mtd: rawnand: make subop helpers return unsigned values

A report from Colin Ian King pointed a CoverityScan issue where error
values on these helpers where not checked in the drivers. These
helpers can error out only in case of a software bug in driver code,
not because of a runtime/hardware error. Hence, let's WARN_ON() in this
case and return 0 which is harmless anyway.

Fixes: 8878b126df76 ("mtd: nand: add ->exec_op() implementation")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

1 files changed, 8 insertions, 8 deletions

diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index f60fad29eae6..598d356de83f 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -1007,14 +1007,14 @@ struct nand_subop {
         unsigned int last_instr_end_off;
 };
 
-int nand_subop_get_addr_start_off(const struct nand_subop *subop,
-                                  unsigned int op_id);
-int nand_subop_get_num_addr_cyc(const struct nand_subop *subop,
-                                unsigned int op_id);
-int nand_subop_get_data_start_off(const struct nand_subop *subop,
-                                  unsigned int op_id);
-int nand_subop_get_data_len(const struct nand_subop *subop,
-                            unsigned int op_id);
+unsigned int nand_subop_get_addr_start_off(const struct nand_subop *subop,
+                                           unsigned int op_id);
+unsigned int nand_subop_get_num_addr_cyc(const struct nand_subop *subop,
+                                         unsigned int op_id);
+unsigned int nand_subop_get_data_start_off(const struct nand_subop *subop,
+                                           unsigned int op_id);
+unsigned int nand_subop_get_data_len(const struct nand_subop *subop,
+                                     unsigned int op_id);
 
 /**
  * struct nand_op_parser_addr_constraints - Constraints for address instructions