Messages in this thread Patch in this message |  | | From | Christophe JAILLET <> | Subject | [PATCH 3/3] usb: early: xhci-dbc: Use memcpy_and_pad() | Date | Sun, 29 Jan 2023 19:23:10 +0100 |
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Instead of zeroing some memory and then copying data in part or all of it, use memcpy_and_pad(). This avoids writing some memory twice and should save a few cycles.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- drivers/usb/early/xhci-dbc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c index 965a24e47c0f..341408410ed9 100644 --- a/drivers/usb/early/xhci-dbc.c +++ b/drivers/usb/early/xhci-dbc.c @@ -499,8 +499,7 @@ static int xdbc_bulk_transfer(void *data, int size, bool read) addr = xdbc.in_dma; xdbc.flags |= XDBC_FLAGS_IN_PROCESS; } else { - memset(xdbc.out_buf, 0, XDBC_MAX_PACKET); - memcpy(xdbc.out_buf, data, size); + memcpy_and_pad(xdbc.out_buf, XDBC_MAX_PACKET, data, size, 0); addr = xdbc.out_dma; xdbc.flags |= XDBC_FLAGS_OUT_PROCESS; } -- 2.34.1
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