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usb: early: xhci-dbc: Use memcpy_and_pad()

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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>
Link: https://lore.kernel.org/r/b447a7e9778d3f9e6997eb9494f1687dc2d5d3bf.1675016180.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christophe JAILLET 2023-01-29 19:23:10 +01:00 committed by Greg Kroah-Hartman
parent e662c16f82
commit 49814e2c9c
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/early/xhci-dbc.c
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@ -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;
}