From: Itai Katz <itai.katz@xxxxxxxxxxxxx>
Add function to test for existence of an fsl-mc bus instance
instead of doing this by looking directly at a field in the
bus type struct.
Signed-off-by: Itai Katz <itai.katz@xxxxxxxxxxxxx>
---
drivers/staging/fsl-mc/bus/mc-bus.c | 13 +++++++++++--
drivers/staging/fsl-mc/include/mc.h | 2 ++
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/fsl-mc/bus/mc-bus.c b/drivers/staging/fsl-mc/bus/mc-bus.c
index 92e0702..2aaeb3a 100644
--- a/drivers/staging/fsl-mc/bus/mc-bus.c
+++ b/drivers/staging/fsl-mc/bus/mc-bus.c
@@ -39,7 +39,7 @@ static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
bool major_version_mismatch = false;
bool minor_version_mismatch = false;
- if (WARN_ON(!fsl_mc_bus_type.dev_root))
+ if (WARN_ON(!fsl_mc_bus_exists()))
goto out;
if (!mc_drv->match_id_table)
@@ -206,6 +206,15 @@ void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
}
EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
+/**
+ * fsl_mc_bus_exists - check if a root dprc exists
+ */
+bool fsl_mc_bus_exists(void)
+{
+ return fsl_mc_bus_type.dev_root;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_bus_exists);
+
static int get_dprc_icid(struct fsl_mc_io *mc_io,
int container_id, u16 *icid)
{
@@ -407,7 +416,7 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
mc_io2 = mc_io;
- if (!fsl_mc_bus_type.dev_root)
+ if (!fsl_mc_bus_exists())
fsl_mc_bus_type.dev_root = &mc_dev->dev;
}
diff --git a/drivers/staging/fsl-mc/include/mc.h b/drivers/staging/fsl-mc/include/mc.h
index 860bf26..a933291 100644
--- a/drivers/staging/fsl-mc/include/mc.h
+++ b/drivers/staging/fsl-mc/include/mc.h
@@ -182,6 +182,8 @@ int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,
void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);
+bool fsl_mc_bus_exists(void);
+
int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
u16 mc_io_flags,
struct fsl_mc_io **new_mc_io);
--
1.7.9.5
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