acrn-kernel/arch/mips/ralink
Andreas Rammhold c4849f1818 of/fdt: run soc memory setup when early_init_dt_scan_memory fails
commit 2a12187d58 upstream.

If memory has been found early_init_dt_scan_memory now returns 1. If
it hasn't found any memory it will return 0, allowing other memory
setup mechanisms to carry on.

Previously early_init_dt_scan_memory always returned 0 without
distinguishing between any kind of memory setup being done or not. Any
code path after the early_init_dt_scan memory call in the ramips
plat_mem_setup code wouldn't be executed anymore. Making
early_init_dt_scan_memory the only way to initialize the memory.

Some boards, including my mt7621 based Cudy X6 board, depend on memory
initialization being done via the soc_info.mem_detect function
pointer. Those wouldn't be able to obtain memory and panic the kernel
during early bootup with the message "early_init_dt_alloc_memory_arch:
Failed to allocate 12416 bytes align=0x40".

Fixes: 1f012283e9 ("of/fdt: Rework early_init_dt_scan_memory() to call directly")
Cc: stable@vger.kernel.org
Signed-off-by: Andreas Rammhold <andreas@rammhold.de>
Link: https://lore.kernel.org/r/20221223112748.2935235-1-andreas@rammhold.de
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-12 12:02:51 +01:00
..
Kconfig
Makefile
Platform
bootrom.c
cevt-rt3352.c
clk.c
common.h
early_printk.c
ill_acc.c
irq-gic.c
irq.c
mt7620.c
mt7621.c mips: ralink: mt7621: do not use kzalloc too early 2022-12-21 17:48:03 +01:00
of.c of/fdt: run soc memory setup when early_init_dt_scan_memory fails 2023-01-12 12:02:51 +01:00
prom.c
reset.c
rt288x.c
rt305x.c
rt3883.c
timer-gic.c
timer.c