[S390] css: Use css_device_id for bus matching.
css_device_id exists, so use it for determining the right driver (and add a match_flags which is always 1 for valid types). Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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@ -850,19 +850,16 @@ int sch_is_pseudo_sch(struct subchannel *sch)
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return sch == to_css(sch->dev.parent)->pseudo_subchannel;
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}
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/*
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* find a driver for a subchannel. They identify by the subchannel
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* type with the exception that the console subchannel driver has its own
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* subchannel type although the device is an i/o subchannel
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*/
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static int
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css_bus_match (struct device *dev, struct device_driver *drv)
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static int css_bus_match(struct device *dev, struct device_driver *drv)
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{
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struct subchannel *sch = to_subchannel(dev);
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struct css_driver *driver = to_cssdriver(drv);
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struct css_device_id *id;
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if (sch->st == driver->subchannel_type)
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for (id = driver->subchannel_type; id->match_flags; id++) {
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if (sch->st == id->type)
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return 1;
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}
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return 0;
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}
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@ -75,7 +75,7 @@ struct chp_link;
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*/
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struct css_driver {
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struct module *owner;
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unsigned int subchannel_type;
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struct css_device_id *subchannel_type;
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struct device_driver drv;
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void (*irq)(struct subchannel *);
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int (*chp_event)(struct subchannel *, struct chp_link *, int);
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@ -131,9 +131,15 @@ static int io_subchannel_sch_event(struct subchannel *, int);
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static int io_subchannel_chp_event(struct subchannel *, struct chp_link *,
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int);
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static struct css_device_id io_subchannel_ids[] = {
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{ .match_flags = 0x1, .type = SUBCHANNEL_TYPE_IO, },
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{ /* end of list */ },
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};
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MODULE_DEVICE_TABLE(css, io_subchannel_ids);
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static struct css_driver io_subchannel_driver = {
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.owner = THIS_MODULE,
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.subchannel_type = SUBCHANNEL_TYPE_IO,
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.subchannel_type = io_subchannel_ids,
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.name = "io_subchannel",
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.irq = io_subchannel_irq,
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.sch_event = io_subchannel_sch_event,
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@ -161,8 +161,8 @@ struct ap_device_id {
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/* s390 css bus devices (subchannels) */
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struct css_device_id {
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__u8 match_flags;
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__u8 type; /* subchannel type */
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__u8 pad1;
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__u16 pad2;
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__u32 pad3;
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kernel_ulong_t driver_data;
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