From 319acdfc064169023cd9ada5085b434fbcdacec2 Mon Sep 17 00:00:00 2001 From: Ruchika Kharwar Date: Fri, 10 Aug 2012 09:58:30 +0300 Subject: [PATCH] usb: host: xhci-plat: use ioremap_nocache Use the ioremap_nocache variant of the ioremap API in order to make sure our memory will be marked uncachable. This patch should be backported to kernels as old as 3.4, that contain the commit 3429e91a661e1f383aecc86c6bbcf65afb15c892 "usb: host: xhci: add platform driver support". Signed-off-by: Ruchika Kharwar Signed-off-by: Felipe Balbi Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org --- drivers/usb/host/xhci-plat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 689bc18b051d..df90fe51b4aa 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -118,7 +118,7 @@ static int xhci_plat_probe(struct platform_device *pdev) goto put_hcd; } - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); if (!hcd->regs) { dev_dbg(&pdev->dev, "error mapping memory\n"); ret = -EFAULT;