From: Bhaumik Bhatt <bbhatt@qti.qualcomm.com>
To: manivannan.sadhasivam@linaro.org
Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org,
jhugo@codeaurora.org, linux-kernel@vger.kernel.org,
loic.poulain@linaro.org, linux-wireless@vger.kernel.org,
kvalo@codeaurora.org, ath11k@lists.infradead.org,
Bhaumik Bhatt <bbhatt@codeaurora.org>
Subject: [PATCH v4 2/6] bus: mhi: core: Set BHI and BHIe pointers to NULL in clean-up
Date: Thu, 6 May 2021 12:32:21 -0700 [thread overview]
Message-ID: <1620329545-32328-3-git-send-email-bbhatt@qti.qualcomm.com> (raw)
In-Reply-To: <1620329545-32328-1-git-send-email-bbhatt@qti.qualcomm.com>
From: Bhaumik Bhatt <bbhatt@codeaurora.org>
Set the BHI and BHIe pointers to NULL as part of clean-up. This
makes sure that stale pointers are not accessed after powering
MHI down.
Suggested-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
---
drivers/bus/mhi/core/init.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index 11c7a3d..1cc2f22 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -1132,6 +1132,9 @@ void mhi_unprepare_after_power_down(struct mhi_controller *mhi_cntrl)
mhi_cntrl->rddm_image = NULL;
}
+ mhi_cntrl->bhi = NULL;
+ mhi_cntrl->bhie = NULL;
+
mhi_deinit_dev_ctxt(mhi_cntrl);
}
EXPORT_SYMBOL_GPL(mhi_unprepare_after_power_down);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2021-05-06 19:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-06 19:32 [PATCH v4 0/6] BHI/BHIe improvements for MHI power purposes Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 1/6] bus: mhi: core: Set BHI/BHIe offsets on power up preparation Bhaumik Bhatt
2021-05-06 19:32 ` Bhaumik Bhatt [this message]
2021-05-06 19:32 ` [PATCH v4 3/6] bus: mhi: Add MMIO region length to controller structure Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 4/6] ath11k: set register access length for MHI driver Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 5/6] bus: mhi: pci_generic: Set " Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 6/6] bus: mhi: core: Add range checks for BHI and BHIe Bhaumik Bhatt
2021-05-06 19:51 [PATCH v4 0/6] BHI/BHIe improvements for MHI power purposes Bhaumik Bhatt
2021-05-06 19:51 ` [PATCH v4 2/6] bus: mhi: core: Set BHI and BHIe pointers to NULL in clean-up Bhaumik Bhatt
2021-05-21 13:37 ` Manivannan Sadhasivam
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