linux-kernel - [PATCH 5/5] xhci: Use device_iommu

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Message-Id: <20181204172504.19708-6-joro@8bytes.org>
Date:   Tue,  4 Dec 2018 18:25:04 +0100
From:   Joerg Roedel <joro@...tes.org>
To:     iommu@...ts.linux-foundation.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, Joerg Roedel <jroedel@...e.de>,
        Mathias Nyman <mathias.nyman@...el.com>
Subject: [PATCH 5/5] xhci: Use device_iommu_mapped()

From: Joerg Roedel <jroedel@...e.de>

Replace the dev->iommu_group check with a proper function
call that better reprensents its purpose.

Cc: Mathias Nyman <mathias.nyman@...el.com>
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/usb/host/xhci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index c928dbbff881..5ab97e54d070 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -244,7 +244,7 @@ static void xhci_zero_64b_regs(struct xhci_hcd *xhci)
 	 * an iommu. Doing anything when there is no iommu is definitely
 	 * unsafe...
 	 */
-	if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !dev->iommu_group)
+	if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !device_iommu_mapped(dev))
 		return;
 
 	xhci_info(xhci, "Zeroing 64bit base registers, expecting fault\n");
-- 
2.17.1