]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/commit - drivers/usb/dwc3/dwc3-meson-g12a.c
Revert "usb: dwc3: meson-g12a: fix shared reset control use"
authorAmjad Ouled-Ameur <aouledameur@baylibre.com>
Thu, 27 Aug 2020 14:48:10 +0000 (16:48 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 4 Sep 2020 14:41:22 +0000 (16:41 +0200)
commita6498d51821edf9615b42b968fb419a40197a982
tree6dd2e943e87d058cd889c0aefa2175d282a14d77
parent1f3546ff3f0a1000971daef58406954bad3f7061
Revert "usb: dwc3: meson-g12a: fix shared reset control use"

This reverts commit 7a410953d1fb4dbe91ffcfdee9cbbf889d19b0d7.

This commit breaks USB on meson-gxl-s905x-libretech-cc. Reverting
the change solves the issue.

In fact, according to the reset framework code, consumers must not use
reset_control_(de)assert() on shared reset lines when reset_control_reset
has been used, and vice-versa.

Moreover, with this commit, usb is not guaranted to be reset since the
reset is likely to be initially deasserted.

Reverting the commit will bring back the suspend warning mentioned in the
commit description. Nevertheless, a warning is much less critical than
breaking dwc3-meson-g12a USB completely. We will address the warning
issue in another way as a 2nd step.

Fixes: 7a410953d1fb ("usb: dwc3: meson-g12a: fix shared reset control use")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
Reported-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20200827144810.26657-1-aouledameur@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/dwc3/dwc3-meson-g12a.c