From: Oliver Neukum <oneukum@suse.com>
To: Petr Tesarik <PTesarik@suse.com>
Cc: Johan Hovold <johan@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
PetrTesarik <ptesarik@suse.cz>,
open list <linux-kernel@vger.kernel.org>,
"open list:USB SERIAL SUBSYSTEM" <linux-usb@vger.kernel.org>
Subject: Re: [PATCH 3/4] cp210x: Store part number
Date: Mon, 27 Jul 2015 11:29:17 +0200 [thread overview]
Message-ID: <1437989357.32457.3.camel@suse.com> (raw)
In-Reply-To: <20150727085039.1627db72@hananiah.suse.cz>
On Mon, 2015-07-27 at 08:50 +0200, Petr Tesarik wrote:
> I don't understand. While you're right that I copied this part from
> Sillicon Labs' driver without much thinking, and &spriv->bPartNumber
> can be used directly, I can't see any DMA on stack. FWIW
> cp210x_control_msg always allocates a buffer using kcalloc:
>
> buf = kcalloc(length, sizeof(__le32), GFP_KERNEL);
> /* ... */
> result = usb_control_msg(serial->dev,
> usb_rcvctrlpipe(serial->dev, 0),
> request, requesttype, value,
> spriv->bInterfaceNumber, buf, size,
> timeout);
>
> Is that what you mean?
Yes, sorry, that part wasn't so clear from the previous patch.
Sorry
Oliver
next prev parent reply other threads:[~2015-07-27 9:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-24 6:48 [PATCH 0/4] Show CP210x part number in sysfs Petr Tesarik
2015-07-24 6:48 ` [PATCH 1/4] cp210x: Replace USB magic numbers with symbolic names Petr Tesarik
2015-07-24 6:48 ` [PATCH 2/4] cp210x: Unify code for set/get config control messages Petr Tesarik
2015-07-30 17:01 ` Johan Hovold
2015-07-24 6:48 ` [PATCH 3/4] cp210x: Store part number Petr Tesarik
2015-07-26 13:32 ` Oliver Neukum
2015-07-27 6:50 ` Petr Tesarik
2015-07-27 9:29 ` Oliver Neukum [this message]
2015-07-24 6:48 ` [PATCH 4/4] cp210x: Expose the part number in sysfs Petr Tesarik
2015-07-24 18:17 ` Greg Kroah-Hartman
2015-07-24 21:00 ` Petr Tesarik
2015-07-24 21:33 ` Greg Kroah-Hartman
2015-07-24 21:46 ` Petr Tesarik
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1437989357.32457.3.camel@suse.com \
--to=oneukum@suse.com \
--cc=PTesarik@suse.com \
--cc=gregkh@linuxfoundation.org \
--cc=johan@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=ptesarik@suse.cz \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.