device_unregister(dev_get_drvdata(&pdev->dev)));
+
+	return 0;
 }
 
 /* Initialize platform_driver data structure for lpddr2_nvm */
-- 
2.36.1


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