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| author | Alan Tull <atull@kernel.org> | 2017-11-15 14:20:24 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-28 16:30:38 +0100 |
| commit | 503d4b7a446b3838785fa7f21e339941a5d1c2d5 (patch) | |
| tree | 7647ec3740241624156eaa4f22b7e4b90ab39ecf /drivers/fpga/fpga-region.c | |
| parent | 52a3a7ccce07e73323fc1bae9eb0b0b63375391c (diff) | |
| download | lwn-503d4b7a446b3838785fa7f21e339941a5d1c2d5.tar.gz lwn-503d4b7a446b3838785fa7f21e339941a5d1c2d5.zip | |
fpga: region: add fpga_region_class_find
Add a function for searching the fpga-region class. This
will be useful when device tree code is no longer in the
same file that declares the fpga-region class. Another
step in separating common FPGA region code from device
tree support.
Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga/fpga-region.c')
| -rw-r--r-- | drivers/fpga/fpga-region.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c index 76db81de2cc0..5c0869576cd1 100644 --- a/drivers/fpga/fpga-region.c +++ b/drivers/fpga/fpga-region.c @@ -30,6 +30,20 @@ static DEFINE_IDA(fpga_region_ida); static struct class *fpga_region_class; +struct fpga_region *fpga_region_class_find( + struct device *start, const void *data, + int (*match)(struct device *, const void *)) +{ + struct device *dev; + + dev = class_find_device(fpga_region_class, start, data, match); + if (!dev) + return NULL; + + return to_fpga_region(dev); +} +EXPORT_SYMBOL_GPL(fpga_region_class_find); + static const struct of_device_id fpga_region_of_match[] = { { .compatible = "fpga-region", }, {}, @@ -51,14 +65,7 @@ static int fpga_region_of_node_match(struct device *dev, const void *data) */ static struct fpga_region *of_fpga_region_find(struct device_node *np) { - struct device *dev; - - dev = class_find_device(fpga_region_class, NULL, np, - fpga_region_of_node_match); - if (!dev) - return NULL; - - return to_fpga_region(dev); + return fpga_region_class_find(NULL, np, fpga_region_of_node_match); } /** |