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mtd: hyperbus: Make hyperbus_unregister_device() return void

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The only thing that could theoretically fail in that function is
mtd_device_unregister(). However it's not supposed to fail and when
used correctly it doesn't. So wail loudly if it does anyhow.

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

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/20220603210758.148493-2-u.kleine-koenig@pengutronix.de
This commit is contained in:
Uwe Kleine-König 2022-06-03 23:07:45 +02:00 committed by Miquel Raynal
parent 83208e106a
commit 0c90466a79
4 changed files with 9 additions and 14 deletions
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6
drivers/mtd/hyperbus/hbmc-am654.c
View file

@ -233,16 +233,16 @@ static int am654_hbmc_remove(struct platform_device *pdev)
{
struct am654_hbmc_priv *priv = platform_get_drvdata(pdev);
struct am654_hbmc_device_priv *dev_priv = priv->hbdev.priv;
int ret;
ret = hyperbus_unregister_device(&priv->hbdev);
hyperbus_unregister_device(&priv->hbdev);
if (priv->mux_ctrl)
mux_control_deselect(priv->mux_ctrl);
if (dev_priv->rx_chan)
dma_release_channel(dev_priv->rx_chan);
return ret;
return 0;
}
static const struct of_device_id am654_hbmc_dt_ids[] = {

8
drivers/mtd/hyperbus/hyperbus-core.c
View file

@ -126,16 +126,12 @@ int hyperbus_register_device(struct hyperbus_device *hbdev)
}
EXPORT_SYMBOL_GPL(hyperbus_register_device);
int hyperbus_unregister_device(struct hyperbus_device *hbdev)
void hyperbus_unregister_device(struct hyperbus_device *hbdev)
{
int ret = 0;
if (hbdev && hbdev->mtd) {
ret = mtd_device_unregister(hbdev->mtd);
WARN_ON(mtd_device_unregister(hbdev->mtd));
map_destroy(hbdev->mtd);
}
return ret;
}
EXPORT_SYMBOL_GPL(hyperbus_unregister_device);

5
drivers/mtd/hyperbus/rpc-if.c
View file

@ -153,11 +153,12 @@ static int rpcif_hb_probe(struct platform_device *pdev)
static int rpcif_hb_remove(struct platform_device *pdev)
{
struct rpcif_hyperbus *hyperbus = platform_get_drvdata(pdev);
int error = hyperbus_unregister_device(&hyperbus->hbdev);
hyperbus_unregister_device(&hyperbus->hbdev);
rpcif_disable_rpm(&hyperbus->rpc);
return error;
return 0;
}
static struct platform_driver rpcif_platform_driver = {

4
include/linux/mtd/hyperbus.h
View file

@ -89,9 +89,7 @@ int hyperbus_register_device(struct hyperbus_device *hbdev);
/**
* hyperbus_unregister_device - deregister HyperBus slave memory device
* @hbdev: hyperbus_device to be unregistered
*
* Return: 0 for success, others for failure.
*/
int hyperbus_unregister_device(struct hyperbus_device *hbdev);
void hyperbus_unregister_device(struct hyperbus_device *hbdev);
#endif /* __LINUX_MTD_HYPERBUS_H__ */