Commit 6f504dca authored Feb 07, 2017 by Hemant Kumar Committed by Mayank Rana Mar 10, 2017

usb: dwc3: Set core clk rate to default upon device remove notification

commit 1eec2157d84dcb ("usb: dwc3: Update core clock rate based on
USB port speed.") only sets clk rate for HS/FS/LS device add notification.
In case super speed device is plugged in after LS/FS/HS device unplug in
absence of runtime suspend, core clk rate remains at high speed core clk
rate. Fix this issue by setting the core clk rate back to default when
a device is being removed from root hub.

Change-Id: I0ac37b7ff08a9a297441304eb2cfaff398d44bb9
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>

parent 8e6a11e2

drivers/usb/dwc3/dwc3-msm.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -3221,6 +3221,11 @@ static int dwc3_msm_host_notifier(struct notifier_block *nb,
		pval.intval = 0;
		power_supply_set_property(mdwc->usb_psy,
		POWER_SUPPLY_PROP_BOOST_CURRENT, &pval);

		/* set rate back to default core clk rate */
		clk_set_rate(mdwc->core_clk, mdwc->core_clk_rate);
		dev_dbg(mdwc->dev, "set core clk rate %ld\n",
		mdwc->core_clk_rate);
		mdwc->max_rh_port_speed = USB_SPEED_UNKNOWN;
		}
		}