From: Hans de Goede <hdegoede@redhat.com>
To: Henning Schild <henning.schild@siemens.com>,
linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org,
platform-driver-x86@vger.kernel.org,
linux-watchdog@vger.kernel.org
Cc: Srikanth Krishnakar <skrishnakar@gmail.com>,
Jan Kiszka <jan.kiszka@siemens.com>,
Gerd Haeussler <gerd.haeussler.ext@siemens.com>,
Guenter Roeck <linux@roeck-us.net>,
Wim Van Sebroeck <wim@linux-watchdog.org>,
Mark Gross <mgross@linux.intel.com>, Pavel Machek <pavel@ucw.cz>
Subject: Re: [PATCH 1/4] platform/x86: simatic-ipc: add main driver for Siemens devices
Date: Thu, 4 Mar 2021 15:03:43 +0100 [thread overview]
Message-ID: <ed715381-016a-5bf7-3cdb-d340747c4498@redhat.com> (raw)
In-Reply-To: <20210302163309.25528-2-henning.schild@siemens.com>
Hi,
On 3/2/21 5:33 PM, Henning Schild wrote:
<snip>
> +static inline u32 simatic_ipc_get_station_id(u8 *data)
> +{
> + u32 station_id = SIMATIC_IPC_INVALID_STATION_ID;
> + int i;
> + struct {
> + u8 type; /* type (0xff = binary) */
> + u8 len; /* len of data entry */
> + u8 reserved[3];
> + u32 station_id; /* station id (LE) */
> + } __packed * data_entry = (void *)data;
> +
> + /* find 4th entry in OEM data */
> + for (i = 0; i < 3; i++)
> + data_entry = (void *)((u8 *)(data_entry) + data_entry->len);
> +
> + /* decode station id */
> + if (data_entry && data_entry->type == 0xff && data_entry->len == 9)
> + station_id = le32_to_cpu(data_entry->station_id);
> +
> + return station_id;
> +}
> +
> +static inline void
> +simatic_ipc_find_dmi_entry_helper(const struct dmi_header *dh, void *_data)
> +{
> + u32 *id = _data;
> +
> + if (dh->type != DMI_ENTRY_OEM)
> + return;
> +
> + *id = simatic_ipc_get_station_id((u8 *)dh + sizeof(struct dmi_header));
> +}
Please take dh->length into account here and make sure that you don't walk
past the end of the DMI tables during the parsing here.
Regards,
Hans
> +
> +#endif /* __PLATFORM_DATA_X86_SIMATIC_IPC_H */
>
next prev parent reply other threads:[~2021-03-04 14:06 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-02 16:33 [PATCH 0/4] add device drivers for Siemens Industrial PCs Henning Schild
2021-03-02 16:33 ` [PATCH 1/4] platform/x86: simatic-ipc: add main driver for Siemens devices Henning Schild
2021-03-04 10:11 ` Andy Shevchenko
2021-03-04 13:47 ` Hans de Goede
2021-03-05 15:42 ` Andy Shevchenko
2021-03-05 16:14 ` Hans de Goede
2021-03-05 16:25 ` Andy Shevchenko
2021-03-05 16:36 ` Hans de Goede
2021-03-05 16:41 ` Andy Shevchenko
2021-03-05 16:47 ` Andy Shevchenko
2021-03-05 16:42 ` Henning Schild
2021-03-05 17:17 ` Andy Shevchenko
2021-03-05 17:44 ` Andy Shevchenko
2021-03-08 12:57 ` Henning Schild
2021-03-08 13:43 ` Andy Shevchenko
2021-03-04 19:42 ` Henning Schild
2021-03-05 15:46 ` Andy Shevchenko
2021-03-05 16:31 ` Henning Schild
2021-03-04 14:03 ` Hans de Goede [this message]
2021-03-02 16:33 ` [PATCH 2/4] leds: simatic-ipc-leds: add new driver for Siemens Industial PCs Henning Schild
2021-03-02 20:54 ` Pavel Machek
2021-03-03 13:11 ` Henning Schild
2021-03-03 19:31 ` Pavel Machek
2021-03-03 20:48 ` Henning Schild
2021-03-03 20:56 ` Henning Schild
2021-03-05 18:25 ` Henning Schild
2021-03-06 12:54 ` Henning Schild
2021-03-06 13:06 ` Henning Schild
2021-03-15 11:49 ` Pavel Machek
2021-03-15 11:41 ` Pavel Machek
2021-03-03 17:37 ` Henning Schild
2021-03-03 17:40 ` Pavel Machek
2021-03-03 18:49 ` Henning Schild
2021-03-03 19:27 ` Pavel Machek
2021-03-02 16:33 ` [PATCH 3/4] watchdog: simatic-ipc-wdt: add new driver for Siemens Industrial PCs Henning Schild
2021-03-02 18:38 ` Guenter Roeck
2021-03-03 14:21 ` Henning Schild
2021-03-03 14:49 ` Jan Kiszka
2021-03-08 15:20 ` Henning Schild
[not found] ` <CAHp75VdUXWDg-2o8fmeo7EoMtRLfCnFOw5ptwjXTv9fKMmHv2A@mail.gmail.com>
2021-03-04 9:00 ` Henning Schild
2021-03-02 16:33 ` [PATCH 4/4] platform/x86: pmc_atom: improve critclk_systems matching for Siemens PCs Henning Schild
2021-03-04 9:50 ` Andy Shevchenko
2021-03-04 10:19 ` [PATCH 0/4] add device drivers for Siemens Industrial PCs Andy Shevchenko
2021-03-04 10:20 ` Andy Shevchenko
2021-03-04 19:26 ` Henning Schild
2021-03-04 19:14 ` Henning Schild
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