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| author | Felipe Balbi <balbi@ti.com> | 2014-09-02 14:57:20 -0500 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-09-03 16:50:44 -0500 |
| commit | fed33afce0eda44a46ae24d93aec1b5198c0bac4 (patch) | |
| tree | c283d2fb4ef37f5d2b42e106fc6860c48ee557cb /drivers/usb | |
| parent | fdee4ebac96bb44c9c488fdd830b7cc831cd295d (diff) | |
| download | linux-stable-fed33afce0eda44a46ae24d93aec1b5198c0bac4.tar.gz linux-stable-fed33afce0eda44a46ae24d93aec1b5198c0bac4.tar.bz2 linux-stable-fed33afce0eda44a46ae24d93aec1b5198c0bac4.zip | |
usb: dwc3: core: fix order of PM runtime calls
Currently, we disable pm_runtime before all register
accesses are done, this is dangerous and might lead
to abort exceptions due to the driver trying to access
a register which is clocked by a clock which was long
gated.
Fix that by moving pm_runtime_put_sync() and pm_runtime_disable()
as the last thing we do before returning from our ->remove()
method.
Fixes: 72246da (usb: Introduce DesignWare USB3 DRD Driver)
Cc: <stable@vger.kernel.org> # v3.2+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index b769c1faaf03..a664d5b5bdfd 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -804,15 +804,15 @@ static int dwc3_remove(struct platform_device *pdev) phy_power_off(dwc->usb2_generic_phy); phy_power_off(dwc->usb3_generic_phy); - pm_runtime_put_sync(&pdev->dev); - pm_runtime_disable(&pdev->dev); - dwc3_debugfs_exit(dwc); dwc3_core_exit_mode(dwc); dwc3_event_buffers_cleanup(dwc); dwc3_free_event_buffers(dwc); dwc3_core_exit(dwc); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + return 0; } |