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SubjectRe: [PATCH] usb: dwc3: meson-g12a: fix suspend resume regulator unbalanced disables
Date
Neil Armstrong <narmstrong@baylibre.com> writes:

> When going in suspend, in Device mode, then resuming back leads
> to the following:
>
> unbalanced disables for USB_PWR_EN
> WARNING: CPU: 0 PID: 163 at ../drivers/regulator/core.c:2590 _regulator_disable+0x104/0x180
> Hardware name: Amlogic Meson G12A U200 Development Board (DT)
> [...]
> pc : _regulator_disable+0x104/0x180
> lr : _regulator_disable+0x104/0x180
> [...]
> Call trace:
> _regulator_disable+0x104/0x180
> regulator_disable+0x40/0x78
> dwc3_meson_g12a_otg_mode_set+0x84/0xb0
> dwc3_meson_g12a_irq_thread+0x58/0xb8
> irq_thread_fn+0x28/0x80
> irq_thread+0x118/0x1b8
> kthread+0xf4/0x120
> ret_from_fork+0x10/0x18
>
> This disables the regulator if enabled on suspend, and the reverse on
> resume.
>
> Fixes: c99993376f72 ("usb: dwc3: Add Amlogic G12A DWC3 glue")
> Reported-by: Kevin Hilman <khilman@baylibre.com>
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

Tested-by: Kevin Hilman <khilman@baylibre.com>

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