Am Freitag, 14. Dezember 2007 03:22:20 schrieb Sarah Sharp:
> Without this fix, the pl2303 usb-serial adapter with chip type_1
> would not suspend properly unless it had been opened first.
>
> A pl2303 type_1 chip will still break if the system is hibernated while the
> RS-232 connector is powered by another system. This was broken before, and a
> reset resume quirk does not fix it. All other suspend, hibernate, and
> autosuspend scenarios work with ATEN pl2303 adaptors with HX and type_1 chips.
>
> Signed-off-by: Sarah Sharp <[EMAIL PROTECTED]>
> ---
> drivers/usb/serial/pl2303.c | 37 ++++++++++++++++++-------------------
> 1 files changed, 18 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
> index 15097a4..ab7f2b0 100644
> --- a/drivers/usb/serial/pl2303.c
> +++ b/drivers/usb/serial/pl2303.c
> @@ -336,6 +336,7 @@ static int pl2303_startup(struct usb_serial *serial)
> {
> struct pl2303_private *priv;
> enum pl2303_type type = type_0;
> + unsigned char buf;
> int i;
>
> if (serial->dev->descriptor.bDeviceClass == 0x02)
> @@ -362,6 +363,22 @@ static int pl2303_startup(struct usb_serial *serial)
> priv->type = type;
> usb_set_serial_port_data(serial->port[i], priv);
> }
> +
> + pl2303_vendor_read(0x8484, 0, serial, &buf);
I am sorry, you can't do this. This is DMA on the stack. You must kmalloc
buf.
Regards
Oliver
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