[PATCH v7 6/7] fsi: Use of_match_table for bus matching if specified

Eddie James
2023-03-03T17:05:07Z

Since we have two scom drivers, use the standard of matching if
the driver specifies a table so that the right devices go to the
right driver.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
drivers/fsi/fsi-core.c | 11 +++++++++--
drivers/fsi/fsi-scom.c | 8 ++++++++
2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index b77013b9d8a7..ca4a9634fbc3 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -16,6 +16,7 @@
#include <linux/idr.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/slab.h>
#include <linux/bitops.h>
#include <linux/cdev.h>
@@ -1375,8 +1376,14 @@ static int fsi_bus_match(struct device *dev, struct device_driver *drv)
if (id->engine_type != fsi_dev->engine_type)
continue;
if (id->version == FSI_VERSION_ANY ||
- id->version == fsi_dev->version)
- return 1;
+ id->version == fsi_dev->version) {
+ if (drv->of_match_table) {
+ if (of_driver_match_device(dev, drv))
+ return 1;
+ } else {
+ return 1;
+ }
+ }
}

return 0;
diff --git a/drivers/fsi/fsi-scom.c b/drivers/fsi/fsi-scom.c
index bcb756dc9866..61dbda9dbe2b 100644
--- a/drivers/fsi/fsi-scom.c
+++ b/drivers/fsi/fsi-scom.c
@@ -10,6 +10,7 @@
#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/fs.h>
+#include <linux/mod_devicetable.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
#include <linux/list.h>
@@ -587,6 +588,12 @@ static int scom_remove(struct device *dev)
return 0;
}

+static const struct of_device_id scom_of_ids[] = {
+ { .compatible = "ibm,fsi2pib" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, scom_of_ids);
+
static const struct fsi_device_id scom_ids[] = {
{
.engine_type = FSI_ENGID_SCOM,
@@ -600,6 +607,7 @@ static struct fsi_driver scom_drv = {
.drv = {
.name = "scom",
.bus = &fsi_bus_type,
+ .of_match_table = scom_of_ids,
.probe = scom_probe,
.remove = scom_remove,
}
--
2.31.1