64 lines
1.9 KiB
Diff
64 lines
1.9 KiB
Diff
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From 72fc7d7d977b1d64930bb0aebaae4ba5546e9e2e Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megi@xff.cz>
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Date: Mon, 5 Sep 2022 01:02:15 +0200
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Subject: [PATCH 354/391] usb: dwc3: Track the power state of usb3_generic_phy
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We will need to manage power state of this phy inisde set_mode work,
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without any ability to perform recovery if power on fails, so we'll
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need to track result of power on separately, to be able to balance
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the phy on/off calls.
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Signed-off-by: Ondrej Jirman <megi@xff.cz>
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---
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drivers/usb/dwc3/core.c | 7 ++++++-
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drivers/usb/dwc3/core.h | 1 +
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2 files changed, 7 insertions(+), 1 deletion(-)
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diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
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index 476b63618..5655569b5 100644
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--- a/drivers/usb/dwc3/core.c
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+++ b/drivers/usb/dwc3/core.c
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@@ -844,7 +844,9 @@ static void dwc3_core_exit(struct dwc3 *dwc)
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usb_phy_set_suspend(dwc->usb2_phy, 1);
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usb_phy_set_suspend(dwc->usb3_phy, 1);
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phy_power_off(dwc->usb2_generic_phy);
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- phy_power_off(dwc->usb3_generic_phy);
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+ if (dwc->usb3_phy_powered)
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+ phy_power_off(dwc->usb3_generic_phy);
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+ dwc->usb3_phy_powered = false;
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usb_phy_shutdown(dwc->usb2_phy);
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usb_phy_shutdown(dwc->usb3_phy);
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@@ -1176,6 +1178,8 @@ static int dwc3_core_init(struct dwc3 *dwc)
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if (ret < 0)
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goto err3;
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+ dwc->usb3_phy_powered = true;
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+
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ret = dwc3_event_buffers_setup(dwc);
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if (ret) {
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dev_err(dwc->dev, "failed to setup event buffers\n");
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@@ -1298,6 +1302,7 @@ static int dwc3_core_init(struct dwc3 *dwc)
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err4:
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phy_power_off(dwc->usb3_generic_phy);
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+ dwc->usb3_phy_powered = false;
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err3:
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phy_power_off(dwc->usb2_generic_phy);
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diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
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index 8f9959ba9..189b436a9 100644
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--- a/drivers/usb/dwc3/core.h
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+++ b/drivers/usb/dwc3/core.h
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@@ -1159,6 +1159,7 @@ struct dwc3 {
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struct phy *usb2_generic_phy;
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struct phy *usb3_generic_phy;
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+ bool usb3_phy_powered;
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bool phys_ready;
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--
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2.35.3
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