[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>
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 45ba07c..4e2f2bb 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -850,19 +850,16 @@
return sch == to_css(sch->dev.parent)->pseudo_subchannel;
}
-/*
- * find a driver for a subchannel. They identify by the subchannel
- * type with the exception that the console subchannel driver has its own
- * subchannel type although the device is an i/o subchannel
- */
-static int
-css_bus_match (struct device *dev, struct device_driver *drv)
+static int css_bus_match(struct device *dev, struct device_driver *drv)
{
struct subchannel *sch = to_subchannel(dev);
struct css_driver *driver = to_cssdriver(drv);
+ struct css_device_id *id;
- if (sch->st == driver->subchannel_type)
- return 1;
+ for (id = driver->subchannel_type; id->match_flags; id++) {
+ if (sch->st == id->type)
+ return 1;
+ }
return 0;
}
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 38bf9dd..58020bf 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -75,7 +75,7 @@
*/
struct css_driver {
struct module *owner;
- unsigned int subchannel_type;
+ struct css_device_id *subchannel_type;
struct device_driver drv;
void (*irq)(struct subchannel *);
int (*chp_event)(struct subchannel *, struct chp_link *, int);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 522d47a..c904cb8 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -131,9 +131,15 @@
static int io_subchannel_chp_event(struct subchannel *, struct chp_link *,
int);
+static struct css_device_id io_subchannel_ids[] = {
+ { .match_flags = 0x1, .type = SUBCHANNEL_TYPE_IO, },
+ { /* end of list */ },
+};
+MODULE_DEVICE_TABLE(css, io_subchannel_ids);
+
static struct css_driver io_subchannel_driver = {
.owner = THIS_MODULE,
- .subchannel_type = SUBCHANNEL_TYPE_IO,
+ .subchannel_type = io_subchannel_ids,
.name = "io_subchannel",
.irq = io_subchannel_irq,
.sch_event = io_subchannel_sch_event,
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 1fd03e7..c4db582 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -161,8 +161,8 @@
/* s390 css bus devices (subchannels) */
struct css_device_id {
+ __u8 match_flags;
__u8 type; /* subchannel type */
- __u8 pad1;
__u16 pad2;
__u32 pad3;
kernel_ulong_t driver_data;