diff options
Diffstat (limited to 'drivers/of/fdt.c')
| -rw-r--r-- | drivers/of/fdt.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 26f66046cc32..a64afc3ded3d 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -878,11 +878,12 @@ static unsigned long chosen_node_offset = -FDT_ERR_NOTFOUND; /* * The main usage of linux,usable-memory-range is for crash dump kernel. * Originally, the number of usable-memory regions is one. Now there may - * be two regions, low region and high region. - * To make compatibility with existing user-space and older kdump, the low - * region is always the last range of linux,usable-memory-range if exist. + * be 2 + CRASHK_CMA_RANGES_MAX regions, low region, high region and cma + * regions. To make compatibility with existing user-space and older kdump, + * the high and low region are always the first two ranges of + * linux,usable-memory-range if exist. */ -#define MAX_USABLE_RANGES 2 +#define MAX_USABLE_RANGES (2 + CRASHK_CMA_RANGES_MAX) /** * early_init_dt_check_for_usable_mem_range - Decode usable memory range |