Re: [PATCH] usb: dwc3: meson-g12a: fix suspend resume regulator unbalanced disables
From: Kevin Hilman <khilman@baylibre.com>
Date: 2019-08-21 18:02:16
Also in:
linux-amlogic, linux-usb, lkml
Neil Armstrong [off-list ref] 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 <redacted>Tested-by: Kevin Hilman <khilman@baylibre.com> _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel