From: Russ Weight <russell.h.weight@intel.com>
To: mdf@kernel.org, linux-fpga@vger.kernel.org
Cc: trix@redhat.com, lgoncalv@redhat.com, yilun.xu@intel.com,
hao.wu@intel.com, matthew.gerlach@intel.com,
richard.gong@intel.com, Russ Weight <russell.h.weight@intel.com>
Subject: [PATCH v1 1/5] fpga: mgr: Use standard dev_release for class driver
Date: Tue, 8 Jun 2021 17:49:21 -0700 [thread overview]
Message-ID: <20210609004925.238044-2-russell.h.weight@intel.com> (raw)
In-Reply-To: <20210609004925.238044-1-russell.h.weight@intel.com>
The FPGA manager class driver data structure is being treated as a
managed resource instead of using the class.dev_release call-back
function to release the class data structure. This change populates
the class.dev_release function, changes the fpga_mgr_free() function
to call put_device() and changes the fpga_mgr_unregister() function
to call device_del() instead of device_unregister().
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
---
drivers/fpga/fpga-mgr.c | 57 +++++++++++++++++++----------------------
1 file changed, 26 insertions(+), 31 deletions(-)
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index b85bc47c91a9..1a4031c0771e 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -551,7 +551,7 @@ EXPORT_SYMBOL_GPL(fpga_mgr_unlock);
/**
* fpga_mgr_create - create and initialize a FPGA manager struct
- * @dev: fpga manager device from pdev
+ * @parent: fpga manager device from pdev
* @name: fpga manager name
* @mops: pointer to structure of fpga manager ops
* @priv: fpga manager private data
@@ -561,7 +561,7 @@ EXPORT_SYMBOL_GPL(fpga_mgr_unlock);
*
* Return: pointer to struct fpga_manager or NULL
*/
-struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
+struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name,
const struct fpga_manager_ops *mops,
void *priv)
{
@@ -571,12 +571,12 @@ struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
if (!mops || !mops->write_complete || !mops->state ||
!mops->write_init || (!mops->write && !mops->write_sg) ||
(mops->write && mops->write_sg)) {
- dev_err(dev, "Attempt to register without fpga_manager_ops\n");
+ dev_err(parent, "Attempt to register without fpga_manager_ops\n");
return NULL;
}
if (!name || !strlen(name)) {
- dev_err(dev, "Attempt to register with no name!\n");
+ dev_err(parent, "Attempt to register with no name!\n");
return NULL;
}
@@ -585,8 +585,10 @@ struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
return NULL;
id = ida_simple_get(&fpga_mgr_ida, 0, 0, GFP_KERNEL);
- if (id < 0)
- goto error_kfree;
+ if (id < 0) {
+ kfree(mgr);
+ return NULL;
+ }
mutex_init(&mgr->ref_mutex);
@@ -597,22 +599,17 @@ struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
device_initialize(&mgr->dev);
mgr->dev.class = fpga_mgr_class;
mgr->dev.groups = mops->groups;
- mgr->dev.parent = dev;
- mgr->dev.of_node = dev->of_node;
+ mgr->dev.parent = parent;
+ mgr->dev.of_node = parent->of_node;
mgr->dev.id = id;
ret = dev_set_name(&mgr->dev, "fpga%d", id);
- if (ret)
- goto error_device;
+ if (ret) {
+ put_device(&mgr->dev);
+ return NULL;
+ }
return mgr;
-
-error_device:
- ida_simple_remove(&fpga_mgr_ida, id);
-error_kfree:
- kfree(mgr);
-
- return NULL;
}
EXPORT_SYMBOL_GPL(fpga_mgr_create);
@@ -622,8 +619,7 @@ EXPORT_SYMBOL_GPL(fpga_mgr_create);
*/
void fpga_mgr_free(struct fpga_manager *mgr)
{
- ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
- kfree(mgr);
+ put_device(&mgr->dev);
}
EXPORT_SYMBOL_GPL(fpga_mgr_free);
@@ -631,12 +627,12 @@ static void devm_fpga_mgr_release(struct device *dev, void *res)
{
struct fpga_mgr_devres *dr = res;
- fpga_mgr_free(dr->mgr);
+ put_device(&dr->mgr->dev);
}
/**
* devm_fpga_mgr_create - create and initialize a managed FPGA manager struct
- * @dev: fpga manager device from pdev
+ * @parent: fpga manager device from pdev
* @name: fpga manager name
* @mops: pointer to structure of fpga manager ops
* @priv: fpga manager private data
@@ -651,7 +647,7 @@ static void devm_fpga_mgr_release(struct device *dev, void *res)
*
* Return: pointer to struct fpga_manager or NULL
*/
-struct fpga_manager *devm_fpga_mgr_create(struct device *dev, const char *name,
+struct fpga_manager *devm_fpga_mgr_create(struct device *parent, const char *name,
const struct fpga_manager_ops *mops,
void *priv)
{
@@ -661,13 +657,13 @@ struct fpga_manager *devm_fpga_mgr_create(struct device *dev, const char *name,
if (!dr)
return NULL;
- dr->mgr = fpga_mgr_create(dev, name, mops, priv);
+ dr->mgr = fpga_mgr_create(parent, name, mops, priv);
if (!dr->mgr) {
devres_free(dr);
return NULL;
}
- devres_add(dev, dr);
+ devres_add(parent, dr);
return dr->mgr;
}
@@ -692,16 +688,11 @@ int fpga_mgr_register(struct fpga_manager *mgr)
ret = device_add(&mgr->dev);
if (ret)
- goto error_device;
+ return ret;
dev_info(&mgr->dev, "%s registered\n", mgr->name);
return 0;
-
-error_device:
- ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
-
- return ret;
}
EXPORT_SYMBOL_GPL(fpga_mgr_register);
@@ -722,7 +713,7 @@ void fpga_mgr_unregister(struct fpga_manager *mgr)
if (mgr->mops->fpga_remove)
mgr->mops->fpga_remove(mgr);
- device_unregister(&mgr->dev);
+ device_del(&mgr->dev);
}
EXPORT_SYMBOL_GPL(fpga_mgr_unregister);
@@ -781,6 +772,10 @@ EXPORT_SYMBOL_GPL(devm_fpga_mgr_register);
static void fpga_mgr_dev_release(struct device *dev)
{
+ struct fpga_manager *mgr = to_fpga_manager(dev);
+
+ ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
+ kfree(mgr);
}
static int __init fpga_mgr_class_init(void)
--
2.25.1
next prev parent reply other threads:[~2021-06-09 0:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 0:49 [PATCH v1 0/5] fpga: Populate dev_release functions Russ Weight
2021-06-09 0:49 ` Russ Weight [this message]
2021-06-09 15:28 ` [PATCH v1 1/5] fpga: mgr: Use standard dev_release for class driver Xu Yilun
2021-06-09 15:57 ` Russ Weight
2021-06-09 0:49 ` [PATCH v1 2/5] fpga: altera-pr-ip: Remove fpga_mgr_unregister() call Russ Weight
2021-06-09 15:37 ` Xu Yilun
2021-06-09 16:25 ` Russ Weight
2021-06-09 16:45 ` Moritz Fischer
2021-06-09 0:49 ` [PATCH v1 3/5] fpga: stratix10-soc: Add missing fpga_mgr_free() call Russ Weight
2021-06-09 15:50 ` Xu Yilun
2021-06-09 0:49 ` [PATCH v1 4/5] fpga: bridge: Use standard dev_release for class driver Russ Weight
2021-06-09 15:58 ` Xu Yilun
2021-06-09 0:49 ` [PATCH v1 5/5] fpga: region: " Russ Weight
2021-06-09 16:01 ` Xu Yilun
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