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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

20
drivers/fpga/xilinx-spi.c
View File

@@ -143,6 +143,8 @@ static const struct fpga_manager_ops xilinx_spi_ops = {
static int xilinx_spi_probe(struct spi_device *spi)
{
struct xilinx_spi_conf *conf;
struct fpga_manager *mgr;
int ret;
conf = devm_kzalloc(&spi->dev, sizeof(*conf), GFP_KERNEL);
if (!conf)
@@ -165,13 +167,25 @@ static int xilinx_spi_probe(struct spi_device *spi)
return PTR_ERR(conf->done);
}
return fpga_mgr_register(&spi->dev, "Xilinx Slave Serial FPGA Manager",
&xilinx_spi_ops, conf);
mgr = fpga_mgr_create(&spi->dev, "Xilinx Slave Serial FPGA Manager",
&xilinx_spi_ops, conf);
if (!mgr)
return -ENOMEM;
spi_set_drvdata(spi, mgr);
ret = fpga_mgr_register(mgr);
if (ret)
fpga_mgr_free(mgr);
return ret;
}
static int xilinx_spi_remove(struct spi_device *spi)
{
fpga_mgr_unregister(&spi->dev);
struct fpga_manager *mgr = spi_get_drvdata(spi);
fpga_mgr_unregister(mgr);
return 0;
}