linux-kernel - [PATCH v4 4/6] ath11k: set register access length for MHI driver

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Message-Id: <1620329545-32328-5-git-send-email-bbhatt@qti.qualcomm.com>
Date:   Thu,  6 May 2021 12:32:23 -0700
From:   Bhaumik Bhatt <bbhatt@....qualcomm.com>
To:     manivannan.sadhasivam@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, hemantk@...eaurora.org,
        jhugo@...eaurora.org, linux-kernel@...r.kernel.org,
        loic.poulain@...aro.org, linux-wireless@...r.kernel.org,
        kvalo@...eaurora.org, ath11k@...ts.infradead.org,
        Bhaumik Bhatt <bbhatt@...eaurora.org>
Subject: [PATCH v4 4/6] ath11k: set register access length for MHI driver

From: Bhaumik Bhatt <bbhatt@...eaurora.org>

MHI driver requires register space length to add range checks and
prevent memory region accesses outside of that for MMIO space.
Set it before registering the MHI controller.

Signed-off-by: Bhaumik Bhatt <bbhatt@...eaurora.org>
Reviewed-by: Hemant Kumar <hemantk@...eaurora.org>
---
 drivers/net/wireless/ath/ath11k/mhi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index 09858e5..c0f013c 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -235,6 +235,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci)
 	mhi_ctrl->cntrl_dev = ab->dev;
 	mhi_ctrl->fw_image = ab_pci->amss_path;
 	mhi_ctrl->regs = ab->mem;
+	mhi_ctrl->reg_len = ab->mem_len;
 
 	ret = ath11k_mhi_get_msi(ab_pci);
 	if (ret) {
-- 
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