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From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Mark Brown <broonie@kernel.org>,
	linux-spi@vger.kernel.org, kernel@pengutronix.de,
	dri-devel@lists.freedesktop.org, linux-staging@lists.linux.dev,
	"Rafael J. Wysocki" <rafael@kernel.org>
Subject: [PATCH 12/13] staging: fbtft: Make fbtft_remove_common() return void
Date: Mon, 11 Oct 2021 15:27:53 +0200	[thread overview]
Message-ID: <20211011132754.2479853-13-u.kleine-koenig@pengutronix.de> (raw)
In-Reply-To: <20211011132754.2479853-1-u.kleine-koenig@pengutronix.de>

fbtft_remove_common() is only called with a non-NULL fb_info. (All
callers are in remove callbacks and the matching probe callbacks set
driver data accordingly.) So fbtft_remove_common() always returns zero.
Make it return void instead which makes it easier to see in the callers
that there is no error to handle.

Also the return value of platform and spi remove callbacks is ignored
anyway and not freeing resources in .remove() is a bad idea.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/staging/fbtft/fbtft-core.c | 8 +-------
 drivers/staging/fbtft/fbtft.h      | 6 ++++--
 2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index ed992ca605eb..9c9eab1182a6 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -1318,23 +1318,17 @@ EXPORT_SYMBOL(fbtft_probe_common);
  * @info: Framebuffer
  *
  * Unregisters and releases the framebuffer
- *
- * Return: 0 if successful, negative if error
  */
-int fbtft_remove_common(struct device *dev, struct fb_info *info)
+void fbtft_remove_common(struct device *dev, struct fb_info *info)
 {
 	struct fbtft_par *par;
 
-	if (!info)
-		return -EINVAL;
 	par = info->par;
 	if (par)
 		fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par,
 			      "%s()\n", __func__);
 	fbtft_unregister_framebuffer(info);
 	fbtft_framebuffer_release(info);
-
-	return 0;
 }
 EXPORT_SYMBOL(fbtft_remove_common);
 
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index 76f8c090a837..68eba6c71b0f 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -283,7 +283,8 @@ static int fbtft_driver_remove_spi(struct spi_device *spi)                 \
 {                                                                          \
 	struct fb_info *info = spi_get_drvdata(spi);                       \
 									   \
-	return fbtft_remove_common(&spi->dev, info);                       \
+	fbtft_remove_common(&spi->dev, info);                              \
+	return 0;                                                          \
 }                                                                          \
 									   \
 static int fbtft_driver_probe_pdev(struct platform_device *pdev)           \
@@ -295,7 +296,8 @@ static int fbtft_driver_remove_pdev(struct platform_device *pdev)          \
 {                                                                          \
 	struct fb_info *info = platform_get_drvdata(pdev);                 \
 									   \
-	return fbtft_remove_common(&pdev->dev, info);                      \
+	fbtft_remove_common(&pdev->dev, info);                             \
+	return 0;                                                          \
 }                                                                          \
 									   \
 static const struct of_device_id dt_ids[] = {                              \
-- 
2.30.2


  parent reply	other threads:[~2021-10-11 13:28 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-11 13:27 [PATCH 00/13] Make some spi device drivers return zero in .remove() Uwe Kleine-König
2021-10-11 13:27 ` [PATCH 01/13] drm/panel: s6e63m0: Make s6e63m0_remove() return void Uwe Kleine-König
2021-10-11 16:51   ` Sam Ravnborg
2021-10-11 13:27 ` [PATCH 02/13] hwmon: adt7x10: Make adt7x10_remove() " Uwe Kleine-König
2021-10-11 14:19   ` Guenter Roeck
2021-10-11 13:27 ` [PATCH 03/13] hwmon: max31722: Warn about failure to put device in stand-by in .remove() Uwe Kleine-König
2021-10-11 13:41   ` Hennerich, Michael
2021-10-11 13:27 ` [PATCH 04/13] input: adxl34xx: Make adxl34x_remove() return void Uwe Kleine-König
2021-10-11 13:27 ` [PATCH 05/13] input: touchscreen: tsc200x: Make tsc200x_remove() " Uwe Kleine-König
2021-10-11 13:27 ` [PATCH 06/13] media: cxd2880: Eliminate dead code Uwe Kleine-König
2021-10-11 13:27 ` [PATCH 07/13] mfd: mc13xxx: Make mc13xxx_common_exit() return void Uwe Kleine-König
2021-10-11 13:27 ` [PATCH 08/13] mfd: stmpe: Make stmpe_remove() " Uwe Kleine-König
2021-10-11 13:27 ` [PATCH 09/13] mfd: tps65912: Make tps65912_device_exit() " Uwe Kleine-König
2021-10-11 13:27 ` [PATCH 10/13] serial: max310x: Make max310x_remove() " Uwe Kleine-König
2021-10-11 13:51   ` Greg Kroah-Hartman
2021-10-11 13:27 ` [PATCH 11/13] serial: sc16is7xx: Make sc16is7xx_remove() " Uwe Kleine-König
2021-10-11 13:27 ` Uwe Kleine-König [this message]
2021-10-11 13:27 ` [PATCH 13/13] tpm: st33zp24: Make st33zp24_remove() " Uwe Kleine-König
2021-10-12 16:47   ` Jarkko Sakkinen
2021-10-12 17:40     ` Uwe Kleine-König
2021-10-12 17:46       ` Jarkko Sakkinen
2021-10-11 20:42 ` [PATCH 00/13] Make some spi device drivers return zero in .remove() Uwe Kleine-König

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