| Message ID | 20220824122543.174730-1-pgwipeout@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3] phy: rockchip-inno-usb2: Return zero after otg sync | expand |
On 24-08-22, 08:25, Peter Geis wrote: > 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") > No blank here please > 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> > --- > Changelog: > v3 > - add missing brackets around new goto > v2 > - switch to using our own variable > - add missing goto to skip sync in case of registration failure > --- > drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c > index 0b1e9337ee8e..27da5ba379c4 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]; > @@ -1163,12 +1163,15 @@ 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) > + { :-( this is _not_ linux kernel code style! Reminder: it always helps to run checkpatch > 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); > } > } > > -- > 2.25.1
On Fri, Sep 2, 2022 at 1:35 PM Vinod Koul <vkoul@kernel.org> wrote: > > On 24-08-22, 08:25, Peter Geis wrote: > > 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") > > > > No blank here please > > > 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> > > --- > > Changelog: > > v3 > > - add missing brackets around new goto > > v2 > > - switch to using our own variable > > - add missing goto to skip sync in case of registration failure > > --- > > drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 9 ++++++--- > > 1 file changed, 6 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c > > index 0b1e9337ee8e..27da5ba379c4 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]; > > @@ -1163,12 +1163,15 @@ 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) > > + { > > :-( > > this is _not_ linux kernel code style! > > Reminder: it always helps to run checkpatch Ouch, yeah that's really embarrassing. Thank you for catching it. > > > 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); > > } > > } > > > > -- > > 2.25.1 > > -- > ~Vinod
diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c index 0b1e9337ee8e..27da5ba379c4 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]; @@ -1163,12 +1163,15 @@ 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) + { 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); } }
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> --- Changelog: v3 - add missing brackets around new goto v2 - switch to using our own variable - add missing goto to skip sync in case of registration failure --- drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)