From: Chen-Yu Tsai <wens@kernel•org>
To: Maxime Ripard <maxime.ripard@bootlin•com>,
Greg Kroah-Hartman <gregkh@linuxfoundation•org>,
Kishon Vijay Abraham I <kishon@ti•com>
Cc: Chen-Yu Tsai <wens@csie•org>,
Grygorii Strashko <grygorii.strashko@ti•com>,
linux-usb@vger•kernel.org, linux-arm-kernel@lists•infradead.org,
linux-kernel@vger•kernel.org
Subject: [PATCH 2/2] usb: core: Try generic PHY_MODE_USB_HOST if usb_phy_roothub_set_mode fails
Date: Fri, 22 Mar 2019 16:51:08 +0800 [thread overview]
Message-ID: <20190322085108.18693-3-wens@kernel.org> (raw)
In-Reply-To: <20190322085108.18693-1-wens@kernel.org>
From: Chen-Yu Tsai <wens@csie•org>
Some PHYs do not support PHY_MODE_USB_HOST_SS, i.e. USB 3.0 or higher.
Fall back and try the more generic PHY_MODE_USB_HOST if it fails.
Fixes: b97a31348379 ("usb: core: comply to PHY framework")
Signed-off-by: Chen-Yu Tsai <wens@csie•org>
---
drivers/usb/core/hcd.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 3189181bb628..975d7c1288e3 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2741,6 +2741,9 @@ int usb_add_hcd(struct usb_hcd *hcd,
retval = usb_phy_roothub_set_mode(hcd->phy_roothub,
PHY_MODE_USB_HOST_SS);
+ if (retval)
+ retval = usb_phy_roothub_set_mode(hcd->phy_roothub,
+ PHY_MODE_USB_HOST);
if (retval)
goto err_usb_phy_roothub_power_on;
--
2.20.1
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next prev parent reply other threads:[~2019-03-22 8:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-22 8:51 [PATCH 0/2] ARM: sunxi: Fix USB host init fail on v5.1-rc1 Chen-Yu Tsai
2019-03-22 8:51 ` [PATCH 1/2] phy: sun4i-usb: Support set_mode to USB_HOST for non-OTG PHYs Chen-Yu Tsai
2019-03-22 8:51 ` Chen-Yu Tsai [this message]
2019-03-22 12:56 ` [PATCH 2/2] usb: core: Try generic PHY_MODE_USB_HOST if usb_phy_roothub_set_mode fails Neil Armstrong
2019-03-22 9:05 ` [PATCH 0/2] ARM: sunxi: Fix USB host init fail on v5.1-rc1 Maxime Ripard
2019-03-26 7:49 ` Greg Kroah-Hartman
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