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fpga: manager: change api, don't use drvdata

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Change fpga_mgr_register to not set or use drvdata.  This supports
the case where a PCIe device has more than one manager.

Add fpga_mgr_create/free functions.  Change fpga_mgr_register and
fpga_mgr_unregister functions to take the mgr struct as their only
parameter.

  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);
  void fpga_mgr_unregister(struct fpga_manager *mgr);

Update the drivers that call fpga_mgr_register with the new API.

Signed-off-by: Alan Tull <atull@kernel.org>
[Moritz: Fixup whitespace issue]
Reported-by: Jiuyue Ma <majiuyue@huawei.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Tull
2018-05-16 18:49:55 -05:00
committed by Greg Kroah-Hartman
parent bbaa9cd3a6
commit 7085e2a94f
13 changed files with 237 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/fpga/altera-cvp.c
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@@ -401,6 +401,7 @@ static int altera_cvp_probe(struct pci_dev *pdev,
const struct pci_device_id *dev_id)
{
struct altera_cvp_conf *conf;
struct fpga_manager *mgr;
u16 cmd, val;
int ret;
@@ -452,16 +453,24 @@ 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));
ret = fpga_mgr_register(&pdev->dev, conf->mgr_name,
&altera_cvp_ops, conf);
if (ret)
mgr = fpga_mgr_create(&pdev->dev, conf->mgr_name,
&altera_cvp_ops, conf);
if (!mgr)
return -ENOMEM;
pci_set_drvdata(pdev, mgr);
ret = fpga_mgr_register(mgr);
if (ret) {
fpga_mgr_free(mgr);
goto err_unmap;
}
ret = driver_create_file(&altera_cvp_driver.driver,
&driver_attr_chkcfg);
if (ret) {
dev_err(&pdev->dev, "Can't create sysfs chkcfg file\n");
fpga_mgr_unregister(&pdev->dev);
fpga_mgr_unregister(mgr);
goto err_unmap;
}
@@ -483,7 +492,7 @@ static void altera_cvp_remove(struct pci_dev *pdev)
u16 cmd;
driver_remove_file(&altera_cvp_driver.driver, &driver_attr_chkcfg);
fpga_mgr_unregister(&pdev->dev);
fpga_mgr_unregister(mgr);
pci_iounmap(pdev, conf->map);
pci_release_region(pdev, CVP_BAR);
pci_read_config_word(pdev, PCI_COMMAND, &cmd);