memsize denotes the amount of RAM we can access from kseg{0,1} and
that should be up to 256M. In case the bootloader reports a value
higher than that (perhaps reporting all the available RAM) it's best
if we fix it ourselves and just warn the user about that. This is
usually a problem with the bootloader and/or its environment.
Cc: <stable@xxxxxxxxxxxxxxx> # v3.15+
Signed-off-by: Markos Chandras <markos.chandras@xxxxxxxxxx>
---
arch/mips/mti-malta/malta-memory.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/mips/mti-malta/malta-memory.c b/arch/mips/mti-malta/malta-memory.c
index 8fddd2cdbff7..3a0a06450ef8 100644
--- a/arch/mips/mti-malta/malta-memory.c
+++ b/arch/mips/mti-malta/malta-memory.c
@@ -53,6 +53,11 @@ fw_memblock_t * __init fw_getmdesc(int eva)
pr_warn("memsize not set in YAMON, set to default (32Mb)\n");
physical_memsize = 0x02000000;
} else {
+ if (memsize > (256 << 20)) { /* memsize should be capped to 256M */
+ pr_warn("Unsupported memsize value (0x%lx) detected! Using 0x10000000 (256M) instead\n",
+ memsize);
+ memsize = (256 << 20);
+ }
/* If ememsize is set, then set physical_memsize to that */
physical_memsize = ememsize ? : memsize;
}
--
2.3.0
