evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

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

Browse source 
commit 1eec2157d8 ("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>
This commit is contained in:
Hemant Kumar 2017-02-07 14:13:58 -08:00
parent 2aa89ab3ff
commit 65719399a2
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/usb/dwc3/dwc3-msm.c
View file

@ -3281,6 +3281,11 @@ 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;
}
}