auxbus: make to_auxiliary_drv accept and return a constant pointer

In the quest to make struct device constant, start by making
to_auxiliary_drv() return a constant pointer so that drivers that call
this can be fixed up before the driver core changes.

As the return type previously was not constant, also fix up all callers
that were assuming that the pointer was not going to be a constant one
in order to not break the build.

Cc: Dave Ertman <david.m.ertman@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Bingbu Cao <bingbu.cao@intel.com>
Cc: Tianshu Qiu <tian.shu.qiu@intel.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>
Cc: Saeed Mahameed <saeedm@nvidia.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Tariq Toukan <tariqt@nvidia.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
Cc: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Cc: Daniel Baluta <daniel.baluta@nxp.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: linux-media@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: intel-wired-lan@lists.osuosl.org
Cc: linux-rdma@vger.kernel.org
Cc: sound-open-firmware@alsa-project.org
Cc: linux-sound@vger.kernel.org
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> # drivers/media/pci/intel/ipu6
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Martin Habets <habetsm.xilinx@gmail.com>
Link: https://lore.kernel.org/r/20240611130103.3262749-7-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/base/auxiliary.c b/drivers/base/auxiliary.c
index d3a2c40c2f12..5832e31bb77b 100644
--- a/drivers/base/auxiliary.c
+++ b/drivers/base/auxiliary.c
@@ -180,7 +180,7 @@ static const struct auxiliary_device_id *auxiliary_match_id(const struct auxilia
 static int auxiliary_match(struct device *dev, struct device_driver *drv)
 {
 	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
-	struct auxiliary_driver *auxdrv = to_auxiliary_drv(drv);
+	const struct auxiliary_driver *auxdrv = to_auxiliary_drv(drv);
 
 	return !!auxiliary_match_id(auxdrv->id_table, auxdev);
 }
@@ -203,7 +203,7 @@ static const struct dev_pm_ops auxiliary_dev_pm_ops = {
 
 static int auxiliary_bus_probe(struct device *dev)
 {
-	struct auxiliary_driver *auxdrv = to_auxiliary_drv(dev->driver);
+	const struct auxiliary_driver *auxdrv = to_auxiliary_drv(dev->driver);
 	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
 	int ret;
 
@@ -222,7 +222,7 @@ static int auxiliary_bus_probe(struct device *dev)
 
 static void auxiliary_bus_remove(struct device *dev)
 {
-	struct auxiliary_driver *auxdrv = to_auxiliary_drv(dev->driver);
+	const struct auxiliary_driver *auxdrv = to_auxiliary_drv(dev->driver);
 	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
 
 	if (auxdrv->remove)
@@ -232,7 +232,7 @@ static void auxiliary_bus_remove(struct device *dev)
 
 static void auxiliary_bus_shutdown(struct device *dev)
 {
-	struct auxiliary_driver *auxdrv = NULL;
+	const struct auxiliary_driver *auxdrv = NULL;
 	struct auxiliary_device *auxdev;
 
 	if (dev->driver) {