linux

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Files

Russell King (Oracle) 202ad1aaca usb: gadget: tegra-xudc: fix PM use count underflow

Upon resume from system suspend, the PM runtime core issues the
following warning:

tegra-xudc 3550000.usb: Runtime PM usage count underflow!

This is because tegra_xudc_resume() unconditionally calls
schedule_work(&xudc->usb_role_sw_work) whether or not anything has
changed, which causes tegra_xudc_device_mode_off() to be called
even when we're already in that mode.

Keep track of the current state of "device_mode", and only schedule
this work if it has changed from the hardware state on resume.

Signed-off-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1uhtkH-007KDZ-JT@rmk-PC.armlinux.org.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-08-13 17:15:45 +02:00

function

Merge tag 'usb-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2025-07-29 10:17:10 -07:00

legacy

functionfs, gadgetfs: use simple_recursive_removal()

2025-07-02 22:36:52 -04:00

udc

usb: gadget: tegra-xudc: fix PM use count underflow

2025-08-13 17:15:45 +02:00

composite.c

usb: gadget : fix use-after-free in composite_dev_cleanup()