diff options
author | Tomas Winkler <tomas.winkler@intel.com> | 2015-07-23 12:08:39 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-04 00:21:58 (GMT) |
commit | 688a9cce0c8e9116038586ae1cd6adabb10fa5aa (patch) | |
tree | abd131c323d6e31f0480dede0f41e5421b23d4e6 /drivers/misc/mei/bus.c | |
parent | 48168f4561f479403dbd38379dc8793488a22a6a (diff) | |
download | linux-688a9cce0c8e9116038586ae1cd6adabb10fa5aa.tar.xz |
mei: bus: revamp device matching
mei_cl_device_match now calls mei_cl_device_find that returns
the matching device id in the device id table.
We will utilize the mei_cl_device_find during probing
to locate the matching entry.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/bus.c')
-rw-r--r-- | drivers/misc/mei/bus.c | 63 |
1 files changed, 44 insertions, 19 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index aba7688..4955a09 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -385,39 +385,64 @@ out: } EXPORT_SYMBOL_GPL(mei_cl_disable_device); -static int mei_cl_device_match(struct device *dev, struct device_driver *drv) +/** + * mei_cl_device_find - find matching entry in the driver id table + * + * @cldev: me client device + * @cldrv: me client driver + * + * Return: id on success; NULL if no id is matching + */ +static const +struct mei_cl_device_id *mei_cl_device_find(struct mei_cl_device *cldev, + struct mei_cl_driver *cldrv) { - struct mei_cl_device *cldev = to_mei_cl_device(dev); - struct mei_cl_driver *cldrv = to_mei_cl_driver(drv); const struct mei_cl_device_id *id; const uuid_le *uuid; - const char *name; - - if (!cldev) - return 0; uuid = mei_me_cl_uuid(cldev->me_cl); - name = cldev->name; - - if (!cldrv || !cldrv->id_table) - return 0; id = cldrv->id_table; - while (uuid_le_cmp(NULL_UUID_LE, id->uuid)) { - if (!uuid_le_cmp(*uuid, id->uuid)) { - if (id->name[0]) { - if (!strncmp(name, id->name, sizeof(id->name))) - return 1; - } else { - return 1; - } + + if (!cldev->name[0]) + return id; + + if (!strncmp(cldev->name, id->name, sizeof(id->name))) + return id; } id++; } + return NULL; +} + +/** + * mei_cl_device_match - device match function + * + * @dev: device + * @drv: driver + * + * Return: 1 if matching device was found 0 otherwise + */ +static int mei_cl_device_match(struct device *dev, struct device_driver *drv) +{ + struct mei_cl_device *cldev = to_mei_cl_device(dev); + struct mei_cl_driver *cldrv = to_mei_cl_driver(drv); + const struct mei_cl_device_id *found_id; + + if (!cldev) + return 0; + + if (!cldrv || !cldrv->id_table) + return 0; + + found_id = mei_cl_device_find(cldev, cldrv); + if (found_id) + return 1; + return 0; } |