From a53469a68eb886e84dd8b69a1458a623d3591793 Mon Sep 17 00:00:00 2001
From: Bin Liu <b-liu@ti.com>
Date: Wed, 16 Jan 2019 11:54:07 -0600
Subject: [PATCH] usb: phy: am335x: fix race condition in _probe
Git-commit: a53469a68eb886e84dd8b69a1458a623d3591793
Patch-mainline: v5.0-rc6
References: bsc#1051510
power off the phy should be done before populate the phy. Otherwise,
am335x_init() could be called by the phy owner to power on the phy first,
then am335x_phy_probe() turns off the phy again without the caller knowing
it.
Fixes: 2fc711d76352 ("usb: phy: am335x: Enable USB remote wakeup using PHY wakeup")
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/usb/phy/phy-am335x.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/usb/phy/phy-am335x.c b/drivers/usb/phy/phy-am335x.c
index 27bdb7222527..f5f0568d8533 100644
--- a/drivers/usb/phy/phy-am335x.c
+++ b/drivers/usb/phy/phy-am335x.c
@@ -61,9 +61,6 @@ static int am335x_phy_probe(struct platform_device *pdev)
if (ret)
return ret;
- ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy);
- if (ret)
- return ret;
am_phy->usb_phy_gen.phy.init = am335x_init;
am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown;
@@ -82,7 +79,7 @@ static int am335x_phy_probe(struct platform_device *pdev)
device_set_wakeup_enable(dev, false);
phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false);
- return 0;
+ return usb_add_phy_dev(&am_phy->usb_phy_gen.phy);
}
static int am335x_phy_remove(struct platform_device *pdev)
--
2.16.4