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-rw-r--r--drivers/mtd/parsers/ofpart_core.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/mtd/parsers/ofpart_core.c b/drivers/mtd/parsers/ofpart_core.c
index 192190c42..e7b8e9d0a 100644
--- a/drivers/mtd/parsers/ofpart_core.c
+++ b/drivers/mtd/parsers/ofpart_core.c
@@ -122,6 +122,25 @@ static int parse_fixed_partitions(struct mtd_info *master,
a_cells = of_n_addr_cells(pp);
s_cells = of_n_size_cells(pp);
+ if (!dedicated && s_cells == 0) {
+ /*
+ * This is a ugly workaround to not create
+ * regression on devices that are still creating
+ * partitions as direct children of the nand controller.
+ * This can happen in case the nand controller node has
+ * #size-cells equal to 0 and the firmware (e.g.
+ * U-Boot) just add the partitions there assuming
+ * 32-bit addressing.
+ *
+ * If you get this warning your firmware and/or DTS
+ * should be really fixed.
+ *
+ * This is working only for devices smaller than 4GiB.
+ */
+ pr_warn("%s: ofpart partition %pOF (%pOF) #size-cells is wrongly set to <0>, assuming <1> for parsing partitions.\n",
+ master->name, pp, mtd_node);
+ s_cells = 1;
+ }
if (len / 4 != a_cells + s_cells) {
pr_debug("%s: ofpart partition %pOF (%pOF) error parsing reg property.\n",
master->name, pp,