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mtd: powernv_flash: Warn about failure to unregister mtd device 

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>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220603210758.148493-4-u.kleine-koenig@pengutronix.de
This commit is contained in:
Uwe Kleine-König 2022-06-03 23:07:47 +02:00 committed by Miquel Raynal
parent 0c90466a79
commit 90914b4e8e
1 changed files with 3 additions and 1 deletions
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4
drivers/mtd/devices/powernv_flash.c
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@ -270,7 +270,9 @@ static int powernv_flash_release(struct platform_device *pdev)
struct powernv_flash *data = dev_get_drvdata(&(pdev->dev));
/* All resources should be freed automatically */
return mtd_device_unregister(&(data->mtd));
WARN_ON(mtd_device_unregister(&data->mtd));
return 0;
}
static const struct of_device_id powernv_flash_match[] = {