Commit 74851fbb authored by Haotian Zhang's avatar Haotian Zhang Committed by Greg Kroah-Hartman
Browse files

usb: gadget: renesas_usbf: Handle devm_pm_runtime_enable() errors 



devm_pm_runtime_enable() can fail due to memory allocation.
The current code ignores its return value, potentially causing
pm_runtime_resume_and_get() to operate on uninitialized runtime
PM state.

Check the return value of devm_pm_runtime_enable() and return on failure.

Fixes: 3e6e14ff ("usb: gadget: udc: add Renesas RZ/N1 USBF controller support")
Signed-off-by: default avatarHaotian Zhang <vulab@iscas.ac.cn>
Acked-by: default avatarHerve Codina <herve.codina@bootlin.com>
Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251124022215.1619-1-vulab@iscas.ac.cn


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent df5fde29

drivers/usb/gadget/udc/renesas_usbf.c

+3 −1
Original line number Diff line number Diff line
@@ -3262,7 +3262,9 @@ static int usbf_probe(struct platform_device *pdev) 
	if (IS_ERR(udc->regs))

		return PTR_ERR(udc->regs);



	devm_pm_runtime_enable(&pdev->dev);

	ret = devm_pm_runtime_enable(&pdev->dev);

	if (ret)

		return ret;

	ret = pm_runtime_resume_and_get(&pdev->dev);

	if (ret < 0)

		return ret;