[PATCH 08/10] ath11k: set register access length for MHI driver

From: Manivannan Sadhasivam
Date: Fri Jun 25 2021 - 08:35:20 EST


From: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxx>
Reviewed-by: Hemant Kumar <hemantk@xxxxxxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Acked-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1620330705-40192-5-git-send-email-bbhatt@xxxxxxxxxxxxxx
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
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 27b394d115e2..e097ae52e257 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -330,6 +330,7 @@ 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) {
--
2.25.1