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mfd: altera-sysmgr: Fix device leak on sysmgr regmap lookup 

Make sure to drop the reference taken to the sysmgr platform device when
retrieving its driver data.

Note that holding a reference to a device does not prevent its driver
data from going away.

Fixes: f36e789a1f ("mfd: altera-sysmgr: Add SOCFPGA System Manager")
Cc: stable@vger.kernel.org	# 5.2
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Johan Hovold 2025-09-25 17:02:19 +02:00 committed by Lee Jones
parent d306cbbc34
commit ccb7cd3218
1 changed files with 2 additions and 0 deletions
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2
drivers/mfd/altera-sysmgr.c
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@ -117,6 +117,8 @@ struct regmap *altr_sysmgr_regmap_lookup_by_phandle(struct device_node *np,
sysmgr = dev_get_drvdata(dev);
put_device(dev);
return sysmgr->regmap;
}
EXPORT_SYMBOL_GPL(altr_sysmgr_regmap_lookup_by_phandle);