diff options
| author | Cosmin Tanislav <demonsingur@gmail.com> | 2024-11-28 15:16:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-01 18:30:06 +0100 |
| commit | 9fdec4786690a648f1bbfbfc0ff42eb44e542732 (patch) | |
| tree | 19d5d808aa08595accbb9e9f8980b0ec2fd8fe22 /drivers/base | |
| parent | 87d69690814fbf217761419d9a5101c42e77076a (diff) | |
regmap: detach regmap from dev on regmap_exit
commit 3061e170381af96d1e66799d34264e6414d428a7 upstream.
At the end of __regmap_init(), if dev is not NULL, regmap_attach_dev()
is called, which adds a devres reference to the regmap, to be able to
retrieve a dev's regmap by name using dev_get_regmap().
When calling regmap_exit, the opposite does not happen, and the
reference is kept until the dev is detached.
Add a regmap_detach_dev() function and call it in regmap_exit() to make
sure that the devres reference is not kept.
Cc: stable@vger.kernel.org
Fixes: 72b39f6f2b5a ("regmap: Implement dev_get_regmap()")
Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com>
Rule: add
Link: https://lore.kernel.org/stable/20241128130554.362486-1-demonsingur%40gmail.com
Link: https://patch.msgid.link/20241128131625.363835-1-demonsingur@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250115033244.2540522-1-tzungbi@kernel.org
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 15b37a4163d3..f0e314abcafc 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -652,6 +652,17 @@ int regmap_attach_dev(struct device *dev, struct regmap *map, } EXPORT_SYMBOL_GPL(regmap_attach_dev); +static int dev_get_regmap_match(struct device *dev, void *res, void *data); + +static int regmap_detach_dev(struct device *dev, struct regmap *map) +{ + if (!dev) + return 0; + + return devres_release(dev, dev_get_regmap_release, + dev_get_regmap_match, (void *)map->name); +} + static enum regmap_endian regmap_get_reg_endian(const struct regmap_bus *bus, const struct regmap_config *config) { @@ -1536,6 +1547,7 @@ void regmap_exit(struct regmap *map) { struct regmap_async *async; + regmap_detach_dev(map->dev, map); regcache_exit(map); regmap_debugfs_exit(map); regmap_range_exit(map); |