Erratum in Walter Oney's book "Programming the MS Windows Driver Model" 2nd Ed.

Hi folks,

Just a quick check to see whether anyone else has found this, and agrees
that it's just a typo:

I've been developing a multifunction driver in accordance with the
principles laid out in Walter's book, which I am finding to be a very clear
and useful volume. However, there does appear to be a small error in it....
In Chapter 11, where it discusses handling of PnP requests dependent on
whether the IRP concerns the FDO or PDO, Table 11-1 indicates that the
"succeed" action should be taken for IRP_MN_QUERY_DEVICE_TEXT when handled
for a PDO.

When I tried this with the verifier running, a bugcheck ensued:

WDM DRIVER ERROR: [xxxxxx.sys @ 0xF052BF70] Caller has changed the status

field of an IRP it does not understand (Irp = 820EAF48 ).

IRP_MJ_PNP.IRP_MN_QUERY_DEVICE_TEXT(Bogus)


I then took the time to install the examples that come with the book, and
noticed that the MULFUNC example actually performs the "ignore" action, so
I'm assuming that this is just a typo in the book?

MH.

Alexander
Wed Jul 21 10:48:25 CDT 2004

You should set STATUS_SUCCESS if you handle QUERY_DEVICE_TEXT and its
subcode in your PDO. If the subcode is unknown, you should simply complete
the IRP, as all other IRPs you don't handle.

"Martin Harvey (work)" <m.harvey@nospam.snellwilcox.com> wrote in message
news:uyCNPfybEHA.644@tk2msftngp13.phx.gbl...
> Hi folks,
>
> Just a quick check to see whether anyone else has found this, and agrees
> that it's just a typo:
>
> I've been developing a multifunction driver in accordance with the
> principles laid out in Walter's book, which I am finding to be a very
clear
> and useful volume. However, there does appear to be a small error in
it....
> In Chapter 11, where it discusses handling of PnP requests dependent on
> whether the IRP concerns the FDO or PDO, Table 11-1 indicates that the
> "succeed" action should be taken for IRP_MN_QUERY_DEVICE_TEXT when handled
> for a PDO.
>
> When I tried this with the verifier running, a bugcheck ensued:
>
> WDM DRIVER ERROR: [xxxxxx.sys @ 0xF052BF70] Caller has changed the status
>
> field of an IRP it does not understand (Irp = 820EAF48 ).
>
> IRP_MJ_PNP.IRP_MN_QUERY_DEVICE_TEXT(Bogus)
>
>
> I then took the time to install the examples that come with the book, and
> noticed that the MULFUNC example actually performs the "ignore" action, so
> I'm assuming that this is just a typo in the book?
>
> MH.
>
>