[v2,5/6] bus: mhi: pci_generic: Set register access length for MHI driver

Message ID 1620171478-35679-6-git-send-email-bbhatt@codeaurora.org
State Superseded
Headers show
Series
  • BHI/BHIe improvements for MHI power purposes
Related show

Commit Message

Bhaumik Bhatt May 4, 2021, 11:37 p.m.
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(+)

Patch

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) {