Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 325/846] usb: dwc2: do not gate off the hardware if it does not support clock gating | Date | Mon, 24 Jan 2022 19:37:22 +0100 |
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From: Dinh Nguyen <dinguyen@kernel.org>
[ Upstream commit 34146c68083f1aef6709196b3dc888c1ceffd357 ]
We should not be clearing the HCD_FLAG_HW_ACCESSIBLE bit if the hardware does not support clock gating.
Fixes: 50fb0c128b6e ("usb: dwc2: Add clock gating entering flow by system suspend") Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> Link: https://lore.kernel.org/r/20220104135922.734776-1-dinguyen@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/usb/dwc2/hcd.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index a215ec9e172e6..657dbd50faf11 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4403,11 +4403,12 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) * If not hibernation nor partial power down are supported, * clock gating is used to save power. */ - if (!hsotg->params.no_clock_gating) + if (!hsotg->params.no_clock_gating) { dwc2_host_enter_clock_gating(hsotg); - /* After entering suspend, hardware is not accessible */ - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + /* After entering suspend, hardware is not accessible */ + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + } break; default: goto skip_power_saving; -- 2.34.1
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