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| author | Pratyush Anand <pratyush.anand@st.com> | 2012-08-10 13:42:16 +0530 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-09-06 19:52:24 +0300 |
| commit | 0416e494ce7dc84e2719bc9fb7daecb330476074 (patch) | |
| tree | a91cce26bd581455018f7f3cf0ca432e4fd4f0bc /drivers/usb/usb-skeleton.c | |
| parent | ea0e627623e236e4cbec9f44b4a755bc4a4b852d (diff) | |
| download | talos-op-linux-0416e494ce7dc84e2719bc9fb7daecb330476074.tar.gz talos-op-linux-0416e494ce7dc84e2719bc9fb7daecb330476074.zip | |
usb: dwc3: ep0: correct cache sync issue in case of ep0_bounced
In case of ep0 out, if length is not aligned to maxpacket size then we use
dwc->ep_bounce_addr for dma transfer and not request->dma. Since, we have
alreday done memcpy from dwc->ep0_bounce to request->buf, so we do not need to
issue cache sync function. In fact, cache sync function will bring wrong data
in request->buf from request->dma in this scenario.
So, cache sync function must not be executed in case of ep0 bounced.
Cc: <stable@vger.kernel.org> # v3.4 v3.5
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/usb-skeleton.c')
0 files changed, 0 insertions, 0 deletions
