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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,
	loic.poulain@linaro.org, linux-wireless@vger.kernel.org,
	kvalo@codeaurora.org, ath11k@lists.infradead.org,
	Bhaumik Bhatt <bbhatt@codeaurora.org>
Subject: [PATCH v2 5/6] bus: mhi: pci_generic: Set register access length for MHI driver
Date: Tue,  4 May 2021 16:37:57 -0700	[thread overview]
Message-ID: <1620171478-35679-6-git-send-email-bbhatt@codeaurora.org> (raw)
In-Reply-To: <1620171478-35679-1-git-send-email-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>
---
 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 7c810f0..fb7889f 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -463,6 +463,7 @@ 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) {
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


  parent reply	other threads:[~2021-05-04 23:38 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-04 23:37 [PATCH v2 0/6] BHI/BHIe improvements for MHI power purposes Bhaumik Bhatt
2021-05-04 23:37 ` [PATCH v2 1/6] bus: mhi: core: Set BHI/BHIe offsets on power up preparation Bhaumik Bhatt
2021-05-04 23:37 ` [PATCH v2 2/6] bus: mhi: core: Set BHI and BHIe pointers to NULL in clean-up Bhaumik Bhatt
2021-05-04 23:37 ` [PATCH v2 3/6] bus: mhi: Add MMIO region length to controller structure Bhaumik Bhatt
2021-05-05 14:37   ` Jeffrey Hugo
2021-05-04 23:37 ` [PATCH v2 4/6] ath11k: set register access length for MHI driver Bhaumik Bhatt
2021-05-04 23:37 ` Bhaumik Bhatt [this message]
2021-05-04 23:37 ` [PATCH v2 6/6] bus: mhi: core: Add range checks for BHI and BHIe Bhaumik Bhatt

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