From: Jeffrey Hugo <jhugo@codeaurora.org>
To: manivannan.sadhasivam@linaro.org, hemantk@codeaurora.org
Cc: bbhatt@codeaurora.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org, Jeffrey Hugo <jhugo@codeaurora.org>
Subject: [PATCH v3 1/6] bus: mhi: core: Make sure to powerdown if mhi_sync_power_up fails
Date: Mon, 27 Apr 2020 09:59:08 -0600 [thread overview]
Message-ID: <1588003153-13139-2-git-send-email-jhugo@codeaurora.org> (raw)
In-Reply-To: <1588003153-13139-1-git-send-email-jhugo@codeaurora.org>
Powerdown is necessary if mhi_sync_power_up fails due to a timeout, to
clean up the resources. Otherwise a BUG could be triggered when
attempting to clean up MSIs because the IRQ is still active from a
request_irq().
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
---
drivers/bus/mhi/core/pm.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
index 52690cb..dc83d65 100644
--- a/drivers/bus/mhi/core/pm.c
+++ b/drivers/bus/mhi/core/pm.c
@@ -902,7 +902,11 @@ int mhi_sync_power_up(struct mhi_controller *mhi_cntrl)
MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state),
msecs_to_jiffies(mhi_cntrl->timeout_ms));
- return (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -EIO;
+ ret = (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -ETIMEDOUT;
+ if (ret)
+ mhi_power_down(mhi_cntrl, false);
+
+ return ret;
}
EXPORT_SYMBOL(mhi_sync_power_up);
--
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2020-04-27 15:59 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-27 15:59 [PATCH v3 0/6] Misc MHI fixes Jeffrey Hugo
2020-04-27 15:59 ` Jeffrey Hugo [this message]
2020-04-28 18:52 ` [PATCH v3 1/6] bus: mhi: core: Make sure to powerdown if mhi_sync_power_up fails Hemant Kumar
2020-04-30 16:55 ` Manivannan Sadhasivam
2020-04-27 15:59 ` [PATCH v3 2/6] bus: mhi: core: Remove link_status() callback Jeffrey Hugo
2020-04-28 18:54 ` Hemant Kumar
2020-04-27 15:59 ` [PATCH v3 3/6] bus: mhi: core: Offload register accesses to the controller Jeffrey Hugo
2020-04-28 18:56 ` Hemant Kumar
2020-04-30 16:57 ` Manivannan Sadhasivam
2020-04-27 15:59 ` [PATCH v3 4/6] bus: mhi: core: Fix typo in comment Jeffrey Hugo
2020-04-28 18:56 ` Hemant Kumar
2020-04-30 16:59 ` Manivannan Sadhasivam
2020-04-27 15:59 ` [PATCH v3 5/6] bus: mhi: core: Handle syserr during power_up Jeffrey Hugo
2020-04-27 15:59 ` [PATCH v3 6/6] bus: mhi: core: Fix channel device name conflict Jeffrey Hugo
2020-04-28 18:57 ` Hemant Kumar
2020-04-30 17:01 ` Manivannan Sadhasivam
2020-04-30 17:20 ` [PATCH v3 0/6] Misc MHI fixes Manivannan Sadhasivam
2020-04-30 17:54 ` Jeffrey Hugo
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