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| author | Clément Léger <clement.leger@bootlin.com> | 2024-08-08 17:46:56 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2024-09-02 12:02:41 +0200 |
| commit | a05f87270e9013bf8ce37efe70c8cc3e243931cb (patch) | |
| tree | 4448624a732d80783ac25432a7009c1e8a1e7799 /drivers/reset | |
| parent | 0fa8ce76b713a31f6aef2f88d08eee74d7d3d8a7 (diff) | |
| download | linux-a05f87270e9013bf8ce37efe70c8cc3e243931cb.tar.gz linux-a05f87270e9013bf8ce37efe70c8cc3e243931cb.tar.bz2 linux-a05f87270e9013bf8ce37efe70c8cc3e243931cb.zip | |
reset: core: add get_device()/put_device on rcdev
Since the rcdev structure is allocated by the reset controller drivers
themselves, they need to exists as long as there is a consumer. A call to
module_get() is already existing but that does not work when using
device-tree overlays. In order to guarantee that the underlying reset
controller device does not vanish while using it, add a get_device() call
when retrieving a reset control from a reset controller device and a
put_device() when releasing that control.
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240808154658.247873-8-herve.codina@bootlin.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/reset')
| -rw-r--r-- | drivers/reset/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/reset/core.c b/drivers/reset/core.c index c9074810306c..4d509d41456a 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -812,6 +812,7 @@ __reset_control_get_internal(struct reset_controller_dev *rcdev, kref_init(&rstc->refcnt); rstc->acquired = acquired; rstc->shared = shared; + get_device(rcdev->dev); return rstc; } @@ -826,6 +827,7 @@ static void __reset_control_release(struct kref *kref) module_put(rstc->rcdev->owner); list_del(&rstc->list); + put_device(rstc->rcdev->dev); kfree(rstc); } |