mtd: rawnand: Inline onfi_get_async_timing_mode()

onfi_get_async_timing_mode() is only used in one place inside
nand_base.c. Let's inline the code and kill the helper.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/nand_base.c

@@ -1310,8 +1310,9 @@ static int nand_init_data_interface(struct nand_chip *chip)
 	 * if the NAND does not support ONFI, fallback to the default ONFI
 	 * timing mode.
 	 */
-	modes = onfi_get_async_timing_mode(chip);
-	if (modes == ONFI_TIMING_MODE_UNKNOWN) {
+	if (chip->parameters.onfi) {
+		modes = chip->parameters.onfi->async_timing_mode;
+	} else {
 		if (!chip->onfi_timing_mode_default)
 			return 0;
 

include/linux/mtd/rawnand.h

@@ -1540,15 +1540,6 @@ int nand_isbad_bbt(struct nand_chip *chip, loff_t offs, int allowbbt);
 int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr,
 		    int allowbbt);
 
-/* return the supported asynchronous timing mode. */
-static inline int onfi_get_async_timing_mode(struct nand_chip *chip)
-{
-	if (!chip->parameters.onfi)
-		return ONFI_TIMING_MODE_UNKNOWN;
-
-	return chip->parameters.onfi->async_timing_mode;
-}
-
 int onfi_fill_data_interface(struct nand_chip *chip,
 			     enum nand_data_interface_type type,
 			     int timing_mode);