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From:   Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To:     gregkh@linuxfoundation.org
Cc:     hemantk@codeaurora.org, bbhatt@codeaurora.org,
        linux-arm-msm@vger.kernel.org, jhugo@codeaurora.org,
        linux-kernel@vger.kernel.org, loic.poulain@linaro.org,
        kvalo@codeaurora.org, ath11k@lists.infradead.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH 09/10] bus: mhi: pci_generic: Set register access length for MHI driver
Date:   Fri, 25 Jun 2021 18:03:54 +0530
Message-Id: <20210625123355.11578-10-manivannan.sadhasivam@linaro.org>
In-Reply-To: <20210625123355.11578-1-manivannan.sadhasivam@linaro.org>
References: <20210625123355.11578-1-manivannan.sadhasivam@linaro.org>
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From: Bhaumik Bhatt <bbhatt@codeaurora.org>

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

Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1620330705-40192-6-git-send-email-bbhatt@codeaurora.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/bus/mhi/pci_generic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
index 89f71e6db23f..8bc6149249e3 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -508,6 +508,7 @@ static int mhi_pci_claim(struct mhi_controller *mhi_cntrl,
 		return err;
 	}
 	mhi_cntrl->regs = pcim_iomap_table(pdev)[bar_num];
+	mhi_cntrl->reg_len = pci_resource_len(pdev, bar_num);
 
 	err = pci_set_dma_mask(pdev, dma_mask);
 	if (err) {
-- 
2.25.1