The default implementation of ERR_PTR/PTR_ERR maps errno values at the and of the address range (e.g. -EINVAL/-22 gets 0xFFFFFFEA).
For socfpga gen5 SPL, this doesn't really work, as the heap is nearly at the end of the 32 bit address range.
This patch adjusts the ERR_PTR_OFFSET to map errno values into the range of the Boot ROM, which should not be used for valid pointers.
Signed-off-by: Simon Goldschmidt simon.k.r.goldschmidt@gmail.com ---
arch/arm/mach-socfpga/Kconfig | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm/mach-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig index fc0a54214f..3770e07258 100644 --- a/arch/arm/mach-socfpga/Kconfig +++ b/arch/arm/mach-socfpga/Kconfig @@ -1,5 +1,8 @@ if ARCH_SOCFPGA
+config ERR_PTR_OFFSET + default 0xfffec000 if TARGET_SOCFPGA_GEN5 # Boot ROM range + config NR_DRAM_BANKS default 1