* [d-kernel] [PATCH un-def/sisyphus] phy: rockchip-inno-usb2: Return zero after otg sync
@ 2022-09-12 13:25 Vitaly Chikunov
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From: Vitaly Chikunov @ 2022-09-12 13:25 UTC (permalink / raw)
To: devel-kernel
From: Peter Geis <pgwipeout@gmail.com>
The otg sync state patch reuses the ret variable, but fails to set it to
zero after use. This leads to a situation when the otg port is in
peripheral mode where the otg phy aborts halfway through setup. It also
fails to account for a failure to register the extcon notifier. Fix this
by using our own variable and skipping otg sync in case of failure.
Fixes: 8dc60f8da22f ("phy: rockchip-inno-usb2: Sync initial otg state")
Reported-by: Markus Reichl <m.reichl@fivetechno.de>
Reported-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Tested-by: Michael Riesch <michael.riesch@wolfvision.net>
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Reviewed-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20220902184543.1234835-1-pgwipeout@gmail.com
Link: https://bugzilla.altlinux.org/43732
Signed-off-by: Vitaly Chikunov <vt@altlinux.org>
---
drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 5223d4c9afdf..39f14a5b78cd 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -1124,7 +1124,7 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy,
struct rockchip_usb2phy_port *rport,
struct device_node *child_np)
{
- int ret;
+ int ret, id;
rport->port_id = USB2PHY_PORT_OTG;
rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_OTG];
@@ -1162,13 +1162,15 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy,
ret = devm_extcon_register_notifier(rphy->dev, rphy->edev,
EXTCON_USB_HOST, &rport->event_nb);
- if (ret)
+ if (ret) {
dev_err(rphy->dev, "register USB HOST notifier failed\n");
+ goto out;
+ }
if (!of_property_read_bool(rphy->dev->of_node, "extcon")) {
/* do initial sync of usb state */
- ret = property_enabled(rphy->grf, &rport->port_cfg->utmi_id);
- extcon_set_state_sync(rphy->edev, EXTCON_USB_HOST, !ret);
+ id = property_enabled(rphy->grf, &rport->port_cfg->utmi_id);
+ extcon_set_state_sync(rphy->edev, EXTCON_USB_HOST, !id);
}
}
--
2.33.4
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2022-09-12 13:25 [d-kernel] [PATCH un-def/sisyphus] phy: rockchip-inno-usb2: Return zero after otg sync Vitaly Chikunov
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