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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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  parent reply	other threads:[~2022-06-03 21:08 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-03 21:07 [PATCH 00/14] mtd: Fix platform remove callbacks to always return 0 Uwe Kleine-König
2022-06-03 21:07 ` [PATCH 01/14] mtd: hyperbus: Make hyperbus_unregister_device() return void Uwe Kleine-König
2022-06-09 13:10   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 02/14] mtd: spi-nor: aspeed-smc: Make aspeed_smc_unregister() " Uwe Kleine-König
2022-06-07  9:28   ` Pratyush Yadav
2022-06-07  9:54     ` Cédric Le Goater
2022-06-03 21:07 ` [PATCH 03/14] mtd: powernv_flash: Warn about failure to unregister mtd device Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 04/14] mtd: st-spi_fsm: " Uwe Kleine-König
2022-06-03 21:07 ` Uwe Kleine-König [this message]
2022-06-09 13:09   ` [PATCH 05/14] mtd: lpddr2_nvm: " Miquel Raynal
2022-06-03 21:07 ` [PATCH 06/14] mtd: spear_smi: Don't skip cleanup after mtd_device_unregister() failed Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 07/14] mtd: spear_smi: Drop if with an always false condition Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 08/14] mtd: rawnand: atmel: Warn about failure to unregister mtd device Uwe Kleine-König
2022-06-06 13:16   ` Miquel Raynal
2022-06-06 19:37     ` Uwe Kleine-König
2022-06-07  6:14       ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 09/14] mtd: rawnand: omap2: Suppress error message after WARN in .remove() Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 10/14] mtd: rawnand: tegra: Don't skip cleanup after mtd_device_unregister() failed Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 11/14] mtd: rawnand: meson: " Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 12/14] mtd: rawnand: meson: Drop cleaning platform data in .remove() Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 13/14] mtd: physmap: Don't skip cleanup after mtd_device_unregister() failed Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-03 21:07 ` [PATCH 14/14] mtd: physmap: Drop if with an always false condition Uwe Kleine-König
2022-06-09 13:09   ` Miquel Raynal
2022-06-06 13:18 ` [PATCH 00/14] mtd: Fix platform remove callbacks to always return 0 Miquel Raynal
2022-06-07  9:32   ` Pratyush Yadav
2022-06-07 10:47     ` Miquel Raynal

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