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USB: gadget rndis: send notifications

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It turns out that atomic_inc_return() returns the *new* value
not the original one, so the logic in rndis_response_available()
kept the first RNDIS response notification from getting out.
This prevented interoperation with MS-Windows (but not Linux).

Fix this to make RNDIS behave again.

Signed-off-by: Richard Röjfors <richard.rojfors@endian.se>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Richard Röjfors 2008-11-15 19:53:24 -08:00 committed by Greg Kroah-Hartman
parent 9c264521a9
commit ff3495052a
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/f_rndis.c
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@ -302,7 +302,7 @@ static void rndis_response_available(void *_rndis)
__le32 *data = req->buf;
int status;
if (atomic_inc_return(&rndis->notify_count))
if (atomic_inc_return(&rndis->notify_count) != 1)
return;
/* Send RNDIS RESPONSE_AVAILABLE notification; a