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: Vladimir Zapolskiy <vz@mleia.com>, Tudor Ambarus <tudor.ambarus@linaro.org>, Pratyush Yadav <pratyush@kernel.org>, Michael Walle <michael@walle.cc>, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org, kernel@pengutronix.de Subject: [PATCH 20/20] mtd: spi-nor: nxp-spifi: Convert to platform remove callback returning void Date: Sun, 8 Oct 2023 22:01:43 +0200 [thread overview] Message-ID: <20231008200143.196369-21-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20231008200143.196369-1-u.kleine-koenig@pengutronix.de> The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/mtd/spi-nor/controllers/nxp-spifi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/spi-nor/controllers/nxp-spifi.c b/drivers/mtd/spi-nor/controllers/nxp-spifi.c index 5d8f47ab146f..5aee62f51031 100644 --- a/drivers/mtd/spi-nor/controllers/nxp-spifi.c +++ b/drivers/mtd/spi-nor/controllers/nxp-spifi.c @@ -431,13 +431,11 @@ static int nxp_spifi_probe(struct platform_device *pdev) return 0; } -static int nxp_spifi_remove(struct platform_device *pdev) +static void nxp_spifi_remove(struct platform_device *pdev) { struct nxp_spifi *spifi = platform_get_drvdata(pdev); mtd_device_unregister(&spifi->nor.mtd); - - return 0; } static const struct of_device_id nxp_spifi_match[] = { @@ -448,7 +446,7 @@ MODULE_DEVICE_TABLE(of, nxp_spifi_match); static struct platform_driver nxp_spifi_driver = { .probe = nxp_spifi_probe, - .remove = nxp_spifi_remove, + .remove_new = nxp_spifi_remove, .driver = { .name = "nxp-spifi", .of_match_table = nxp_spifi_match, -- 2.40.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
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: Vladimir Zapolskiy <vz@mleia.com>, Tudor Ambarus <tudor.ambarus@linaro.org>, Pratyush Yadav <pratyush@kernel.org>, Michael Walle <michael@walle.cc>, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org, kernel@pengutronix.de Subject: [PATCH 20/20] mtd: spi-nor: nxp-spifi: Convert to platform remove callback returning void Date: Sun, 8 Oct 2023 22:01:43 +0200 [thread overview] Message-ID: <20231008200143.196369-21-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20231008200143.196369-1-u.kleine-koenig@pengutronix.de> The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/mtd/spi-nor/controllers/nxp-spifi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/spi-nor/controllers/nxp-spifi.c b/drivers/mtd/spi-nor/controllers/nxp-spifi.c index 5d8f47ab146f..5aee62f51031 100644 --- a/drivers/mtd/spi-nor/controllers/nxp-spifi.c +++ b/drivers/mtd/spi-nor/controllers/nxp-spifi.c @@ -431,13 +431,11 @@ static int nxp_spifi_probe(struct platform_device *pdev) return 0; } -static int nxp_spifi_remove(struct platform_device *pdev) +static void nxp_spifi_remove(struct platform_device *pdev) { struct nxp_spifi *spifi = platform_get_drvdata(pdev); mtd_device_unregister(&spifi->nor.mtd); - - return 0; } static const struct of_device_id nxp_spifi_match[] = { @@ -448,7 +446,7 @@ MODULE_DEVICE_TABLE(of, nxp_spifi_match); static struct platform_driver nxp_spifi_driver = { .probe = nxp_spifi_probe, - .remove = nxp_spifi_remove, + .remove_new = nxp_spifi_remove, .driver = { .name = "nxp-spifi", .of_match_table = nxp_spifi_match, -- 2.40.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-10-08 20:02 UTC|newest] Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-10-08 20:01 [PATCH 00/20] mtd: Convert to platform remove callback returning void Uwe Kleine-König 2023-10-08 20:01 ` Uwe Kleine-König 2023-10-08 20:01 ` Uwe Kleine-König 2023-10-08 20:01 ` Uwe Kleine-König 2023-10-08 20:01 ` [PATCH 01/20] mtd: rawnand: txx9ndfmc: Mark driver struct with __refdata to prevent section mismatch warning Uwe Kleine-König 2023-10-08 20:01 ` Uwe Kleine-König 2023-10-09 7:22 ` Masahiro Yamada 2023-10-09 7:22 ` Masahiro Yamada 2023-10-09 8:43 ` Arnd Bergmann 2023-10-09 8:43 ` Arnd Bergmann 2023-10-09 10:30 ` Uwe Kleine-König 2023-10-09 10:30 ` Uwe Kleine-König 2023-10-09 12:46 ` Miquel Raynal 2023-10-09 12:46 ` Miquel Raynal 2023-10-09 13:01 ` Arnd Bergmann 2023-10-09 13:01 ` Arnd Bergmann 2023-10-09 13:37 ` Miquel Raynal 2023-10-09 13:37 ` Miquel Raynal 2023-10-16 8:57 ` Miquel Raynal 2023-10-16 8:57 ` Miquel Raynal 2023-10-16 9:25 ` Arnd Bergmann 2023-10-16 9:25 ` Arnd Bergmann 2023-10-16 10:21 ` Uwe Kleine-König 2023-10-16 10:21 ` Uwe Kleine-König 2023-10-17 10:20 ` Masahiro Yamada 2023-10-17 10:20 ` Masahiro Yamada 2023-10-17 13:20 ` Uwe Kleine-König 2023-10-17 13:20 ` Uwe Kleine-König 2023-10-17 13:45 ` Greg Kroah-Hartman 2023-10-17 13:45 ` Greg Kroah-Hartman 2023-10-08 20:01 ` [PATCH 02/20] mtd: rawnand: txx9ndfmc: Drop if block with always false condition Uwe Kleine-König 2023-10-08 20:01 ` [PATCH 03/20] mtd: bcm47xxsflash: Convert to platform remove callback returning void Uwe Kleine-König 2023-10-16 9:28 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 04/20] mtd: docg3: " Uwe Kleine-König 2023-10-16 9:28 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 05/20] mtd: phram: " Uwe Kleine-König 2023-10-16 9:28 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 06/20] mtd: powernv_flash: " Uwe Kleine-König 2023-10-08 20:01 ` Uwe Kleine-König 2023-10-16 9:28 ` Miquel Raynal 2023-10-16 9:28 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 07/20] mtd: spear_smi: " Uwe Kleine-König 2023-10-16 9:28 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 08/20] mtd: st_spi_fsm: " Uwe Kleine-König 2023-10-16 9:28 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 09/20] mtd: hyperbus: hbmc-am654: " Uwe Kleine-König 2023-10-16 9:28 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 10/20] mtd: hyperbus: rpc-if: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 11/20] mtd: lpddr2_nvm: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 12/20] mtd: maps: lantiq-flash: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 13/20] mtd: maps: physmap-core: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 14/20] mtd: maps: plat-ram: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 15/20] mtd: maps: pxa2xx-flash: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 16/20] mtd: maps: sa1100-flash: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 17/20] mtd: maps: sun_uflash: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` [PATCH 18/20] mtd: rawnand: txx9ndfmc: " Uwe Kleine-König 2023-10-08 20:01 ` [PATCH 19/20] mtd: spi-nor: hisi-sfc: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-08 20:01 ` Uwe Kleine-König [this message] 2023-10-08 20:01 ` [PATCH 20/20] mtd: spi-nor: nxp-spifi: " Uwe Kleine-König 2023-10-16 9:27 ` Miquel Raynal 2023-10-16 9:27 ` Miquel Raynal 2023-10-09 6:07 ` [PATCH 00/20] mtd: " Tudor Ambarus 2023-10-09 6:07 ` Tudor Ambarus 2023-10-09 6:07 ` Tudor Ambarus 2023-10-09 6:07 ` Tudor Ambarus
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