From: Matthias Kaehlcke <mka@chromium.org>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Douglas Anderson <dianders@chromium.org>,
Manu Gautam <mgautam@codeaurora.org>,
linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Lee Jones <lee.jones@linaro.org>,
linux-kernel@vger.kernel.org,
Matthias Kaehlcke <mka@chromium.org>
Subject: [PATCH] usb: dwc3: qcom: Honor wakeup enabled/disabled state
Date: Tue, 15 Sep 2020 12:31:27 -0700 [thread overview]
Message-ID: <20200915123123.1.I44954d9e1169f2cf5c44e6454d357c75ddfa99a2@changeid> (raw)
The dwc3-qcom currently enables wakeup interrupts unconditionally
when suspending, however this should not be done when wakeup is
disabled (e.g. through the sysfs attribute power/wakeup). Only
enable wakeup interrupts when device_may_wakeup() returns true.
Fixes: a4333c3a6ba9 ("usb: dwc3: Add Qualcomm DWC3 glue driver")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---
drivers/usb/dwc3/dwc3-qcom.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index e1e78e9824b1..56d14c09506d 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -251,8 +251,10 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
for (i = qcom->num_clocks - 1; i >= 0; i--)
clk_disable_unprepare(qcom->clks[i]);
+ if (device_may_wakeup(qcom->dev))
+ dwc3_qcom_enable_interrupts(qcom);
+
qcom->is_suspended = true;
- dwc3_qcom_enable_interrupts(qcom);
return 0;
}
@@ -265,7 +267,8 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
if (!qcom->is_suspended)
return 0;
- dwc3_qcom_disable_interrupts(qcom);
+ if (device_may_wakeup(qcom->dev))
+ dwc3_qcom_disable_interrupts(qcom);
for (i = 0; i < qcom->num_clocks; i++) {
ret = clk_prepare_enable(qcom->clks[i]);
--
2.28.0.618.gf4bc123cb7-goog
next reply other threads:[~2020-09-15 19:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-15 19:31 Matthias Kaehlcke [this message]
2020-09-15 23:50 ` Bjorn Andersson
2021-02-23 17:22 ` Matthias Kaehlcke
2021-03-02 7:06 ` Greg Kroah-Hartman
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