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phy: ti: omap-usb2: fix device leak at unbind

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[ Upstream commit 64961557efa1b98f375c0579779e7eeda1a02c42 ]

Make sure to drop the reference to the control device taken by
of_find_device_by_node() during probe when the driver is unbound.

Fixes: 478b6c7436 ("usb: phy: omap-usb2: Don't use omap_get_control_dev()")
Cc: stable@vger.kernel.org	# 3.13
Cc: Roger Quadros <rogerq@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20250724131206.2211-3-johan@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold
2025-09-17 09:18:07 -04:00
committed by Greg Kroah-Hartman
parent 34a8d5a198
commit 27b04564f7
1 changed files with 13 additions and 0 deletions
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13
drivers/phy/ti/phy-omap-usb2.c
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@@ -363,6 +363,13 @@ static void omap_usb2_init_errata(struct omap_usb *phy)
phy->flags |= OMAP_USB2_DISABLE_CHRG_DET;
}
static void omap_usb2_put_device(void *_dev)
{
struct device *dev = _dev;
put_device(dev);
}
static int omap_usb2_probe(struct platform_device *pdev)
{
struct omap_usb *phy;
@@ -373,6 +380,7 @@ static int omap_usb2_probe(struct platform_device *pdev)
struct device_node *control_node;
struct platform_device *control_pdev;
const struct usb_phy_data *phy_data;
int ret;
phy_data = device_get_match_data(&pdev->dev);
if (!phy_data)
@@ -423,6 +431,11 @@ static int omap_usb2_probe(struct platform_device *pdev)
return -EINVAL;
}
phy->control_dev = &control_pdev->dev;
ret = devm_add_action_or_reset(&pdev->dev, omap_usb2_put_device,
phy->control_dev);
if (ret)
return ret;
} else {
if (of_property_read_u32_index(node,
"syscon-phy-power", 1,