diff options
| author | Suresh Mangipudi <smangipudi@nvidia.com> | 2013-01-04 11:49:05 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 12:49:15 -0700 |
| commit | 4cf3b5be9ebc6f20ca62b352ea8191b83216d372 (patch) | |
| tree | 80890c3334f53bd3bed2b36c6dda38b8629487df | |
| parent | 95284e361cddc287b7575e359a94ff54b2548915 (diff) | |
usb: host: tegra: remove dma buffer sync
Remove the dma_sync_* functions for usb transfer when DMA is used.
Bug 953885
Bug 1192878
Change-Id: I12455ef3390799921db6efc2ae901515089fa45d
Signed-off-by: Suresh Mangipudi <smangipudi@nvidia.com>
Reviewed-on: http://git-master/r/189052
Reviewed-by: Hiroshi Doyu <hdoyu@nvidia.com>
Tested-by: Hiroshi Doyu <hdoyu@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>
GVS: Gerrit_Virtual_Submit
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 27 |
1 files changed, 1 insertions, 26 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 4e826162090d..cf28874b8b23 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -2,7 +2,7 @@ * EHCI-compliant USB host controller driver for NVIDIA Tegra SoCs * * Copyright (c) 2010 Google, Inc. - * Copyright (c) 2009-2012 NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2009-2013 NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -145,21 +145,6 @@ static int tegra_ehci_map_urb_for_dma(struct usb_hcd *hcd, ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags); - /* Control packets over dma */ - if (urb->setup_dma) - dma_sync_single_for_device(hcd->self.controller, - urb->setup_dma, sizeof(struct usb_ctrlrequest), - DMA_TO_DEVICE); - - /* urb buffers over dma */ - if (urb->transfer_dma) { - enum dma_data_direction dir; - dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - - dma_sync_single_for_device(hcd->self.controller, - urb->transfer_dma, urb->transfer_buffer_length, dir); - } - if (ret) free_align_buffer(urb, hcd); @@ -169,16 +154,6 @@ static int tegra_ehci_map_urb_for_dma(struct usb_hcd *hcd, static void tegra_ehci_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) { - - if (urb->transfer_dma) { - enum dma_data_direction dir; - dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - if (dir == DMA_FROM_DEVICE) - dma_sync_single_for_cpu(hcd->self.controller, - urb->transfer_dma, urb->transfer_buffer_length, - DMA_FROM_DEVICE); - } - usb_hcd_unmap_urb_for_dma(hcd, urb); free_align_buffer(urb, hcd); } |