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usb: gadget zero: avoid unnecessary reinit of data in f_sourcesink

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In the IN case, since the USB request is allocated only when
the source/sink function is started and never freed, the USB ept
buffer needs to be initialized only at the beginning. This change
results into a more performant g_zero module, especially when
'pattern=1' is selected.

Signed-off-by: Armando Visconti <armando.visconti@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Armando Visconti 2012-12-13 15:11:19 +01:00 committed by Felipe Balbi
parent 8f900a9a6e
commit 32c9cf22fc
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/gadget/f_sourcesink.c
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@ -531,8 +531,7 @@ static void source_sink_complete(struct usb_ep *ep, struct usb_request *req)
check_read_data(ss, req);
if (pattern != 2)
memset(req->buf, 0x55, req->length);
} else
reinit_write_data(ep, req);
}
break;
/* this endpoint is normally active while we're configured */