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Date: Tue, 23 Aug 2022 10:24:54 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>, Rander Wang <rander.wang@...el.com>, Bard Liao <yung-chuan.liao@...ux.intel.com>, Vinod Koul <vkoul@...nel.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.19 125/287] soundwire: bus_type: fix remove and shutdown support From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com> [ Upstream commit df6407782964dc7e35ad84230abb38f46314b245 ] The bus sdw_drv_remove() and sdw_drv_shutdown() helpers are used conditionally, if the driver provides these routines. These helpers already test if the driver provides a .remove or .shutdown callback, so there's no harm in invoking the sdw_drv_remove() and sdw_drv_shutdown() unconditionally. In addition, the current code is imbalanced with dev_pm_domain_attach() called from sdw_drv_probe(), but dev_pm_domain_detach() called from sdw_drv_remove() only if the driver provides a .remove callback. Fixes: 9251345dca24b ("soundwire: Add SoundWire bus type") Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com> Reviewed-by: Rander Wang <rander.wang@...el.com> Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com> Link: https://lore.kernel.org/r/20220610015105.25987-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@...nel.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/soundwire/bus_type.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/soundwire/bus_type.c b/drivers/soundwire/bus_type.c index 283b2832728e..414621f3c43c 100644 --- a/drivers/soundwire/bus_type.c +++ b/drivers/soundwire/bus_type.c @@ -154,12 +154,8 @@ int __sdw_register_driver(struct sdw_driver *drv, struct module *owner) drv->driver.owner = owner; drv->driver.probe = sdw_drv_probe; - - if (drv->remove) - drv->driver.remove = sdw_drv_remove; - - if (drv->shutdown) - drv->driver.shutdown = sdw_drv_shutdown; + drv->driver.remove = sdw_drv_remove; + drv->driver.shutdown = sdw_drv_shutdown; return driver_register(&drv->driver); } -- 2.35.1
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