usb: pch_udc: Fixed issue which does not work with g_serial

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This PCH_UDC driver does not work normally when "Serial gadget" is used.
The receiving data of control transmission (EP0 Control OUT Transaction)
has not received correctly.

This patch fixed this issue.
The following was modified.
 - The buffer size.
 - The change processing of a receiving buffer
   (The temporary buffer and the buffer prepared by gadget).
 - The setup processing of a DMA descriptor.

Currently the PCH_UDC driver can work normally with "Serial gadget"
or "File-backed Storage Gadget".

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

...

This commit is contained in:

Toshiharu Okada 2010-12-29 10:07:33 +09:00 • committed by Greg Kroah-Hartman

parent 956227120f

commit abab0c67c0

1 changed files with 67 additions and 50 deletions

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117

drivers/usb/gadget/pch_udc.c

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