From fa42474239d7bf5370aac3672cfb6b6b37d7f2dc Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Tue, 19 Feb 2019 23:29:07 -0800 Subject: usb: xhci-hcd: Do not zero out DMA coherent memory Memory returned by dma_alloc_coherent() should already be zeroed out, so there's no need to do this explicitly. Signed-off-by: Andrey Smirnov Signed-off-by: Sascha Hauer --- drivers/usb/host/xhci-hcd.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c index 7cfd74de41..7106a56371 100644 --- a/drivers/usb/host/xhci-hcd.c +++ b/drivers/usb/host/xhci-hcd.c @@ -445,7 +445,6 @@ static struct xhci_virtual_device *xhci_alloc_virtdev(struct xhci_hcd *xhci, vdev->dma_size = sz_ictx + sz_dctx; p = vdev->dma = dma_alloc_coherent(vdev->dma_size, DMA_ADDRESS_BROKEN); - memset(vdev->dma, 0, vdev->dma_size); vdev->out_ctx = p; p += sz_dctx; vdev->in_ctx = p; p += sz_ictx; @@ -1225,7 +1224,6 @@ static void xhci_dma_alloc(struct xhci_hcd *xhci) xhci->dma_size += num_ep * sz_ep; p = xhci->dma = dma_alloc_coherent(xhci->dma_size, DMA_ADDRESS_BROKEN); - memset(xhci->dma, 0, xhci->dma_size); xhci->sp = p; p += sz_sp; xhci->dcbaa = p; p += sz_dca; -- cgit v1.2.3