usb: dwc3: qcom: fix runtime PM wakeup

A device must enable wakeups during runtime suspend regardless of
whether it is capable and allowed to wake the system up from system
suspend.

Fixes: 2664deb09306 ("usb: dwc3: qcom: Honor wakeup enabled/disabled state")
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220804151001.23612-6-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 6884026..05b4666 100644 (file)
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -397,7 +397,7 @@ static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
        dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq, 0);
 }
 
-static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
+static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup)
 {
        u32 val;
        int i, ret;
@@ -416,7 +416,7 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
        if (ret)
                dev_warn(qcom->dev, "failed to disable interconnect: %d\n", ret);
 
-       if (device_may_wakeup(qcom->dev)) {
+       if (wakeup) {
                qcom->usb2_speed = dwc3_qcom_read_usb2_speed(qcom);
                dwc3_qcom_enable_interrupts(qcom);
        }
@@ -426,7 +426,7 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
        return 0;
 }
 
-static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
+static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup)
 {
        int ret;
        int i;
@@ -434,7 +434,7 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
        if (!qcom->is_suspended)
                return 0;
 
-       if (device_may_wakeup(qcom->dev))
+       if (wakeup)
                dwc3_qcom_disable_interrupts(qcom);
 
        for (i = 0; i < qcom->num_clocks; i++) {
@@ -945,9 +945,11 @@ static int dwc3_qcom_remove(struct platform_device *pdev)
 static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev)
 {
        struct dwc3_qcom *qcom = dev_get_drvdata(dev);
+       bool wakeup = device_may_wakeup(dev);
        int ret = 0;
 
-       ret = dwc3_qcom_suspend(qcom);
+
+       ret = dwc3_qcom_suspend(qcom, wakeup);
        if (!ret)
                qcom->pm_suspended = true;
 
@@ -957,9 +959,10 @@ static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev)
 static int __maybe_unused dwc3_qcom_pm_resume(struct device *dev)
 {
        struct dwc3_qcom *qcom = dev_get_drvdata(dev);
+       bool wakeup = device_may_wakeup(dev);
        int ret;
 
-       ret = dwc3_qcom_resume(qcom);
+       ret = dwc3_qcom_resume(qcom, wakeup);
        if (!ret)
                qcom->pm_suspended = false;
 
@@ -970,14 +973,14 @@ static int __maybe_unused dwc3_qcom_runtime_suspend(struct device *dev)
 {
        struct dwc3_qcom *qcom = dev_get_drvdata(dev);
 
-       return dwc3_qcom_suspend(qcom);
+       return dwc3_qcom_suspend(qcom, true);
 }
 
 static int __maybe_unused dwc3_qcom_runtime_resume(struct device *dev)
 {
        struct dwc3_qcom *qcom = dev_get_drvdata(dev);
 
-       return dwc3_qcom_resume(qcom);
+       return dwc3_qcom_resume(qcom, true);
 }
 
 static const struct dev_pm_ops dwc3_qcom_dev_pm_ops = {