linux-kernel - Re: [PATCH] Bluetooth: hidp: Fix error checks in hidp_get/set_raw

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Message-ID: <20190906140744.GC14147@kadam>
Date:   Fri, 6 Sep 2019 17:08:28 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Marcel Holtmann <marcel@...tmann.org>
Cc:     Dan Elkouby <streetwalkermc@...il.com>,
        Johan Hedberg <johan.hedberg@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Fabian Henneke <fabian.henneke@...il.com>,
        Brian Norris <computersforpeace@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Andrea Parri <andrea.parri@...rulasolutions.com>,
        linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Bluetooth: hidp: Fix error checks in
 hidp_get/set_raw_report

On Fri, Sep 06, 2019 at 03:56:29PM +0200, Marcel Holtmann wrote:
> Hi Dan,
> 
> > Commit 48d9cc9d85dd ("Bluetooth: hidp: Let hidp_send_message return
> > number of queued bytes") changed hidp_send_message to return non-zero
> > values on success, which some other bits did not expect. This caused
> > spurious errors to be propagated through the stack, breaking some (all?)
> > drivers, such as hid-sony for the Dualshock 4 in Bluetooth mode.
> > 
> > Signed-off-by: Dan Elkouby <streetwalkermc@...il.com>
> > ---
> > net/bluetooth/hidp/core.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> patch has been applied to bluetooth-next tree.
> 

The v2 added an additional fix and used the Fixes tag.  Could you apply
that instead?

regards,
dan carpenter