Commit 1743df83 authored by Alan Tull's avatar Alan Tull Committed by Greg Kroah-Hartman

fpga: region: check for child regions before allocing image info

During a device tree overlay pre-apply notification, the check
for child FPGA regions can happen slightly earlier.  This saves
us from allocating the FPGA image info that just gets thrown

This is a baby step in refactoring the FPGA region code to
separate out common FPGA region code from FPGA region
Device Tree overlay support.
Signed-off-by: default avatarAlan Tull <>
Acked-by: default avatarMoritz Fischer <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent 1df2dd7f
......@@ -355,15 +355,19 @@ static int fpga_region_notify_pre_apply(struct fpga_region *region,
const char *firmware_name;
int ret;
info = fpga_image_info_alloc(dev);
if (!info)
return -ENOMEM;
/* Reject overlay if child FPGA Regions have firmware-name property */
* Reject overlay if child FPGA Regions added in the overlay have
* firmware-name property (would mean that an FPGA region that has
* not been added to the live tree yet is doing FPGA programming).
ret = child_regions_with_firmware(nd->overlay);
if (ret)
return ret;
info = fpga_image_info_alloc(dev);
if (!info)
return -ENOMEM;
/* Read FPGA region properties from the overlay */
if (of_property_read_bool(nd->overlay, "partial-fpga-config"))
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