From: Bhaumik Bhatt <bbhatt@codeaurora.org>
To: manivannan.sadhasivam@linaro.org
Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org,
jhugo@codeaurora.org, linux-kernel@vger.kernel.org,
Bhaumik Bhatt <bbhatt@codeaurora.org>
Subject: [PATCH v7 04/11] bus: mhi: core: Trigger host resume if suspended during mhi_device_get()
Date: Mon, 10 Aug 2020 15:00:58 -0700 [thread overview]
Message-ID: <1597096865-19636-5-git-send-email-bbhatt@codeaurora.org> (raw)
In-Reply-To: <1597096865-19636-1-git-send-email-bbhatt@codeaurora.org>
It is possible that the host may be suspending or suspended and may
not allow an outgoing device wake assert immediately if a client has
requested for it. Ensure that the host wakes up and allows for it so
the client does not have to wait for an external trigger or an
outgoing packet to be queued for the host resume to occur.
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/bus/mhi/core/pm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
index b227d41..27bb471 100644
--- a/drivers/bus/mhi/core/pm.c
+++ b/drivers/bus/mhi/core/pm.c
@@ -1112,6 +1112,9 @@ void mhi_device_get(struct mhi_device *mhi_dev)
mhi_dev->dev_wake++;
read_lock_bh(&mhi_cntrl->pm_lock);
+ if (MHI_PM_IN_SUSPEND_STATE(mhi_cntrl->pm_state))
+ mhi_trigger_resume(mhi_cntrl);
+
mhi_cntrl->wake_get(mhi_cntrl, true);
read_unlock_bh(&mhi_cntrl->pm_lock);
}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2020-08-10 22:01 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 22:00 [PATCH v7 00/11] Introduce features and debugfs/sysfs entries for MHI Bhaumik Bhatt
2020-08-10 22:00 ` [PATCH v7 01/11] bus: mhi: core: Remove double occurrence for mhi_ctrl_ev_task() declaration Bhaumik Bhatt
2020-08-10 22:00 ` [PATCH v7 02/11] bus: mhi: core: Abort suspends due to outgoing pending packets Bhaumik Bhatt
2020-08-10 22:00 ` [PATCH v7 03/11] bus: mhi: core: Use helper API to trigger a non-blocking host resume Bhaumik Bhatt
2020-08-10 22:00 ` Bhaumik Bhatt [this message]
2020-08-10 22:00 ` [PATCH v7 05/11] bus: mhi: core: Use generic name field for an MHI device Bhaumik Bhatt
2020-08-10 22:01 ` [PATCH v7 06/11] bus: mhi: core: Introduce helper function to check device state Bhaumik Bhatt
2020-08-10 22:01 ` [PATCH v7 07/11] bus: mhi: core: Introduce counters to track MHI device state transitions Bhaumik Bhatt
2020-08-10 22:01 ` [PATCH v7 08/11] bus: mhi: core: Introduce debugfs entries for MHI Bhaumik Bhatt
2020-08-11 0:30 ` kernel test robot
2020-08-11 6:24 ` Manivannan Sadhasivam
2020-08-10 22:01 ` [PATCH v7 09/11] bus: mhi: core: Read and save device hardware information from BHI Bhaumik Bhatt
2020-08-10 22:01 ` [PATCH v7 10/11] bus: mhi: core: Introduce APIs to allocate and free the MHI controller Bhaumik Bhatt
2020-08-10 22:01 ` [PATCH v7 11/11] bus: mhi: core: Introduce sysfs entries for MHI Bhaumik Bhatt
2020-08-11 6:18 ` Manivannan Sadhasivam
2020-08-11 6:26 ` [PATCH v7 00/11] Introduce features and debugfs/sysfs " Manivannan Sadhasivam
2020-08-11 17:53 ` bbhatt
2020-08-18 9:52 ` Manivannan Sadhasivam
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