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-rw-r--r--drivers/fpga/dfl.c2
-rw-r--r--drivers/fpga/fpga-bridge.c65
-rw-r--r--drivers/fpga/fpga-mgr.c82
-rw-r--r--drivers/fpga/fpga-region.c24
-rw-r--r--drivers/fpga/ice40-spi.c4
5 files changed, 101 insertions, 76 deletions
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index e6d12fbab6..094ee97ea2 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -327,7 +327,7 @@ static struct attribute *dfl_dev_attrs[] = {
};
ATTRIBUTE_GROUPS(dfl_dev);
-static struct bus_type dfl_bus_type = {
+static const struct bus_type dfl_bus_type = {
.name = "dfl",
.match = dfl_bus_match,
.probe = dfl_bus_probe,
diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c
index a024be2b84..8ef395b49b 100644
--- a/drivers/fpga/fpga-bridge.c
+++ b/drivers/fpga/fpga-bridge.c
@@ -30,7 +30,7 @@ int fpga_bridge_enable(struct fpga_bridge *bridge)
{
dev_dbg(&bridge->dev, "enable\n");
- if (bridge->br_ops && bridge->br_ops->enable_set)
+ if (bridge->br_ops->enable_set)
return bridge->br_ops->enable_set(bridge, 1);
return 0;
@@ -48,40 +48,33 @@ int fpga_bridge_disable(struct fpga_bridge *bridge)
{
dev_dbg(&bridge->dev, "disable\n");
- if (bridge->br_ops && bridge->br_ops->enable_set)
+ if (bridge->br_ops->enable_set)
return bridge->br_ops->enable_set(bridge, 0);
return 0;
}
EXPORT_SYMBOL_GPL(fpga_bridge_disable);
-static struct fpga_bridge *__fpga_bridge_get(struct device *dev,
+static struct fpga_bridge *__fpga_bridge_get(struct device *bridge_dev,
struct fpga_image_info *info)
{
struct fpga_bridge *bridge;
- int ret = -ENODEV;
- bridge = to_fpga_bridge(dev);
+ bridge = to_fpga_bridge(bridge_dev);
bridge->info = info;
- if (!mutex_trylock(&bridge->mutex)) {
- ret = -EBUSY;
- goto err_dev;
- }
+ if (!mutex_trylock(&bridge->mutex))
+ return ERR_PTR(-EBUSY);
- if (!try_module_get(dev->parent->driver->owner))
- goto err_ll_mod;
+ if (!try_module_get(bridge->br_ops_owner)) {
+ mutex_unlock(&bridge->mutex);
+ return ERR_PTR(-ENODEV);
+ }
dev_dbg(&bridge->dev, "get\n");
return bridge;
-
-err_ll_mod:
- mutex_unlock(&bridge->mutex);
-err_dev:
- put_device(dev);
- return ERR_PTR(ret);
}
/**
@@ -98,13 +91,18 @@ err_dev:
struct fpga_bridge *of_fpga_bridge_get(struct device_node *np,
struct fpga_image_info *info)
{
- struct device *dev;
+ struct fpga_bridge *bridge;
+ struct device *bridge_dev;
- dev = class_find_device_by_of_node(&fpga_bridge_class, np);
- if (!dev)
+ bridge_dev = class_find_device_by_of_node(&fpga_bridge_class, np);
+ if (!bridge_dev)
return ERR_PTR(-ENODEV);
- return __fpga_bridge_get(dev, info);
+ bridge = __fpga_bridge_get(bridge_dev, info);
+ if (IS_ERR(bridge))
+ put_device(bridge_dev);
+
+ return bridge;
}
EXPORT_SYMBOL_GPL(of_fpga_bridge_get);
@@ -125,6 +123,7 @@ static int fpga_bridge_dev_match(struct device *dev, const void *data)
struct fpga_bridge *fpga_bridge_get(struct device *dev,
struct fpga_image_info *info)
{
+ struct fpga_bridge *bridge;
struct device *bridge_dev;
bridge_dev = class_find_device(&fpga_bridge_class, NULL, dev,
@@ -132,7 +131,11 @@ struct fpga_bridge *fpga_bridge_get(struct device *dev,
if (!bridge_dev)
return ERR_PTR(-ENODEV);
- return __fpga_bridge_get(bridge_dev, info);
+ bridge = __fpga_bridge_get(bridge_dev, info);
+ if (IS_ERR(bridge))
+ put_device(bridge_dev);
+
+ return bridge;
}
EXPORT_SYMBOL_GPL(fpga_bridge_get);
@@ -146,7 +149,7 @@ void fpga_bridge_put(struct fpga_bridge *bridge)
dev_dbg(&bridge->dev, "put\n");
bridge->info = NULL;
- module_put(bridge->dev.parent->driver->owner);
+ module_put(bridge->br_ops_owner);
mutex_unlock(&bridge->mutex);
put_device(&bridge->dev);
}
@@ -296,7 +299,7 @@ static ssize_t state_show(struct device *dev,
struct fpga_bridge *bridge = to_fpga_bridge(dev);
int state = 1;
- if (bridge->br_ops && bridge->br_ops->enable_show) {
+ if (bridge->br_ops->enable_show) {
state = bridge->br_ops->enable_show(bridge);
if (state < 0)
return state;
@@ -316,18 +319,19 @@ static struct attribute *fpga_bridge_attrs[] = {
ATTRIBUTE_GROUPS(fpga_bridge);
/**
- * fpga_bridge_register - create and register an FPGA Bridge device
+ * __fpga_bridge_register - create and register an FPGA Bridge device
* @parent: FPGA bridge device from pdev
* @name: FPGA bridge name
* @br_ops: pointer to structure of fpga bridge ops
* @priv: FPGA bridge private data
+ * @owner: owner module containing the br_ops
*
* Return: struct fpga_bridge pointer or ERR_PTR()
*/
struct fpga_bridge *
-fpga_bridge_register(struct device *parent, const char *name,
- const struct fpga_bridge_ops *br_ops,
- void *priv)
+__fpga_bridge_register(struct device *parent, const char *name,
+ const struct fpga_bridge_ops *br_ops,
+ void *priv, struct module *owner)
{
struct fpga_bridge *bridge;
int id, ret;
@@ -357,6 +361,7 @@ fpga_bridge_register(struct device *parent, const char *name,
bridge->name = name;
bridge->br_ops = br_ops;
+ bridge->br_ops_owner = owner;
bridge->priv = priv;
bridge->dev.groups = br_ops->groups;
@@ -386,7 +391,7 @@ error_kfree:
return ERR_PTR(ret);
}
-EXPORT_SYMBOL_GPL(fpga_bridge_register);
+EXPORT_SYMBOL_GPL(__fpga_bridge_register);
/**
* fpga_bridge_unregister - unregister an FPGA bridge
@@ -401,7 +406,7 @@ void fpga_bridge_unregister(struct fpga_bridge *bridge)
* If the low level driver provides a method for putting bridge into
* a desired state upon unregister, do it.
*/
- if (bridge->br_ops && bridge->br_ops->fpga_bridge_remove)
+ if (bridge->br_ops->fpga_bridge_remove)
bridge->br_ops->fpga_bridge_remove(bridge);
device_unregister(&bridge->dev);
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index 06651389c5..0f4035b089 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -664,20 +664,16 @@ static struct attribute *fpga_mgr_attrs[] = {
};
ATTRIBUTE_GROUPS(fpga_mgr);
-static struct fpga_manager *__fpga_mgr_get(struct device *dev)
+static struct fpga_manager *__fpga_mgr_get(struct device *mgr_dev)
{
struct fpga_manager *mgr;
- mgr = to_fpga_manager(dev);
+ mgr = to_fpga_manager(mgr_dev);
- if (!try_module_get(dev->parent->driver->owner))
- goto err_dev;
+ if (!try_module_get(mgr->mops_owner))
+ mgr = ERR_PTR(-ENODEV);
return mgr;
-
-err_dev:
- put_device(dev);
- return ERR_PTR(-ENODEV);
}
static int fpga_mgr_dev_match(struct device *dev, const void *data)
@@ -693,12 +689,18 @@ static int fpga_mgr_dev_match(struct device *dev, const void *data)
*/
struct fpga_manager *fpga_mgr_get(struct device *dev)
{
- struct device *mgr_dev = class_find_device(&fpga_mgr_class, NULL, dev,
- fpga_mgr_dev_match);
+ struct fpga_manager *mgr;
+ struct device *mgr_dev;
+
+ mgr_dev = class_find_device(&fpga_mgr_class, NULL, dev, fpga_mgr_dev_match);
if (!mgr_dev)
return ERR_PTR(-ENODEV);
- return __fpga_mgr_get(mgr_dev);
+ mgr = __fpga_mgr_get(mgr_dev);
+ if (IS_ERR(mgr))
+ put_device(mgr_dev);
+
+ return mgr;
}
EXPORT_SYMBOL_GPL(fpga_mgr_get);
@@ -711,13 +713,18 @@ EXPORT_SYMBOL_GPL(fpga_mgr_get);
*/
struct fpga_manager *of_fpga_mgr_get(struct device_node *node)
{
- struct device *dev;
+ struct fpga_manager *mgr;
+ struct device *mgr_dev;
- dev = class_find_device_by_of_node(&fpga_mgr_class, node);
- if (!dev)
+ mgr_dev = class_find_device_by_of_node(&fpga_mgr_class, node);
+ if (!mgr_dev)
return ERR_PTR(-ENODEV);
- return __fpga_mgr_get(dev);
+ mgr = __fpga_mgr_get(mgr_dev);
+ if (IS_ERR(mgr))
+ put_device(mgr_dev);
+
+ return mgr;
}
EXPORT_SYMBOL_GPL(of_fpga_mgr_get);
@@ -727,7 +734,7 @@ EXPORT_SYMBOL_GPL(of_fpga_mgr_get);
*/
void fpga_mgr_put(struct fpga_manager *mgr)
{
- module_put(mgr->dev.parent->driver->owner);
+ module_put(mgr->mops_owner);
put_device(&mgr->dev);
}
EXPORT_SYMBOL_GPL(fpga_mgr_put);
@@ -766,9 +773,10 @@ void fpga_mgr_unlock(struct fpga_manager *mgr)
EXPORT_SYMBOL_GPL(fpga_mgr_unlock);
/**
- * fpga_mgr_register_full - create and register an FPGA Manager device
+ * __fpga_mgr_register_full - create and register an FPGA Manager device
* @parent: fpga manager device from pdev
* @info: parameters for fpga manager
+ * @owner: owner module containing the ops
*
* The caller of this function is responsible for calling fpga_mgr_unregister().
* Using devm_fpga_mgr_register_full() instead is recommended.
@@ -776,7 +784,8 @@ EXPORT_SYMBOL_GPL(fpga_mgr_unlock);
* Return: pointer to struct fpga_manager pointer or ERR_PTR()
*/
struct fpga_manager *
-fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info)
+__fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info,
+ struct module *owner)
{
const struct fpga_manager_ops *mops = info->mops;
struct fpga_manager *mgr;
@@ -804,6 +813,8 @@ fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *in
mutex_init(&mgr->ref_mutex);
+ mgr->mops_owner = owner;
+
mgr->name = info->name;
mgr->mops = info->mops;
mgr->priv = info->priv;
@@ -841,14 +852,15 @@ error_kfree:
return ERR_PTR(ret);
}
-EXPORT_SYMBOL_GPL(fpga_mgr_register_full);
+EXPORT_SYMBOL_GPL(__fpga_mgr_register_full);
/**
- * fpga_mgr_register - create and register an FPGA Manager device
+ * __fpga_mgr_register - create and register an FPGA Manager device
* @parent: fpga manager device from pdev
* @name: fpga manager name
* @mops: pointer to structure of fpga manager ops
* @priv: fpga manager private data
+ * @owner: owner module containing the ops
*
* The caller of this function is responsible for calling fpga_mgr_unregister().
* Using devm_fpga_mgr_register() instead is recommended. This simple
@@ -859,8 +871,8 @@ EXPORT_SYMBOL_GPL(fpga_mgr_register_full);
* Return: pointer to struct fpga_manager pointer or ERR_PTR()
*/
struct fpga_manager *
-fpga_mgr_register(struct device *parent, const char *name,
- const struct fpga_manager_ops *mops, void *priv)
+__fpga_mgr_register(struct device *parent, const char *name,
+ const struct fpga_manager_ops *mops, void *priv, struct module *owner)
{
struct fpga_manager_info info = { 0 };
@@ -868,9 +880,9 @@ fpga_mgr_register(struct device *parent, const char *name,
info.mops = mops;
info.priv = priv;
- return fpga_mgr_register_full(parent, &info);
+ return __fpga_mgr_register_full(parent, &info, owner);
}
-EXPORT_SYMBOL_GPL(fpga_mgr_register);
+EXPORT_SYMBOL_GPL(__fpga_mgr_register);
/**
* fpga_mgr_unregister - unregister an FPGA manager
@@ -900,9 +912,10 @@ static void devm_fpga_mgr_unregister(struct device *dev, void *res)
}
/**
- * devm_fpga_mgr_register_full - resource managed variant of fpga_mgr_register()
+ * __devm_fpga_mgr_register_full - resource managed variant of fpga_mgr_register()
* @parent: fpga manager device from pdev
* @info: parameters for fpga manager
+ * @owner: owner module containing the ops
*
* Return: fpga manager pointer on success, negative error code otherwise.
*
@@ -910,7 +923,8 @@ static void devm_fpga_mgr_unregister(struct device *dev, void *res)
* function will be called automatically when the managing device is detached.
*/
struct fpga_manager *
-devm_fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info)
+__devm_fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info,
+ struct module *owner)
{
struct fpga_mgr_devres *dr;
struct fpga_manager *mgr;
@@ -919,7 +933,7 @@ devm_fpga_mgr_register_full(struct device *parent, const struct fpga_manager_inf
if (!dr)
return ERR_PTR(-ENOMEM);
- mgr = fpga_mgr_register_full(parent, info);
+ mgr = __fpga_mgr_register_full(parent, info, owner);
if (IS_ERR(mgr)) {
devres_free(dr);
return mgr;
@@ -930,14 +944,15 @@ devm_fpga_mgr_register_full(struct device *parent, const struct fpga_manager_inf
return mgr;
}
-EXPORT_SYMBOL_GPL(devm_fpga_mgr_register_full);
+EXPORT_SYMBOL_GPL(__devm_fpga_mgr_register_full);
/**
- * devm_fpga_mgr_register - resource managed variant of fpga_mgr_register()
+ * __devm_fpga_mgr_register - resource managed variant of fpga_mgr_register()
* @parent: fpga manager device from pdev
* @name: fpga manager name
* @mops: pointer to structure of fpga manager ops
* @priv: fpga manager private data
+ * @owner: owner module containing the ops
*
* Return: fpga manager pointer on success, negative error code otherwise.
*
@@ -946,8 +961,9 @@ EXPORT_SYMBOL_GPL(devm_fpga_mgr_register_full);
* device is detached.
*/
struct fpga_manager *
-devm_fpga_mgr_register(struct device *parent, const char *name,
- const struct fpga_manager_ops *mops, void *priv)
+__devm_fpga_mgr_register(struct device *parent, const char *name,
+ const struct fpga_manager_ops *mops, void *priv,
+ struct module *owner)
{
struct fpga_manager_info info = { 0 };
@@ -955,9 +971,9 @@ devm_fpga_mgr_register(struct device *parent, const char *name,
info.mops = mops;
info.priv = priv;
- return devm_fpga_mgr_register_full(parent, &info);
+ return __devm_fpga_mgr_register_full(parent, &info, owner);
}
-EXPORT_SYMBOL_GPL(devm_fpga_mgr_register);
+EXPORT_SYMBOL_GPL(__devm_fpga_mgr_register);
static void fpga_mgr_dev_release(struct device *dev)
{
diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c
index b364a92942..753cd14250 100644
--- a/drivers/fpga/fpga-region.c
+++ b/drivers/fpga/fpga-region.c
@@ -53,7 +53,7 @@ static struct fpga_region *fpga_region_get(struct fpga_region *region)
}
get_device(dev);
- if (!try_module_get(dev->parent->driver->owner)) {
+ if (!try_module_get(region->ops_owner)) {
put_device(dev);
mutex_unlock(&region->mutex);
return ERR_PTR(-ENODEV);
@@ -75,7 +75,7 @@ static void fpga_region_put(struct fpga_region *region)
dev_dbg(dev, "put\n");
- module_put(dev->parent->driver->owner);
+ module_put(region->ops_owner);
put_device(dev);
mutex_unlock(&region->mutex);
}
@@ -181,14 +181,16 @@ static struct attribute *fpga_region_attrs[] = {
ATTRIBUTE_GROUPS(fpga_region);
/**
- * fpga_region_register_full - create and register an FPGA Region device
+ * __fpga_region_register_full - create and register an FPGA Region device
* @parent: device parent
* @info: parameters for FPGA Region
+ * @owner: module containing the get_bridges function
*
* Return: struct fpga_region or ERR_PTR()
*/
struct fpga_region *
-fpga_region_register_full(struct device *parent, const struct fpga_region_info *info)
+__fpga_region_register_full(struct device *parent, const struct fpga_region_info *info,
+ struct module *owner)
{
struct fpga_region *region;
int id, ret = 0;
@@ -213,6 +215,7 @@ fpga_region_register_full(struct device *parent, const struct fpga_region_info *
region->compat_id = info->compat_id;
region->priv = info->priv;
region->get_bridges = info->get_bridges;
+ region->ops_owner = owner;
mutex_init(&region->mutex);
INIT_LIST_HEAD(&region->bridge_list);
@@ -241,13 +244,14 @@ err_free:
return ERR_PTR(ret);
}
-EXPORT_SYMBOL_GPL(fpga_region_register_full);
+EXPORT_SYMBOL_GPL(__fpga_region_register_full);
/**
- * fpga_region_register - create and register an FPGA Region device
+ * __fpga_region_register - create and register an FPGA Region device
* @parent: device parent
* @mgr: manager that programs this region
* @get_bridges: optional function to get bridges to a list
+ * @owner: module containing the get_bridges function
*
* This simple version of the register function should be sufficient for most users.
* The fpga_region_register_full() function is available for users that need to
@@ -256,17 +260,17 @@ EXPORT_SYMBOL_GPL(fpga_region_register_full);
* Return: struct fpga_region or ERR_PTR()
*/
struct fpga_region *
-fpga_region_register(struct device *parent, struct fpga_manager *mgr,
- int (*get_bridges)(struct fpga_region *))
+__fpga_region_register(struct device *parent, struct fpga_manager *mgr,
+ int (*get_bridges)(struct fpga_region *), struct module *owner)
{
struct fpga_region_info info = { 0 };
info.mgr = mgr;
info.get_bridges = get_bridges;
- return fpga_region_register_full(parent, &info);
+ return __fpga_region_register_full(parent, &info, owner);
}
-EXPORT_SYMBOL_GPL(fpga_region_register);
+EXPORT_SYMBOL_GPL(__fpga_region_register);
/**
* fpga_region_unregister - unregister an FPGA region
diff --git a/drivers/fpga/ice40-spi.c b/drivers/fpga/ice40-spi.c
index 7cbb3558b8..c0028ae4c5 100644
--- a/drivers/fpga/ice40-spi.c
+++ b/drivers/fpga/ice40-spi.c
@@ -66,7 +66,7 @@ static int ice40_fpga_ops_write_init(struct fpga_manager *mgr,
}
/* Lock the bus, assert CRESET_B and SS_B and delay >200ns */
- spi_bus_lock(dev->master);
+ spi_bus_lock(dev->controller);
gpiod_set_value(priv->reset, 1);
@@ -94,7 +94,7 @@ static int ice40_fpga_ops_write_init(struct fpga_manager *mgr,
ret = spi_sync_locked(dev, &message);
fail:
- spi_bus_unlock(dev->master);
+ spi_bus_unlock(dev->controller);
return ret;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 19:33:36 +0000