From: Uwe Kleine-König Date: Sun, 7 May 2023 16:25:57 +0000 (+0200) Subject: drm/omap: Convert to platform remove callback returning void X-Git-Tag: v6.6-rc1~136^2~21^2~172 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c2807ecb529004ea6f2c2be823c495dc8491e205;p=thirdparty%2Fkernel%2Flinux.git drm/omap: Convert to platform remove callback returning void 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 (mostly) ignored 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. Trivially convert the omap drm driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Reviewed-by: Laurent Pinchart Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/20230507162616.1368908-35-u.kleine-koenig@pengutronix.de --- diff --git a/drivers/gpu/drm/omapdrm/dss/dispc.c b/drivers/gpu/drm/omapdrm/dss/dispc.c index aacad5045e958..c26aab4939fa0 100644 --- a/drivers/gpu/drm/omapdrm/dss/dispc.c +++ b/drivers/gpu/drm/omapdrm/dss/dispc.c @@ -4858,10 +4858,9 @@ static int dispc_probe(struct platform_device *pdev) return component_add(&pdev->dev, &dispc_component_ops); } -static int dispc_remove(struct platform_device *pdev) +static void dispc_remove(struct platform_device *pdev) { component_del(&pdev->dev, &dispc_component_ops); - return 0; } static __maybe_unused int dispc_runtime_suspend(struct device *dev) @@ -4913,7 +4912,7 @@ static const struct dev_pm_ops dispc_pm_ops = { struct platform_driver omap_dispchw_driver = { .probe = dispc_probe, - .remove = dispc_remove, + .remove_new = dispc_remove, .driver = { .name = "omapdss_dispc", .pm = &dispc_pm_ops, diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 4c1084eb01759..ea63c64d3a1ab 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -5044,7 +5044,7 @@ err_pm_disable: return r; } -static int dsi_remove(struct platform_device *pdev) +static void dsi_remove(struct platform_device *pdev) { struct dsi_data *dsi = platform_get_drvdata(pdev); @@ -5060,8 +5060,6 @@ static int dsi_remove(struct platform_device *pdev) regulator_disable(dsi->vdds_dsi_reg); dsi->vdds_dsi_enabled = false; } - - return 0; } static __maybe_unused int dsi_runtime_suspend(struct device *dev) @@ -5095,7 +5093,7 @@ static const struct dev_pm_ops dsi_pm_ops = { struct platform_driver omap_dsihw_driver = { .probe = dsi_probe, - .remove = dsi_remove, + .remove_new = dsi_remove, .driver = { .name = "omapdss_dsi", .pm = &dsi_pm_ops, diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c index c4febb8619103..02955f9768459 100644 --- a/drivers/gpu/drm/omapdrm/dss/dss.c +++ b/drivers/gpu/drm/omapdrm/dss/dss.c @@ -1532,7 +1532,7 @@ err_free_dss: return r; } -static int dss_remove(struct platform_device *pdev) +static void dss_remove(struct platform_device *pdev) { struct dss_device *dss = platform_get_drvdata(pdev); @@ -1557,8 +1557,6 @@ static int dss_remove(struct platform_device *pdev) dss_put_clocks(dss); kfree(dss); - - return 0; } static void dss_shutdown(struct platform_device *pdev) @@ -1607,7 +1605,7 @@ static const struct dev_pm_ops dss_pm_ops = { struct platform_driver omap_dsshw_driver = { .probe = dss_probe, - .remove = dss_remove, + .remove_new = dss_remove, .shutdown = dss_shutdown, .driver = { .name = "omapdss_dss", diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index a8a75dc247512..a26b77d99d52a 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -824,7 +824,7 @@ err_free: return r; } -static int hdmi4_remove(struct platform_device *pdev) +static void hdmi4_remove(struct platform_device *pdev) { struct omap_hdmi *hdmi = platform_get_drvdata(pdev); @@ -835,7 +835,6 @@ static int hdmi4_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); kfree(hdmi); - return 0; } static const struct of_device_id hdmi_of_match[] = { @@ -845,7 +844,7 @@ static const struct of_device_id hdmi_of_match[] = { struct platform_driver omapdss_hdmi4hw_driver = { .probe = hdmi4_probe, - .remove = hdmi4_remove, + .remove_new = hdmi4_remove, .driver = { .name = "omapdss_hdmi", .of_match_table = hdmi_of_match, diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c index 868712cd8a3a3..e6611c683857a 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c @@ -798,7 +798,7 @@ err_free: return r; } -static int hdmi5_remove(struct platform_device *pdev) +static void hdmi5_remove(struct platform_device *pdev) { struct omap_hdmi *hdmi = platform_get_drvdata(pdev); @@ -809,7 +809,6 @@ static int hdmi5_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); kfree(hdmi); - return 0; } static const struct of_device_id hdmi_of_match[] = { @@ -820,7 +819,7 @@ static const struct of_device_id hdmi_of_match[] = { struct platform_driver omapdss_hdmi5hw_driver = { .probe = hdmi5_probe, - .remove = hdmi5_remove, + .remove_new = hdmi5_remove, .driver = { .name = "omapdss_hdmi5", .of_match_table = hdmi_of_match, diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c index 4480b69ab5a78..f163d52a7c7da 100644 --- a/drivers/gpu/drm/omapdrm/dss/venc.c +++ b/drivers/gpu/drm/omapdrm/dss/venc.c @@ -865,7 +865,7 @@ err_free: return r; } -static int venc_remove(struct platform_device *pdev) +static void venc_remove(struct platform_device *pdev) { struct venc_device *venc = platform_get_drvdata(pdev); @@ -876,7 +876,6 @@ static int venc_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); kfree(venc); - return 0; } static __maybe_unused int venc_runtime_suspend(struct device *dev) @@ -913,7 +912,7 @@ static const struct of_device_id venc_of_match[] = { struct platform_driver omap_venchw_driver = { .probe = venc_probe, - .remove = venc_remove, + .remove_new = venc_remove, .driver = { .name = "omapdss_venc", .pm = &venc_pm_ops, diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c index 61a27dd7392ea..9753c1e1f9944 100644 --- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c +++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c @@ -723,7 +723,7 @@ bool dmm_is_available(void) return omap_dmm ? true : false; } -static int omap_dmm_remove(struct platform_device *dev) +static void omap_dmm_remove(struct platform_device *dev) { struct tiler_block *block, *_block; int i; @@ -763,8 +763,6 @@ static int omap_dmm_remove(struct platform_device *dev) kfree(omap_dmm); omap_dmm = NULL; } - - return 0; } static int omap_dmm_probe(struct platform_device *dev) @@ -982,8 +980,7 @@ static int omap_dmm_probe(struct platform_device *dev) return 0; fail: - if (omap_dmm_remove(dev)) - dev_err(&dev->dev, "cleanup failed\n"); + omap_dmm_remove(dev); return ret; } @@ -1213,7 +1210,7 @@ static const struct of_device_id dmm_of_match[] = { struct platform_driver omap_dmm_driver = { .probe = omap_dmm_probe, - .remove = omap_dmm_remove, + .remove_new = omap_dmm_remove, .driver = { .owner = THIS_MODULE, .name = DMM_DRIVER_NAME, diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index 5ed5497261043..671d26b9d339e 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -821,14 +821,12 @@ static int pdev_probe(struct platform_device *pdev) return ret; } -static int pdev_remove(struct platform_device *pdev) +static void pdev_remove(struct platform_device *pdev) { struct omap_drm_private *priv = platform_get_drvdata(pdev); omapdrm_cleanup(priv); kfree(priv); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -859,7 +857,7 @@ static struct platform_driver pdev = { .pm = &omapdrm_pm_ops, }, .probe = pdev_probe, - .remove = pdev_remove, + .remove_new = pdev_remove, }; static struct platform_driver * const drivers[] = {