fpga: do not access region struct after fpga_region_unregister
A couple drivers were accessing the region struct after it had been
freed. Save off the pointer to the mgr before the region struct gets
freed.
Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
index 35fabb8..052a134 100644
--- a/drivers/fpga/of-fpga-region.c
+++ b/drivers/fpga/of-fpga-region.c
@@ -437,9 +437,10 @@ static int of_fpga_region_probe(struct platform_device *pdev)
static int of_fpga_region_remove(struct platform_device *pdev)
{
struct fpga_region *region = platform_get_drvdata(pdev);
+ struct fpga_manager *mgr = region->mgr;
fpga_region_unregister(region);
- fpga_mgr_put(region->mgr);
+ fpga_mgr_put(mgr);
return 0;
}