Delay calling platform_device_alloc() from build_info_create_dev() to
feature_dev_register(), now that the feature device data contains all
necessary data to create the feature device. This completes the new
function feature_dev_register(), which will be reused in a subsequent
commit to fully recreate the feature device when assigning a port.
Signed-off-by: Peter Colberg <peter.colberg@intel.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Reviewed-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@linux.intel.com>
---
Changes since v3:
- New patch extracted from last patch of v3 series.
---
drivers/fpga/dfl.c | 59 +++++++++++++++++-----------------------------
1 file changed, 22 insertions(+), 37 deletions(-)
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index a9ec37278b2d..d9cef150ed0d 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -681,7 +681,6 @@ EXPORT_SYMBOL_GPL(dfl_fpga_dev_ops_unregister);
* @nr_irqs: number of irqs for all feature devices.
* @irq_table: Linux IRQ numbers for all irqs, indexed by local irq index of
* this device.
- * @feature_dev: current feature device.
* @type: the current FIU type.
* @ioaddr: header register region address of current FIU in enumeration.
* @start: register resource start of current FIU.
@@ -695,7 +694,6 @@ struct build_feature_devs_info {
unsigned int nr_irqs;
int *irq_table;
- struct platform_device *feature_dev;
enum dfl_id_type type;
void __iomem *ioaddr;
resource_size_t start;
@@ -750,7 +748,6 @@ static void dfl_id_free_action(void *arg)
static struct dfl_feature_dev_data *
binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
{
- struct platform_device *fdev = binfo->feature_dev;
enum dfl_id_type type = binfo->type;
struct dfl_feature_info *finfo, *p;
struct dfl_feature_dev_data *fdata;
@@ -773,7 +770,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
if (!fdata->resources)
return ERR_PTR(-ENOMEM);
- fdata->dev = fdev;
fdata->type = type;
fdata->pdev_id = dfl_id_alloc(type, binfo->dev);
@@ -784,8 +780,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
if (ret)
return ERR_PTR(ret);
- fdev->id = fdata->pdev_id;
-
fdata->pdev_name = dfl_devs[type].name;
fdata->num = binfo->feature_num;
fdata->dfl_cdev = binfo->cdev;
@@ -809,7 +803,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
unsigned int i;
/* save resource information for each feature */
- feature->dev = fdev;
feature->id = finfo->fid;
feature->revision = finfo->revision;
feature->dfh_version = finfo->dfh_version;
@@ -868,18 +861,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
static int
build_info_create_dev(struct build_feature_devs_info *binfo)
{
- enum dfl_id_type type = binfo->type;
- struct platform_device *fdev;
-
- /*
- * we use -ENODEV as the initialization indicator which indicates
- * whether the id need to be reclaimed
- */
- fdev = platform_device_alloc(dfl_devs[type].name, -ENODEV);
- if (!fdev)
- return -ENOMEM;
-
- binfo->feature_dev = fdev;
binfo->feature_num = 0;
INIT_LIST_HEAD(&binfo->sub_features);
@@ -895,27 +876,43 @@ build_info_create_dev(struct build_feature_devs_info *binfo)
static int feature_dev_register(struct dfl_feature_dev_data *fdata)
{
struct dfl_feature_platform_data pdata = {};
- struct platform_device *fdev = fdata->dev;
+ struct platform_device *fdev;
+ struct dfl_feature *feature;
int ret;
+ fdev = platform_device_alloc(fdata->pdev_name, fdata->pdev_id);
+ if (!fdev)
+ return -ENOMEM;
+
+ fdata->dev = fdev;
+
fdev->dev.parent = &fdata->dfl_cdev->region->dev;
fdev->dev.devt = dfl_get_devt(dfl_devs[fdata->type].devt_type, fdev->id);
+ dfl_fpga_dev_for_each_feature(fdata, feature)
+ feature->dev = fdev;
+
ret = platform_device_add_resources(fdev, fdata->resources,
fdata->resource_num);
if (ret)
- return ret;
+ goto err_put_dev;
pdata.fdata = fdata;
ret = platform_device_add_data(fdev, &pdata, sizeof(pdata));
if (ret)
- return ret;
+ goto err_put_dev;
ret = platform_device_add(fdev);
if (ret)
- return ret;
+ goto err_put_dev;
return 0;
+
+err_put_dev:
+ platform_device_put(fdev);
+ fdata->dev = NULL;
+
+ return ret;
}
static void feature_dev_unregister(struct dfl_feature_dev_data *fdata)
@@ -940,16 +937,7 @@ static int build_info_commit_dev(struct build_feature_devs_info *binfo)
if (binfo->type == PORT_ID)
dfl_fpga_cdev_add_port_data(binfo->cdev, fdata);
else
- binfo->cdev->fme_dev = get_device(&binfo->feature_dev->dev);
-
- /*
- * reset it to avoid build_info_free() freeing their resource.
- *
- * The resource of successfully registered feature devices
- * will be freed by platform_device_unregister(). See the
- * comments in build_info_create_dev().
- */
- binfo->feature_dev = NULL;
+ binfo->cdev->fme_dev = get_device(&fdata->dev->dev);
/* reset the binfo for next FIU */
binfo->type = DFL_ID_MAX;
@@ -966,8 +954,6 @@ static void build_info_free(struct build_feature_devs_info *binfo)
kfree(finfo);
}
- platform_device_put(binfo->feature_dev);
-
devm_kfree(binfo->dev, binfo);
}
@@ -1262,8 +1248,7 @@ static int parse_feature_afu(struct build_feature_devs_info *binfo,
case PORT_ID:
return parse_feature_port_afu(binfo, ofst);
default:
- dev_info(binfo->dev, "AFU belonging to FIU %s is not supported yet.\n",
- binfo->feature_dev->name);
+ dev_info(binfo->dev, "AFU belonging to FIU is not supported yet.\n");
}
return 0;
--
2.47.0On Fri, Oct 25, 2024 at 06:37:11PM -0400, Peter Colberg wrote:
> Delay calling platform_device_alloc() from build_info_create_dev() to
> feature_dev_register(), now that the feature device data contains all
> necessary data to create the feature device. This completes the new
> function feature_dev_register(), which will be reused in a subsequent
> commit to fully recreate the feature device when assigning a port.
>
> Signed-off-by: Peter Colberg <peter.colberg@intel.com>
> Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> Reviewed-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@linux.intel.com>
> ---
> Changes since v3:
> - New patch extracted from last patch of v3 series.
> ---
> drivers/fpga/dfl.c | 59 +++++++++++++++++-----------------------------
> 1 file changed, 22 insertions(+), 37 deletions(-)
>
> diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
> index a9ec37278b2d..d9cef150ed0d 100644
> --- a/drivers/fpga/dfl.c
> +++ b/drivers/fpga/dfl.c
> @@ -681,7 +681,6 @@ EXPORT_SYMBOL_GPL(dfl_fpga_dev_ops_unregister);
> * @nr_irqs: number of irqs for all feature devices.
> * @irq_table: Linux IRQ numbers for all irqs, indexed by local irq index of
> * this device.
> - * @feature_dev: current feature device.
> * @type: the current FIU type.
> * @ioaddr: header register region address of current FIU in enumeration.
> * @start: register resource start of current FIU.
> @@ -695,7 +694,6 @@ struct build_feature_devs_info {
> unsigned int nr_irqs;
> int *irq_table;
>
> - struct platform_device *feature_dev;
> enum dfl_id_type type;
> void __iomem *ioaddr;
> resource_size_t start;
> @@ -750,7 +748,6 @@ static void dfl_id_free_action(void *arg)
> static struct dfl_feature_dev_data *
> binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> {
> - struct platform_device *fdev = binfo->feature_dev;
> enum dfl_id_type type = binfo->type;
> struct dfl_feature_info *finfo, *p;
> struct dfl_feature_dev_data *fdata;
> @@ -773,7 +770,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> if (!fdata->resources)
> return ERR_PTR(-ENOMEM);
>
> - fdata->dev = fdev;
> fdata->type = type;
>
> fdata->pdev_id = dfl_id_alloc(type, binfo->dev);
> @@ -784,8 +780,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> if (ret)
> return ERR_PTR(ret);
>
> - fdev->id = fdata->pdev_id;
> -
> fdata->pdev_name = dfl_devs[type].name;
> fdata->num = binfo->feature_num;
> fdata->dfl_cdev = binfo->cdev;
> @@ -809,7 +803,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> unsigned int i;
>
> /* save resource information for each feature */
> - feature->dev = fdev;
> feature->id = finfo->fid;
> feature->revision = finfo->revision;
> feature->dfh_version = finfo->dfh_version;
> @@ -868,18 +861,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> static int
> build_info_create_dev(struct build_feature_devs_info *binfo)
> {
> - enum dfl_id_type type = binfo->type;
> - struct platform_device *fdev;
> -
> - /*
> - * we use -ENODEV as the initialization indicator which indicates
> - * whether the id need to be reclaimed
> - */
> - fdev = platform_device_alloc(dfl_devs[type].name, -ENODEV);
> - if (!fdev)
> - return -ENOMEM;
> -
> - binfo->feature_dev = fdev;
> binfo->feature_num = 0;
>
> INIT_LIST_HEAD(&binfo->sub_features);
> @@ -895,27 +876,43 @@ build_info_create_dev(struct build_feature_devs_info *binfo)
> static int feature_dev_register(struct dfl_feature_dev_data *fdata)
> {
> struct dfl_feature_platform_data pdata = {};
> - struct platform_device *fdev = fdata->dev;
> + struct platform_device *fdev;
> + struct dfl_feature *feature;
> int ret;
>
> + fdev = platform_device_alloc(fdata->pdev_name, fdata->pdev_id);
> + if (!fdev)
> + return -ENOMEM;
> +
> + fdata->dev = fdev;
> +
> fdev->dev.parent = &fdata->dfl_cdev->region->dev;
> fdev->dev.devt = dfl_get_devt(dfl_devs[fdata->type].devt_type, fdev->id);
>
> + dfl_fpga_dev_for_each_feature(fdata, feature)
> + feature->dev = fdev;
> +
> ret = platform_device_add_resources(fdev, fdata->resources,
> fdata->resource_num);
> if (ret)
> - return ret;
> + goto err_put_dev;
>
> pdata.fdata = fdata;
> ret = platform_device_add_data(fdev, &pdata, sizeof(pdata));
> if (ret)
> - return ret;
> + goto err_put_dev;
>
> ret = platform_device_add(fdev);
> if (ret)
> - return ret;
> + goto err_put_dev;
>
> return 0;
> +
> +err_put_dev:
> + platform_device_put(fdev);
> + fdata->dev = NULL;
Do we also need to clean up all the feature->dev?
Thanks,
Yilun
> +
> + return ret;
> }
>
> static void feature_dev_unregister(struct dfl_feature_dev_data *fdata)
> @@ -940,16 +937,7 @@ static int build_info_commit_dev(struct build_feature_devs_info *binfo)
> if (binfo->type == PORT_ID)
> dfl_fpga_cdev_add_port_data(binfo->cdev, fdata);
> else
> - binfo->cdev->fme_dev = get_device(&binfo->feature_dev->dev);
> -
> - /*
> - * reset it to avoid build_info_free() freeing their resource.
> - *
> - * The resource of successfully registered feature devices
> - * will be freed by platform_device_unregister(). See the
> - * comments in build_info_create_dev().
> - */
> - binfo->feature_dev = NULL;
> + binfo->cdev->fme_dev = get_device(&fdata->dev->dev);
>
> /* reset the binfo for next FIU */
> binfo->type = DFL_ID_MAX;
> @@ -966,8 +954,6 @@ static void build_info_free(struct build_feature_devs_info *binfo)
> kfree(finfo);
> }
>
> - platform_device_put(binfo->feature_dev);
> -
> devm_kfree(binfo->dev, binfo);
> }
>
> @@ -1262,8 +1248,7 @@ static int parse_feature_afu(struct build_feature_devs_info *binfo,
> case PORT_ID:
> return parse_feature_port_afu(binfo, ofst);
> default:
> - dev_info(binfo->dev, "AFU belonging to FIU %s is not supported yet.\n",
> - binfo->feature_dev->name);
> + dev_info(binfo->dev, "AFU belonging to FIU is not supported yet.\n");
> }
>
> return 0;
> --
> 2.47.0
>
>
On Mon, 2024-11-18 at 22:51 +0800, Xu Yilun wrote:
> On Fri, Oct 25, 2024 at 06:37:11PM -0400, Peter Colberg wrote:
> > Delay calling platform_device_alloc() from build_info_create_dev() to
> > feature_dev_register(), now that the feature device data contains all
> > necessary data to create the feature device. This completes the new
> > function feature_dev_register(), which will be reused in a subsequent
> > commit to fully recreate the feature device when assigning a port.
> >
> > Signed-off-by: Peter Colberg <peter.colberg@intel.com>
> > Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> > Reviewed-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@linux.intel.com>
> > ---
> > Changes since v3:
> > - New patch extracted from last patch of v3 series.
> > ---
> > drivers/fpga/dfl.c | 59 +++++++++++++++++-----------------------------
> > 1 file changed, 22 insertions(+), 37 deletions(-)
> >
> > diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
> > index a9ec37278b2d..d9cef150ed0d 100644
> > --- a/drivers/fpga/dfl.c
> > +++ b/drivers/fpga/dfl.c
> > @@ -681,7 +681,6 @@ EXPORT_SYMBOL_GPL(dfl_fpga_dev_ops_unregister);
> > * @nr_irqs: number of irqs for all feature devices.
> > * @irq_table: Linux IRQ numbers for all irqs, indexed by local irq index of
> > * this device.
> > - * @feature_dev: current feature device.
> > * @type: the current FIU type.
> > * @ioaddr: header register region address of current FIU in enumeration.
> > * @start: register resource start of current FIU.
> > @@ -695,7 +694,6 @@ struct build_feature_devs_info {
> > unsigned int nr_irqs;
> > int *irq_table;
> >
> > - struct platform_device *feature_dev;
> > enum dfl_id_type type;
> > void __iomem *ioaddr;
> > resource_size_t start;
> > @@ -750,7 +748,6 @@ static void dfl_id_free_action(void *arg)
> > static struct dfl_feature_dev_data *
> > binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > {
> > - struct platform_device *fdev = binfo->feature_dev;
> > enum dfl_id_type type = binfo->type;
> > struct dfl_feature_info *finfo, *p;
> > struct dfl_feature_dev_data *fdata;
> > @@ -773,7 +770,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > if (!fdata->resources)
> > return ERR_PTR(-ENOMEM);
> >
> > - fdata->dev = fdev;
> > fdata->type = type;
> >
> > fdata->pdev_id = dfl_id_alloc(type, binfo->dev);
> > @@ -784,8 +780,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > if (ret)
> > return ERR_PTR(ret);
> >
> > - fdev->id = fdata->pdev_id;
> > -
> > fdata->pdev_name = dfl_devs[type].name;
> > fdata->num = binfo->feature_num;
> > fdata->dfl_cdev = binfo->cdev;
> > @@ -809,7 +803,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > unsigned int i;
> >
> > /* save resource information for each feature */
> > - feature->dev = fdev;
> > feature->id = finfo->fid;
> > feature->revision = finfo->revision;
> > feature->dfh_version = finfo->dfh_version;
> > @@ -868,18 +861,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > static int
> > build_info_create_dev(struct build_feature_devs_info *binfo)
> > {
> > - enum dfl_id_type type = binfo->type;
> > - struct platform_device *fdev;
> > -
> > - /*
> > - * we use -ENODEV as the initialization indicator which indicates
> > - * whether the id need to be reclaimed
> > - */
> > - fdev = platform_device_alloc(dfl_devs[type].name, -ENODEV);
> > - if (!fdev)
> > - return -ENOMEM;
> > -
> > - binfo->feature_dev = fdev;
> > binfo->feature_num = 0;
> >
> > INIT_LIST_HEAD(&binfo->sub_features);
> > @@ -895,27 +876,43 @@ build_info_create_dev(struct build_feature_devs_info *binfo)
> > static int feature_dev_register(struct dfl_feature_dev_data *fdata)
> > {
> > struct dfl_feature_platform_data pdata = {};
> > - struct platform_device *fdev = fdata->dev;
> > + struct platform_device *fdev;
> > + struct dfl_feature *feature;
> > int ret;
> >
> > + fdev = platform_device_alloc(fdata->pdev_name, fdata->pdev_id);
> > + if (!fdev)
> > + return -ENOMEM;
> > +
> > + fdata->dev = fdev;
> > +
> > fdev->dev.parent = &fdata->dfl_cdev->region->dev;
> > fdev->dev.devt = dfl_get_devt(dfl_devs[fdata->type].devt_type, fdev->id);
> >
> > + dfl_fpga_dev_for_each_feature(fdata, feature)
> > + feature->dev = fdev;
> > +
> > ret = platform_device_add_resources(fdev, fdata->resources,
> > fdata->resource_num);
> > if (ret)
> > - return ret;
> > + goto err_put_dev;
> >
> > pdata.fdata = fdata;
> > ret = platform_device_add_data(fdev, &pdata, sizeof(pdata));
> > if (ret)
> > - return ret;
> > + goto err_put_dev;
> >
> > ret = platform_device_add(fdev);
> > if (ret)
> > - return ret;
> > + goto err_put_dev;
> >
> > return 0;
> > +
> > +err_put_dev:
> > + platform_device_put(fdev);
> > + fdata->dev = NULL;
>
> Do we also need to clean up all the feature->dev?
Yes, thank you for the suggestion. It is not needed for functional
correctness since feature->dev is exclusively used when non-NULL, but
it seems a good idea for consistency.
Thanks,
Peter
>
> Thanks,
> Yilun
>
> > +
> > + return ret;
> > }
> >
> > static void feature_dev_unregister(struct dfl_feature_dev_data *fdata)
> > @@ -940,16 +937,7 @@ static int build_info_commit_dev(struct build_feature_devs_info *binfo)
> > if (binfo->type == PORT_ID)
> > dfl_fpga_cdev_add_port_data(binfo->cdev, fdata);
> > else
> > - binfo->cdev->fme_dev = get_device(&binfo->feature_dev->dev);
> > -
> > - /*
> > - * reset it to avoid build_info_free() freeing their resource.
> > - *
> > - * The resource of successfully registered feature devices
> > - * will be freed by platform_device_unregister(). See the
> > - * comments in build_info_create_dev().
> > - */
> > - binfo->feature_dev = NULL;
> > + binfo->cdev->fme_dev = get_device(&fdata->dev->dev);
> >
> > /* reset the binfo for next FIU */
> > binfo->type = DFL_ID_MAX;
> > @@ -966,8 +954,6 @@ static void build_info_free(struct build_feature_devs_info *binfo)
> > kfree(finfo);
> > }
> >
> > - platform_device_put(binfo->feature_dev);
> > -
> > devm_kfree(binfo->dev, binfo);
> > }
> >
> > @@ -1262,8 +1248,7 @@ static int parse_feature_afu(struct build_feature_devs_info *binfo,
> > case PORT_ID:
> > return parse_feature_port_afu(binfo, ofst);
> > default:
> > - dev_info(binfo->dev, "AFU belonging to FIU %s is not supported yet.\n",
> > - binfo->feature_dev->name);
> > + dev_info(binfo->dev, "AFU belonging to FIU is not supported yet.\n");
> > }
> >
> > return 0;
> > --
> > 2.47.0
> >
> >
On Mon, 2024-11-18 at 23:04 +0000, Colberg, Peter wrote:
> On Mon, 2024-11-18 at 22:51 +0800, Xu Yilun wrote:
> > On Fri, Oct 25, 2024 at 06:37:11PM -0400, Peter Colberg wrote:
> > > Delay calling platform_device_alloc() from build_info_create_dev() to
> > > feature_dev_register(), now that the feature device data contains all
> > > necessary data to create the feature device. This completes the new
> > > function feature_dev_register(), which will be reused in a subsequent
> > > commit to fully recreate the feature device when assigning a port.
> > >
> > > Signed-off-by: Peter Colberg <peter.colberg@intel.com>
> > > Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> > > Reviewed-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@linux.intel.com>
> > > ---
> > > Changes since v3:
> > > - New patch extracted from last patch of v3 series.
> > > ---
> > > drivers/fpga/dfl.c | 59 +++++++++++++++++-----------------------------
> > > 1 file changed, 22 insertions(+), 37 deletions(-)
> > >
> > > diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
> > > index a9ec37278b2d..d9cef150ed0d 100644
> > > --- a/drivers/fpga/dfl.c
> > > +++ b/drivers/fpga/dfl.c
> > > @@ -681,7 +681,6 @@ EXPORT_SYMBOL_GPL(dfl_fpga_dev_ops_unregister);
> > > * @nr_irqs: number of irqs for all feature devices.
> > > * @irq_table: Linux IRQ numbers for all irqs, indexed by local irq index of
> > > * this device.
> > > - * @feature_dev: current feature device.
> > > * @type: the current FIU type.
> > > * @ioaddr: header register region address of current FIU in enumeration.
> > > * @start: register resource start of current FIU.
> > > @@ -695,7 +694,6 @@ struct build_feature_devs_info {
> > > unsigned int nr_irqs;
> > > int *irq_table;
> > >
> > > - struct platform_device *feature_dev;
> > > enum dfl_id_type type;
> > > void __iomem *ioaddr;
> > > resource_size_t start;
> > > @@ -750,7 +748,6 @@ static void dfl_id_free_action(void *arg)
> > > static struct dfl_feature_dev_data *
> > > binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > > {
> > > - struct platform_device *fdev = binfo->feature_dev;
> > > enum dfl_id_type type = binfo->type;
> > > struct dfl_feature_info *finfo, *p;
> > > struct dfl_feature_dev_data *fdata;
> > > @@ -773,7 +770,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > > if (!fdata->resources)
> > > return ERR_PTR(-ENOMEM);
> > >
> > > - fdata->dev = fdev;
> > > fdata->type = type;
> > >
> > > fdata->pdev_id = dfl_id_alloc(type, binfo->dev);
> > > @@ -784,8 +780,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > > if (ret)
> > > return ERR_PTR(ret);
> > >
> > > - fdev->id = fdata->pdev_id;
> > > -
> > > fdata->pdev_name = dfl_devs[type].name;
> > > fdata->num = binfo->feature_num;
> > > fdata->dfl_cdev = binfo->cdev;
> > > @@ -809,7 +803,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > > unsigned int i;
> > >
> > > /* save resource information for each feature */
> > > - feature->dev = fdev;
> > > feature->id = finfo->fid;
> > > feature->revision = finfo->revision;
> > > feature->dfh_version = finfo->dfh_version;
> > > @@ -868,18 +861,6 @@ binfo_create_feature_dev_data(struct build_feature_devs_info *binfo)
> > > static int
> > > build_info_create_dev(struct build_feature_devs_info *binfo)
> > > {
> > > - enum dfl_id_type type = binfo->type;
> > > - struct platform_device *fdev;
> > > -
> > > - /*
> > > - * we use -ENODEV as the initialization indicator which indicates
> > > - * whether the id need to be reclaimed
> > > - */
> > > - fdev = platform_device_alloc(dfl_devs[type].name, -ENODEV);
> > > - if (!fdev)
> > > - return -ENOMEM;
> > > -
> > > - binfo->feature_dev = fdev;
> > > binfo->feature_num = 0;
> > >
> > > INIT_LIST_HEAD(&binfo->sub_features);
> > > @@ -895,27 +876,43 @@ build_info_create_dev(struct build_feature_devs_info *binfo)
> > > static int feature_dev_register(struct dfl_feature_dev_data *fdata)
> > > {
> > > struct dfl_feature_platform_data pdata = {};
> > > - struct platform_device *fdev = fdata->dev;
> > > + struct platform_device *fdev;
> > > + struct dfl_feature *feature;
> > > int ret;
> > >
> > > + fdev = platform_device_alloc(fdata->pdev_name, fdata->pdev_id);
> > > + if (!fdev)
> > > + return -ENOMEM;
> > > +
> > > + fdata->dev = fdev;
> > > +
> > > fdev->dev.parent = &fdata->dfl_cdev->region->dev;
> > > fdev->dev.devt = dfl_get_devt(dfl_devs[fdata->type].devt_type, fdev->id);
> > >
> > > + dfl_fpga_dev_for_each_feature(fdata, feature)
> > > + feature->dev = fdev;
> > > +
> > > ret = platform_device_add_resources(fdev, fdata->resources,
> > > fdata->resource_num);
> > > if (ret)
> > > - return ret;
> > > + goto err_put_dev;
> > >
> > > pdata.fdata = fdata;
> > > ret = platform_device_add_data(fdev, &pdata, sizeof(pdata));
> > > if (ret)
> > > - return ret;
> > > + goto err_put_dev;
> > >
> > > ret = platform_device_add(fdev);
> > > if (ret)
> > > - return ret;
> > > + goto err_put_dev;
> > >
> > > return 0;
> > > +
> > > +err_put_dev:
> > > + platform_device_put(fdev);
> > > + fdata->dev = NULL;
> >
> > Do we also need to clean up all the feature->dev?
>
> Yes, thank you for the suggestion. It is not needed for functional
> correctness since feature->dev is exclusively used when non-NULL, but
> it seems a good idea for consistency.
This has been implemented in [PATCH v5 15/18].
Thanks,
Peter
>
> Thanks,
> Peter
>
> >
> > Thanks,
> > Yilun
> >
> > > +
> > > + return ret;
> > > }
> > >
> > > static void feature_dev_unregister(struct dfl_feature_dev_data *fdata)
> > > @@ -940,16 +937,7 @@ static int build_info_commit_dev(struct build_feature_devs_info *binfo)
> > > if (binfo->type == PORT_ID)
> > > dfl_fpga_cdev_add_port_data(binfo->cdev, fdata);
> > > else
> > > - binfo->cdev->fme_dev = get_device(&binfo->feature_dev->dev);
> > > -
> > > - /*
> > > - * reset it to avoid build_info_free() freeing their resource.
> > > - *
> > > - * The resource of successfully registered feature devices
> > > - * will be freed by platform_device_unregister(). See the
> > > - * comments in build_info_create_dev().
> > > - */
> > > - binfo->feature_dev = NULL;
> > > + binfo->cdev->fme_dev = get_device(&fdata->dev->dev);
> > >
> > > /* reset the binfo for next FIU */
> > > binfo->type = DFL_ID_MAX;
> > > @@ -966,8 +954,6 @@ static void build_info_free(struct build_feature_devs_info *binfo)
> > > kfree(finfo);
> > > }
> > >
> > > - platform_device_put(binfo->feature_dev);
> > > -
> > > devm_kfree(binfo->dev, binfo);
> > > }
> > >
> > > @@ -1262,8 +1248,7 @@ static int parse_feature_afu(struct build_feature_devs_info *binfo,
> > > case PORT_ID:
> > > return parse_feature_port_afu(binfo, ofst);
> > > default:
> > > - dev_info(binfo->dev, "AFU belonging to FIU %s is not supported yet.\n",
> > > - binfo->feature_dev->name);
> > > + dev_info(binfo->dev, "AFU belonging to FIU is not supported yet.\n");
> > > }
> > >
> > > return 0;
> > > --
> > > 2.47.0
> > >
> > >
>
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