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| author | Mian Yousaf Kaukab <yousaf.kaukab@intel.com> | 2015-01-30 09:09:31 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-01-30 10:31:13 -0600 |
| commit | 7d24c1b5a77c71d885fca047d1f25721f6b366e7 (patch) | |
| tree | d795985ed06c67578f3df6971f0785d84149a1ab /drivers/usb/dwc2/core.h | |
| parent | d7c747c590a98d2d75e4c2c97c875f0dcd5743ee (diff) | |
| download | lwn-7d24c1b5a77c71d885fca047d1f25721f6b366e7.tar.gz lwn-7d24c1b5a77c71d885fca047d1f25721f6b366e7.zip | |
usb: dwc2: gadget: add unaligned buffers support
When using DMA, dwc2 requires buffers to be 4 bytes aligned. Use
bounce buffers if they are not.
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2/core.h')
| -rw-r--r-- | drivers/usb/dwc2/core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index c750fd3d88b3..485b195126e7 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -158,10 +158,12 @@ struct s3c_hsotg_ep { * struct s3c_hsotg_req - data transfer request * @req: The USB gadget request * @queue: The list of requests for the endpoint this is queued for. + * @saved_req_buf: variable to save req.buf when bounce buffers are used. */ struct s3c_hsotg_req { struct usb_request req; struct list_head queue; + void *saved_req_buf; }; #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) |