From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: gregkh@linuxfoundation.org, davem@davemloft.net
Cc: smohanad@codeaurora.org, jhugo@codeaurora.org,
kvalo@codeaurora.org, bjorn.andersson@linaro.org,
hemantk@codeaurora.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH v2 3/7] bus: mhi: core: Initialize bhie field in mhi_cntrl for RDDM capture
Date: Mon, 23 Mar 2020 18:00:58 +0530 [thread overview]
Message-ID: <20200323123102.13992-4-manivannan.sadhasivam@linaro.org> (raw)
In-Reply-To: <20200323123102.13992-1-manivannan.sadhasivam@linaro.org>
The bhie field in mhi_cntrl needs to be initialized to proper register
base in order to make mhi_rddm_prepare() to work. Otherwise,
mhi_rddm_prepare() will cause NULL pointer dereference.
Fixes: 6fdfdd27328c ("bus: mhi: core: Add support for downloading RDDM image during panic")
Reported-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/bus/mhi/core/init.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index d136f6c6ca78..f6e3c16225a7 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -979,7 +979,8 @@ int mhi_prepare_for_power_up(struct mhi_controller *mhi_cntrl)
goto bhie_error;
}
- memset_io(mhi_cntrl->regs + bhie_off + BHIE_RXVECADDR_LOW_OFFS,
+ mhi_cntrl->bhie = mhi_cntrl->regs + bhie_off;
+ memset_io(mhi_cntrl->bhie + BHIE_RXVECADDR_LOW_OFFS,
0, BHIE_RXVECSTATUS_OFFS - BHIE_RXVECADDR_LOW_OFFS +
4);
--
2.17.1
next prev parent reply other threads:[~2020-03-23 12:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-23 12:30 [PATCH v2 0/7] Improvements to MHI Bus Manivannan Sadhasivam
2020-03-23 12:30 ` [PATCH v2 1/7] bus: mhi: core: Pass module owner during client driver registration Manivannan Sadhasivam
2020-03-23 12:30 ` [PATCH v2 2/7] bus: mhi: core: Add support for reading MHI info from device Manivannan Sadhasivam
2020-03-23 14:14 ` Jeffrey Hugo
2020-03-24 5:34 ` Manivannan Sadhasivam
2020-03-23 12:30 ` Manivannan Sadhasivam [this message]
2020-03-23 12:30 ` [PATCH v2 4/7] bus: mhi: core: Drop the references to mhi_dev in mhi_destroy_device() Manivannan Sadhasivam
2020-03-23 12:31 ` [PATCH v2 5/7] bus: mhi: core: Add support for MHI suspend and resume Manivannan Sadhasivam
2020-03-23 12:31 ` [PATCH v2 6/7] net: qrtr: Add MHI transport layer Manivannan Sadhasivam
2020-03-23 12:31 ` [PATCH v2 7/7] net: qrtr: Do not depend on ARCH_QCOM Manivannan Sadhasivam
2020-03-23 16:30 ` Kalle Valo
2020-03-24 5:33 ` Manivannan Sadhasivam
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