From: <Mario.Limonciello@dell.com>
To: <greg@kroah.com>
Cc: <dvhart@infradead.org>, <andy.shevchenko@gmail.com>,
<linux-kernel@vger.kernel.org>,
<platform-driver-x86@vger.kernel.org>, <luto@kernel.org>,
<quasisec@google.com>, <pali.rohar@gmail.com>,
<rjw@rjwysocki.net>, <mjg59@google.com>, <hch@lst.de>,
<gnomes@lxorguk.ukuu.org.uk>
Subject: RE: [PATCH v10 13/15] platform/x86: wmi: create userspace interface for drivers
Date: Fri, 20 Oct 2017 13:54:54 +0000 [thread overview]
Message-ID: <f889aa55ce204843be4bb32f4ae2ee2f@ausx13mpc120.AMER.DELL.COM> (raw)
In-Reply-To: <20171020132242.GB23973@kroah.com>
> -----Original Message-----
> From: Greg KH [mailto:greg@kroah.com]
> Sent: Friday, October 20, 2017 8:23 AM
> To: Limonciello, Mario <Mario_Limonciello@Dell.com>
> Cc: dvhart@infradead.org; Andy Shevchenko <andy.shevchenko@gmail.com>;
> LKML <linux-kernel@vger.kernel.org>; platform-driver-x86@vger.kernel.org; Andy
> Lutomirski <luto@kernel.org>; quasisec@google.com; pali.rohar@gmail.com;
> rjw@rjwysocki.net; mjg59@google.com; hch@lst.de; Alan Cox
> <gnomes@lxorguk.ukuu.org.uk>
> Subject: Re: [PATCH v10 13/15] platform/x86: wmi: create userspace interface for
> drivers
>
> On Thu, Oct 19, 2017 at 12:50:16PM -0500, Mario Limonciello wrote:
> > +static ssize_t wmi_char_read(struct file *filp, char __user *buffer,
> > + size_t length, loff_t *offset)
> > +{
> > + struct wmi_block *wblock = filp->private_data;
> > + size_t count;
> > +
> > + if (*offset != 0)
> > + return 0;
> > +
> > + count = sizeof(wblock->req_buf_size);
> > + count = length < count ? length : count;
> > +
> > + if (copy_to_user(buffer, &wblock->req_buf_size, count))
> > + return -EFAULT;
> > +
> > + *offset = count;
> > + return count;
>
> simple_read_from_buffer()? Library functions are your friend :)
>
Thanks, wasn't aware of it.
next prev parent reply other threads:[~2017-10-20 13:54 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-19 17:50 [PATCH v10 00/15] Introduce support for Dell SMBIOS over WMI Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 01/15] platform/x86: wmi: Add new method wmidev_evaluate_method Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 02/15] platform/x86: dell-wmi: increase severity of some failures Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 03/15] platform/x86: dell-wmi: clean up wmi descriptor check Mario Limonciello
2017-10-19 17:55 ` Pali Rohár
2017-10-19 17:50 ` [PATCH v10 04/15] platform/x86: dell-wmi: don't check length returned Mario Limonciello
2017-10-19 17:56 ` Pali Rohár
2017-10-19 17:50 ` [PATCH v10 05/15] platform/x86: dell-wmi-descriptor: split WMI descriptor into it's own driver Mario Limonciello
2017-10-19 18:06 ` Pali Rohár
2017-10-19 17:50 ` [PATCH v10 06/15] platform/x86: wmi: Don't allow drivers to get each other's GUIDs Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 07/15] platform/x86: dell-smbios: only run if proper oem string is detected Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 08/15] platform/x86: dell-smbios: Add a sysfs interface for SMBIOS tokens Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 09/15] platform/x86: dell-smbios: Introduce dispatcher for SMM calls Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 10/15] platform/x86: dell-smbios-wmi: Add new WMI dispatcher driver Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 11/15] platform/x86: dell-smbios-smm: test for WSMT Mario Limonciello
2017-10-19 18:09 ` Pali Rohár
2017-10-19 18:12 ` Mario.Limonciello
2017-10-19 22:46 ` Darren Hart
2017-10-19 17:50 ` [PATCH v10 12/15] platform/x86: dell-smbios: Add filtering support Mario Limonciello
2018-01-05 11:13 ` Pali Rohár
2018-01-05 14:32 ` Mario.Limonciello
2018-01-05 14:44 ` Pali Rohár
2018-01-05 14:48 ` Mario.Limonciello
2018-01-27 14:51 ` Pali Rohár
2018-01-29 16:22 ` Mario.Limonciello
2018-01-29 16:44 ` Pali Rohár
2018-01-05 14:44 ` Andy Shevchenko
2017-10-19 17:50 ` [PATCH v10 13/15] platform/x86: wmi: create userspace interface for drivers Mario Limonciello
2017-10-20 13:21 ` Greg KH
2017-10-20 13:54 ` Mario.Limonciello
2017-10-20 14:48 ` Christoph Hellwig
2017-10-20 15:07 ` Mario.Limonciello
2017-10-20 15:08 ` Christoph Hellwig
2017-10-20 15:31 ` Mario.Limonciello
2017-10-20 14:57 ` Greg KH
2017-10-20 13:22 ` Greg KH
2017-10-20 13:54 ` Mario.Limonciello [this message]
2017-10-20 13:23 ` Greg KH
2017-10-20 14:15 ` Mario.Limonciello
2017-10-19 17:50 ` [PATCH v10 14/15] platform/x86: dell-smbios-wmi: introduce userspace interface Mario Limonciello
2017-10-19 17:50 ` [PATCH v10 15/15] tools/wmi: add a sample for dell smbios communication over WMI Mario Limonciello
2017-11-09 9:52 ` [PATCH v10 00/15] Introduce support for Dell SMBIOS " Pavel Machek
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