The FPGA manager class driver data structure is being treated as a
managed resource instead of using standard dev_release call-back
to release the class data structure. This change removes the
managed resource code for the freeing of the class data structure
and combines the create() and register() functions into a single
register() function.
The devm_fpga_mgr_register() function is retained.
Signed-off-by: Russ Weight <russell.h.weight@xxxxxxxxx>
---
v5:
- Rebased on top of recently accepted patches.
- Removed compat_id from the fpga_mgr_register() parameter list
and added it to the fpga_manager_ops structure. This also required
dynamically allocating the dfl-fme-ops structure in order to add
the appropriate compat_id.
v4:
- Added the compat_id parameter to fpga_mgr_register() and
devm_fpga_mgr_register() to ensure that the compat_id is set before
the device_register() call.
v3:
- Cleaned up comment header for fpga_mgr_register()
- Fix error return on ida_simple_get() failure
v2:
- Restored devm_fpga_mgr_register() functionality, adapted for the combined
create/register functionality.
- All previous callers of devm_fpga_mgr_register() will continue to call
devm_fpga_mgr_register().
- replaced unnecessary ternary operators in return statements with standard
if conditions.
---
drivers/fpga/altera-cvp.c | 12 +--
drivers/fpga/altera-pr-ip-core.c | 8 +-
drivers/fpga/altera-ps-spi.c | 10 +-
drivers/fpga/dfl-fme-mgr.c | 52 ++++++----
drivers/fpga/dfl-fme-region.c | 2 +-
drivers/fpga/fpga-mgr.c | 163 ++++++++-----------------------
drivers/fpga/ice40-spi.c | 10 +-
drivers/fpga/machxo2-spi.c | 10 +-
drivers/fpga/socfpga-a10.c | 16 ++-
drivers/fpga/socfpga.c | 10 +-
drivers/fpga/stratix10-soc.c | 16 +--
drivers/fpga/ts73xx-fpga.c | 10 +-
drivers/fpga/xilinx-spi.c | 12 +--
drivers/fpga/zynq-fpga.c | 16 ++-
drivers/fpga/zynqmp-fpga.c | 10 +-
include/linux/fpga/fpga-mgr.h | 43 ++++----
16 files changed, 153 insertions(+), 247 deletions(-)
diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
index ccf4546eff29..4ffb9da537d8 100644
--- a/drivers/fpga/altera-cvp.c
+++ b/drivers/fpga/altera-cvp.c
@@ -652,19 +652,15 @@ static int altera_cvp_probe(struct pci_dev *pdev,
snprintf(conf->mgr_name, sizeof(conf->mgr_name), "%s @%s",
ALTERA_CVP_MGR_NAME, pci_name(pdev));
- mgr = devm_fpga_mgr_create(&pdev->dev, conf->mgr_name,
- &altera_cvp_ops, conf);
- if (!mgr) {
- ret = -ENOMEM;
+ mgr = fpga_mgr_register(&pdev->dev, conf->mgr_name,
+ &altera_cvp_ops, conf);
+ if (IS_ERR(mgr)) {
+ ret = PTR_ERR(mgr);
goto err_unmap;
}
pci_set_drvdata(pdev, mgr);
- ret = fpga_mgr_register(mgr);
- if (ret)
- goto err_unmap;
-
return 0;
err_unmap:
diff --git a/drivers/fpga/altera-pr-ip-core.c b/drivers/fpga/altera-pr-ip-core.c
index dfdf21ed34c4..17babf974852 100644
--- a/drivers/fpga/altera-pr-ip-core.c
+++ b/drivers/fpga/altera-pr-ip-core.c
@@ -191,11 +191,11 @@ int alt_pr_register(struct device *dev, void __iomem *reg_base)
(val & ALT_PR_CSR_STATUS_MSK) >> ALT_PR_CSR_STATUS_SFT,
(int)(val & ALT_PR_CSR_PR_START));
- mgr = devm_fpga_mgr_create(dev, dev_name(dev), &alt_pr_ops, priv);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(dev, dev_name(dev), &alt_pr_ops, priv);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(dev, mgr);
+ return 0;
}
EXPORT_SYMBOL_GPL(alt_pr_register);
diff --git a/drivers/fpga/altera-ps-spi.c b/drivers/fpga/altera-ps-spi.c
index 23bfd4d1ad0f..d3f77b0312b2 100644
--- a/drivers/fpga/altera-ps-spi.c
+++ b/drivers/fpga/altera-ps-spi.c
@@ -302,12 +302,12 @@ static int altera_ps_probe(struct spi_device *spi)
snprintf(conf->mgr_name, sizeof(conf->mgr_name), "%s %s",
dev_driver_string(&spi->dev), dev_name(&spi->dev));
- mgr = devm_fpga_mgr_create(&spi->dev, conf->mgr_name,
- &altera_ps_ops, conf);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(&spi->dev, conf->mgr_name,
+ &altera_ps_ops, conf);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(&spi->dev, mgr);
+ return 0;
}
static const struct spi_device_id altera_ps_spi_ids[] = {
diff --git a/drivers/fpga/dfl-fme-mgr.c b/drivers/fpga/dfl-fme-mgr.c
index d5861d13b306..1b93bc292dbe 100644
--- a/drivers/fpga/dfl-fme-mgr.c
+++ b/drivers/fpga/dfl-fme-mgr.c
@@ -264,14 +264,6 @@ static u64 fme_mgr_status(struct fpga_manager *mgr)
return pr_error_to_mgr_status(priv->pr_error);
}
-static const struct fpga_manager_ops fme_mgr_ops = {
- .write_init = fme_mgr_write_init,
- .write = fme_mgr_write,
- .write_complete = fme_mgr_write_complete,
- .state = fme_mgr_state,
- .status = fme_mgr_status,
-};
-
static void fme_mgr_get_compat_id(void __iomem *fme_pr,
struct fpga_compat_id *id)
{
@@ -279,10 +271,34 @@ static void fme_mgr_get_compat_id(void __iomem *fme_pr,
id->id_h = readq(fme_pr + FME_PR_INTFC_ID_H);
}
+static struct fpga_manager_ops *fme_mgr_get_ops(struct device *dev,
+ struct fme_mgr_priv *priv)
+{
+ struct fpga_manager_ops *ops;
+
+ ops = devm_kzalloc(dev, sizeof(*ops), GFP_KERNEL);
+ if (!ops)
+ return NULL;
+
+ ops->compat_id = devm_kzalloc(dev, sizeof(struct fpga_compat_id),
+ GFP_KERNEL);
+ if (!ops->compat_id)
+ return NULL;
+
+ fme_mgr_get_compat_id(priv->ioaddr, ops->compat_id);
+ ops->write_init = fme_mgr_write_init;
+ ops->write = fme_mgr_write;
+ ops->write_complete = fme_mgr_write_complete;
+ ops->state = fme_mgr_state;
+ ops->status = fme_mgr_status;
+
+ return ops;
+}
+
static int fme_mgr_probe(struct platform_device *pdev)
{
struct dfl_fme_mgr_pdata *pdata = dev_get_platdata(&pdev->dev);
- struct fpga_compat_id *compat_id;
+ struct fpga_manager_ops *fme_mgr_ops;
struct device *dev = &pdev->dev;
struct fme_mgr_priv *priv;
struct fpga_manager *mgr;
@@ -302,20 +318,16 @@ static int fme_mgr_probe(struct platform_device *pdev)
return PTR_ERR(priv->ioaddr);
}
- compat_id = devm_kzalloc(dev, sizeof(*compat_id), GFP_KERNEL);
- if (!compat_id)
- return -ENOMEM;
-
- fme_mgr_get_compat_id(priv->ioaddr, compat_id);
-
- mgr = devm_fpga_mgr_create(dev, "DFL FME FPGA Manager",
- &fme_mgr_ops, priv);
- if (!mgr)
+ fme_mgr_ops = fme_mgr_get_ops(dev, priv);
+ if (!fme_mgr_ops)
return -ENOMEM;
- mgr->compat_id = compat_id;
+ mgr = devm_fpga_mgr_register(dev, "DFL FME FPGA Manager",
+ fme_mgr_ops, priv);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(dev, mgr);
+ return 0;
}
static struct platform_driver fme_mgr_driver = {
diff --git a/drivers/fpga/dfl-fme-region.c b/drivers/fpga/dfl-fme-region.c
index 1eeb42af1012..a64c13e198a0 100644
--- a/drivers/fpga/dfl-fme-region.c
+++ b/drivers/fpga/dfl-fme-region.c
@@ -46,7 +46,7 @@ static int fme_region_probe(struct platform_device *pdev)
}
region->priv = pdata;
- region->compat_id = mgr->compat_id;
+ region->compat_id = mgr->mops->compat_id;
platform_set_drvdata(pdev, region);
ret = fpga_region_register(region);
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index ecb4c3c795fa..9aecfea432c8 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -550,20 +550,20 @@ void fpga_mgr_unlock(struct fpga_manager *mgr)
EXPORT_SYMBOL_GPL(fpga_mgr_unlock);
/**
- * fpga_mgr_create - create and initialize an FPGA manager struct
+ * 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
*
- * The caller of this function is responsible for freeing the struct with
- * fpga_mgr_free(). Using devm_fpga_mgr_create() instead is recommended.
+ * The caller of this function is responsible for calling fpga_mgr_unregister().
+ * Using devm_fpga_mgr_register instead is recommended.
*
- * Return: pointer to struct fpga_manager or NULL
+ * Return: pointer to struct fpga_manager pointer or ERR_PTR()
*/
-struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name,
- const struct fpga_manager_ops *mops,
- void *priv)
+struct fpga_manager *
+fpga_mgr_register(struct device *parent, const char *name,
+ const struct fpga_manager_ops *mops, void *priv)
{
struct fpga_manager *mgr;
int id, ret;
@@ -572,21 +572,23 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name,
!mops->write_init || (!mops->write && !mops->write_sg) ||
(mops->write && mops->write_sg)) {
dev_err(parent, "Attempt to register without fpga_manager_ops\n");
- return NULL;
+ return ERR_PTR(-EINVAL);
}
if (!name || !strlen(name)) {
dev_err(parent, "Attempt to register with no name!\n");
- return NULL;
+ return ERR_PTR(-EINVAL);
}
mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
if (!mgr)
- return NULL;
+ return ERR_PTR(-ENOMEM);
id = ida_simple_get(&fpga_mgr_ida, 0, 0, GFP_KERNEL);
- if (id < 0)
+ if (id < 0) {
+ ret = id;
goto error_kfree;
+ }
mutex_init(&mgr->ref_mutex);
@@ -594,7 +596,6 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name,
mgr->mops = mops;
mgr->priv = priv;
- device_initialize(&mgr->dev);
mgr->dev.class = fpga_mgr_class;
mgr->dev.groups = mops->groups;
mgr->dev.parent = parent;
@@ -605,84 +606,6 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name,
if (ret)
goto error_device;
- return mgr;
-
-error_device:
- ida_simple_remove(&fpga_mgr_ida, id);
-error_kfree:
- kfree(mgr);
-
- return NULL;
-}
-EXPORT_SYMBOL_GPL(fpga_mgr_create);
-
-/**
- * fpga_mgr_free - free an FPGA manager created with fpga_mgr_create()
- * @mgr: fpga manager struct
- */
-void fpga_mgr_free(struct fpga_manager *mgr)
-{
- ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
- kfree(mgr);
-}
-EXPORT_SYMBOL_GPL(fpga_mgr_free);
-
-static void devm_fpga_mgr_release(struct device *dev, void *res)
-{
- struct fpga_mgr_devres *dr = res;
-
- fpga_mgr_free(dr->mgr);
-}
-
-/**
- * devm_fpga_mgr_create - create and initialize a managed FPGA manager struct
- * @parent: fpga manager device from pdev
- * @name: fpga manager name
- * @mops: pointer to structure of fpga manager ops
- * @priv: fpga manager private data
- *
- * This function is intended for use in an FPGA manager driver's probe function.
- * After the manager driver creates the manager struct with
- * devm_fpga_mgr_create(), it should register it with fpga_mgr_register(). The
- * manager driver's remove function should call fpga_mgr_unregister(). The
- * manager struct allocated with this function will be freed automatically on
- * driver detach. This includes the case of a probe function returning error
- * before calling fpga_mgr_register(), the struct will still get cleaned up.
- *
- * Return: pointer to struct fpga_manager or NULL
- */
-struct fpga_manager *devm_fpga_mgr_create(struct device *parent, const char *name,
- const struct fpga_manager_ops *mops,
- void *priv)
-{
- struct fpga_mgr_devres *dr;
-
- dr = devres_alloc(devm_fpga_mgr_release, sizeof(*dr), GFP_KERNEL);
- if (!dr)
- return NULL;
-
- dr->mgr = fpga_mgr_create(parent, name, mops, priv);
- if (!dr->mgr) {
- devres_free(dr);
- return NULL;
- }
-
- devres_add(parent, dr);
-
- return dr->mgr;
-}
-EXPORT_SYMBOL_GPL(devm_fpga_mgr_create);
-
-/**
- * fpga_mgr_register - register an FPGA manager
- * @mgr: fpga manager struct
- *
- * Return: 0 on success, negative error code otherwise.
- */
-int fpga_mgr_register(struct fpga_manager *mgr)
-{
- int ret;
-
/*
* Initialize framework state by requesting low level driver read state
* from device. FPGA may be in reset mode or may have been programmed
@@ -690,18 +613,20 @@ int fpga_mgr_register(struct fpga_manager *mgr)
*/
mgr->state = mgr->mops->state(mgr);
- ret = device_add(&mgr->dev);
- if (ret)
- goto error_device;
-
- dev_info(&mgr->dev, "%s registered\n", mgr->name);
+ ret = device_register(&mgr->dev);
+ if (ret) {
+ put_device(&mgr->dev);
+ return ERR_PTR(ret);
+ }
- return 0;
+ return mgr;
error_device:
- ida_simple_remove(&fpga_mgr_ida, mgr->dev.id);
+ ida_simple_remove(&fpga_mgr_ida, id);
+error_kfree:
+ kfree(mgr);
- return ret;
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(fpga_mgr_register);
@@ -726,14 +651,6 @@ void fpga_mgr_unregister(struct fpga_manager *mgr)
}
EXPORT_SYMBOL_GPL(fpga_mgr_unregister);
-static int fpga_mgr_devres_match(struct device *dev, void *res,
- void *match_data)
-{
- struct fpga_mgr_devres *dr = res;
-
- return match_data == dr->mgr;
-}
-
static void devm_fpga_mgr_unregister(struct device *dev, void *res)
{
struct fpga_mgr_devres *dr = res;
@@ -743,44 +660,44 @@ static void devm_fpga_mgr_unregister(struct device *dev, void *res)
/**
* devm_fpga_mgr_register - resource managed variant of fpga_mgr_register()
- * @dev: managing device for this FPGA manager
- * @mgr: fpga manager struct
+ * @dev: fpga manager device from pdev
+ * @name: fpga manager name
+ * @mops: pointer to structure of fpga manager ops
+ * @priv: fpga manager private data
*
* This is the devres variant of fpga_mgr_register() for which the unregister
* function will be called automatically when the managing device is detached.
*/
-int devm_fpga_mgr_register(struct device *dev, struct fpga_manager *mgr)
+struct fpga_manager *
+devm_fpga_mgr_register(struct device *dev, const char *name,
+ const struct fpga_manager_ops *mops, void *priv)
{
struct fpga_mgr_devres *dr;
- int ret;
-
- /*
- * Make sure that the struct fpga_manager * that is passed in is
- * managed itself.
- */
- if (WARN_ON(!devres_find(dev, devm_fpga_mgr_release,
- fpga_mgr_devres_match, mgr)))
- return -EINVAL;
+ struct fpga_manager *mgr;
dr = devres_alloc(devm_fpga_mgr_unregister, sizeof(*dr), GFP_KERNEL);
if (!dr)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
- ret = fpga_mgr_register(mgr);
- if (ret) {
+ mgr = fpga_mgr_register(dev, name, mops, priv);
+ if (IS_ERR(mgr)) {
devres_free(dr);
- return ret;
+ return mgr;
}
dr->mgr = mgr;
devres_add(dev, dr);
- return 0;
+ return mgr;
}
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)
diff --git a/drivers/fpga/ice40-spi.c b/drivers/fpga/ice40-spi.c
index 69dec5af23c3..91ac25f339f3 100644
--- a/drivers/fpga/ice40-spi.c
+++ b/drivers/fpga/ice40-spi.c
@@ -178,12 +178,12 @@ static int ice40_fpga_probe(struct spi_device *spi)
return ret;
}
- mgr = devm_fpga_mgr_create(dev, "Lattice iCE40 FPGA Manager",
- &ice40_fpga_ops, priv);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(dev, "Lattice iCE40 FPGA Manager",
+ &ice40_fpga_ops, priv);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(dev, mgr);
+ return 0;
}
static const struct of_device_id ice40_fpga_of_match[] = {
diff --git a/drivers/fpga/machxo2-spi.c b/drivers/fpga/machxo2-spi.c
index 114a64d2b7a4..0137c1e2e706 100644
--- a/drivers/fpga/machxo2-spi.c
+++ b/drivers/fpga/machxo2-spi.c
@@ -366,12 +366,12 @@ static int machxo2_spi_probe(struct spi_device *spi)
return -EINVAL;
}
- mgr = devm_fpga_mgr_create(dev, "Lattice MachXO2 SPI FPGA Manager",
- &machxo2_ops, spi);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(dev, "Lattice MachXO2 SPI FPGA Manager",
+ &machxo2_ops, spi);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(dev, mgr);
+ return 0;
}
static const struct of_device_id of_match[] = {
diff --git a/drivers/fpga/socfpga-a10.c b/drivers/fpga/socfpga-a10.c
index 573d88bdf730..ac8e89b8a5cc 100644
--- a/drivers/fpga/socfpga-a10.c
+++ b/drivers/fpga/socfpga-a10.c
@@ -508,19 +508,15 @@ static int socfpga_a10_fpga_probe(struct platform_device *pdev)
return -EBUSY;
}
- mgr = devm_fpga_mgr_create(dev, "SoCFPGA Arria10 FPGA Manager",
- &socfpga_a10_fpga_mgr_ops, priv);
- if (!mgr)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, mgr);
-
- ret = fpga_mgr_register(mgr);
- if (ret) {
+ mgr = fpga_mgr_register(dev, "SoCFPGA Arria10 FPGA Manager",
+ &socfpga_a10_fpga_mgr_ops, priv);
+ if (IS_ERR(mgr)) {
clk_disable_unprepare(priv->clk);
- return ret;
+ return PTR_ERR(mgr);
}
+ platform_set_drvdata(pdev, mgr);
+
return 0;
}
diff --git a/drivers/fpga/socfpga.c b/drivers/fpga/socfpga.c
index 1f467173fc1f..ebfa9f4d24ef 100644
--- a/drivers/fpga/socfpga.c
+++ b/drivers/fpga/socfpga.c
@@ -571,12 +571,12 @@ static int socfpga_fpga_probe(struct platform_device *pdev)
if (ret)
return ret;
- mgr = devm_fpga_mgr_create(dev, "Altera SOCFPGA FPGA Manager",
- &socfpga_fpga_ops, priv);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(dev, "Altera SOCFPGA FPGA Manager",
+ &socfpga_fpga_ops, priv);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(dev, mgr);
+ return 0;
}
#ifdef CONFIG_OF
diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c
index a2cea500f7cc..9155e888a133 100644
--- a/drivers/fpga/stratix10-soc.c
+++ b/drivers/fpga/stratix10-soc.c
@@ -425,18 +425,11 @@ static int s10_probe(struct platform_device *pdev)
init_completion(&priv->status_return_completion);
- mgr = fpga_mgr_create(dev, "Stratix10 SOC FPGA Manager",
- &s10_ops, priv);
- if (!mgr) {
- dev_err(dev, "unable to create FPGA manager\n");
- ret = -ENOMEM;
- goto probe_err;
- }
-
- ret = fpga_mgr_register(mgr);
- if (ret) {
+ mgr = fpga_mgr_register(dev, "Stratix10 SOC FPGA Manager",
+ &s10_ops, priv);
+ if (IS_ERR(mgr)) {
dev_err(dev, "unable to register FPGA manager\n");
- fpga_mgr_free(mgr);
+ ret = PTR_ERR(mgr);
goto probe_err;
}
@@ -454,7 +447,6 @@ static int s10_remove(struct platform_device *pdev)
struct s10_priv *priv = mgr->priv;
fpga_mgr_unregister(mgr);
- fpga_mgr_free(mgr);
stratix10_svc_free_channel(priv->chan);
return 0;
diff --git a/drivers/fpga/ts73xx-fpga.c b/drivers/fpga/ts73xx-fpga.c
index 101f016c6ed8..5efbec2b9f9f 100644
--- a/drivers/fpga/ts73xx-fpga.c
+++ b/drivers/fpga/ts73xx-fpga.c
@@ -122,12 +122,12 @@ static int ts73xx_fpga_probe(struct platform_device *pdev)
if (IS_ERR(priv->io_base))
return PTR_ERR(priv->io_base);
- mgr = devm_fpga_mgr_create(kdev, "TS-73xx FPGA Manager",
- &ts73xx_fpga_ops, priv);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(kdev, "TS-73xx FPGA Manager",
+ &ts73xx_fpga_ops, priv);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(kdev, mgr);
+ return 0;
}
static struct platform_driver ts73xx_fpga_driver = {
diff --git a/drivers/fpga/xilinx-spi.c b/drivers/fpga/xilinx-spi.c
index fee4d0abf6bf..efda475f7a98 100644
--- a/drivers/fpga/xilinx-spi.c
+++ b/drivers/fpga/xilinx-spi.c
@@ -247,13 +247,13 @@ static int xilinx_spi_probe(struct spi_device *spi)
return dev_err_probe(&spi->dev, PTR_ERR(conf->done),
"Failed to get DONE gpio\n");
- mgr = devm_fpga_mgr_create(&spi->dev,
- "Xilinx Slave Serial FPGA Manager",
- &xilinx_spi_ops, conf);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(&spi->dev,
+ "Xilinx Slave Serial FPGA Manager",
+ &xilinx_spi_ops, conf);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(&spi->dev, mgr);
+ return 0;
}
static const struct of_device_id xlnx_spi_of_match[] = {
diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c
index 9b75bd4f93d8..426aa34c6a0d 100644
--- a/drivers/fpga/zynq-fpga.c
+++ b/drivers/fpga/zynq-fpga.c
@@ -609,20 +609,16 @@ static int zynq_fpga_probe(struct platform_device *pdev)
clk_disable(priv->clk);
- mgr = devm_fpga_mgr_create(dev, "Xilinx Zynq FPGA Manager",
- &zynq_fpga_ops, priv);
- if (!mgr)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, mgr);
-
- err = fpga_mgr_register(mgr);
- if (err) {
+ mgr = fpga_mgr_register(dev, "Xilinx Zynq FPGA Manager",
+ &zynq_fpga_ops, priv);
+ if (IS_ERR(mgr)) {
dev_err(dev, "unable to register FPGA manager\n");
clk_unprepare(priv->clk);
- return err;
+ return PTR_ERR(mgr);
}
+ platform_set_drvdata(pdev, mgr);
+
return 0;
}
diff --git a/drivers/fpga/zynqmp-fpga.c b/drivers/fpga/zynqmp-fpga.c
index 125743c9797f..1a6d520985be 100644
--- a/drivers/fpga/zynqmp-fpga.c
+++ b/drivers/fpga/zynqmp-fpga.c
@@ -102,12 +102,12 @@ static int zynqmp_fpga_probe(struct platform_device *pdev)
priv->dev = dev;
- mgr = devm_fpga_mgr_create(dev, "Xilinx ZynqMP FPGA Manager",
- &zynqmp_fpga_ops, priv);
- if (!mgr)
- return -ENOMEM;
+ mgr = devm_fpga_mgr_register(dev, "Xilinx ZynqMP FPGA Manager",
+ &zynqmp_fpga_ops, priv);
+ if (IS_ERR(mgr))
+ return PTR_ERR(mgr);
- return devm_fpga_mgr_register(dev, mgr);
+ return 0;
}
static const struct of_device_id zynqmp_fpga_of_match[] = {
diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
index 474c1f506307..d3c6f0153457 100644
--- a/include/linux/fpga/fpga-mgr.h
+++ b/include/linux/fpga/fpga-mgr.h
@@ -105,6 +105,17 @@ struct fpga_image_info {
#endif
};
+/**
+ * struct fpga_compat_id - id for compatibility check
+ *
+ * @id_h: high 64bit of the compat_id
+ * @id_l: low 64bit of the compat_id
+ */
+struct fpga_compat_id {
+ u64 id_h;
+ u64 id_l;
+};
+
/**
* struct fpga_manager_ops - ops for low level fpga manager drivers
* @initial_header_size: Maximum number of bytes that should be passed into write_init
@@ -116,6 +127,7 @@ struct fpga_image_info {
* @write_complete: set FPGA to operating state after writing is done
* @fpga_remove: optional: Set FPGA into a specific state during driver remove
* @groups: optional attribute groups.
+ * @compat_id: optional: FPGA manager id for compatibility check.
*
* fpga_manager_ops are the low level functions implemented by a specific
* fpga manager driver. The optional ones are tested for NULL before being
@@ -134,6 +146,7 @@ struct fpga_manager_ops {
struct fpga_image_info *info);
void (*fpga_remove)(struct fpga_manager *mgr);
const struct attribute_group **groups;
+ struct fpga_compat_id *compat_id;
};
/* FPGA manager status: Partial/Full Reconfiguration errors */
@@ -143,24 +156,12 @@ struct fpga_manager_ops {
#define FPGA_MGR_STATUS_IP_PROTOCOL_ERR BIT(3)
#define FPGA_MGR_STATUS_FIFO_OVERFLOW_ERR BIT(4)
-/**
- * struct fpga_compat_id - id for compatibility check
- *
- * @id_h: high 64bit of the compat_id
- * @id_l: low 64bit of the compat_id
- */
-struct fpga_compat_id {
- u64 id_h;
- u64 id_l;
-};
-
/**
* struct fpga_manager - fpga manager structure
* @name: name of low level fpga manager
* @dev: fpga manager device
* @ref_mutex: only allows one reference to fpga manager
* @state: state of fpga manager
- * @compat_id: FPGA manager id for compatibility check.
* @mops: pointer to struct of fpga manager ops
* @priv: low level driver private date
*/
@@ -169,7 +170,6 @@ struct fpga_manager {
struct device dev;
struct mutex ref_mutex;
enum fpga_mgr_states state;
- struct fpga_compat_id *compat_id;
const struct fpga_manager_ops *mops;
void *priv;
};
@@ -191,17 +191,14 @@ struct fpga_manager *fpga_mgr_get(struct device *dev);
void fpga_mgr_put(struct fpga_manager *mgr);
-struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
- const struct fpga_manager_ops *mops,
- void *priv);
-void fpga_mgr_free(struct fpga_manager *mgr);
-int fpga_mgr_register(struct fpga_manager *mgr);
+struct fpga_manager *fpga_mgr_register(struct device *dev, const char *name,
+ const struct fpga_manager_ops *mops,
+ void *priv);
void fpga_mgr_unregister(struct fpga_manager *mgr);
-int devm_fpga_mgr_register(struct device *dev, struct fpga_manager *mgr);
-
-struct fpga_manager *devm_fpga_mgr_create(struct device *dev, const char *name,
- const struct fpga_manager_ops *mops,
- void *priv);
+struct fpga_manager *
+devm_fpga_mgr_register(struct device *dev, const char *name,
+ const struct fpga_manager_ops *mops,
+ void *priv);
#endif /*_LINUX_FPGA_MGR_H */
--
2.25.1
