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Commit 7105034e authored by Manu Gautam's avatar Manu Gautam
Browse files

mhi: core: Add checks for bhi and bhie offsets 



Bail out if device returns invalid bhi/bhie offsets.

Change-Id: Ifc92c53a4c1f7c951721cbec0b1d7285cf19cd72
Signed-off-by: default avatarManu Gautam <mgautam@codeaurora.org>
parent 62777520

drivers/bus/mhi/core/mhi_pm.c

+12 −0
Original line number Diff line number Diff line
@@ -947,6 +947,12 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl) 
		goto error_bhi_offset;

	}



	if (val >= mhi_cntrl->len) {

		write_unlock_irq(&mhi_cntrl->pm_lock);

		MHI_ERR("Invalid bhi offset:%x\n", val);

		goto error_bhi_offset;

	}



	mhi_cntrl->bhi = mhi_cntrl->regs + val;



	/* setup bhie offset if not set */
@@ -958,6 +964,12 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl) 
			goto error_bhi_offset;

		}



		if (val >= mhi_cntrl->len) {

			write_unlock_irq(&mhi_cntrl->pm_lock);

			MHI_ERR("Invalid bhie offset:%x\n", val);

			goto error_bhi_offset;

		}



		mhi_cntrl->bhie = mhi_cntrl->regs + val;

	}