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mei: bus: whitelist the watchdog client 

The iAMT WD client has to be whitelisted sice it has two connections
and is filtered out by number_of_connections fixup.
Also the API has changed for BDW and SKL but firmware haven't updated
the protocol version.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2016-01-08 00:49:24 +02:00 committed by Greg Kroah-Hartman
parent c9cf20ee45
commit e97cdb303c
1 changed files with 29 additions and 0 deletions
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29
drivers/misc/mei/bus-fixup.c
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@ -35,6 +35,9 @@ static const uuid_le mei_nfc_info_guid = MEI_UUID_NFC_INFO;
#define MEI_UUID_NFC_HCI UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, \
0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c)
#define MEI_UUID_WD UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, \
0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB)
#define MEI_UUID_ANY NULL_UUID_LE
/**
@ -66,6 +69,31 @@ static void blacklist(struct mei_cl_device *cldev)
cldev->do_match = 0;
}
/**
* mei_wd - wd client on the bus, change protocol version
* as the API has changed.
*
* @cldev: me clients device
*/
#if IS_ENABLED(CONFIG_INTEL_MEI_ME)
#include <linux/pci.h>
#include "hw-me-regs.h"
static void mei_wd(struct mei_cl_device *cldev)
{
struct pci_dev *pdev = to_pci_dev(cldev->dev.parent);
dev_dbg(&cldev->dev, "running hook %s\n", __func__);
if (pdev->device == MEI_DEV_ID_WPT_LP ||
pdev->device == MEI_DEV_ID_SPT ||
pdev->device == MEI_DEV_ID_SPT_H)
cldev->me_cl->props.protocol_version = 0x2;
cldev->do_match = 1;
}
#else
static inline void mei_wd(struct mei_cl_device *cldev) {}
#endif /* CONFIG_INTEL_MEI_ME */
struct mei_nfc_cmd {
u8 command;
u8 status;
@ -280,6 +308,7 @@ static struct mei_fixup {
MEI_FIXUP(MEI_UUID_ANY, number_of_connections),
MEI_FIXUP(MEI_UUID_NFC_INFO, blacklist),
MEI_FIXUP(MEI_UUID_NFC_HCI, mei_nfc),
MEI_FIXUP(MEI_UUID_WD, mei_wd),
};
/**