usb: cdns3: optimize OUT transfer by copying only actual received data

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Previously, the entire length of the request, which is equal to or greater
than the actual data, was dma synced and memcpy when using the bounce
buffer. Actually only the actual data indicated by request->actual need be
synced and copied.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20230518204947.3770236-2-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Frank Li 2023-05-18 16:49:46 -04:00 • committed by Greg Kroah-Hartman

parent 2a1c4639d6

commit 3124387537

1 changed files with 2 additions and 2 deletions

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drivers/usb/cdns3/cdns3-gadget.c

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