mtd: rawnand: All AC chips have a broken GET_FEATURES(TIMINGS).

Make sure we flag all broken chips as not supporting this feature.
Also move this logic to a new function to keep things readable.

Fixes: 34c5c01e ("mtd: rawnand: macronix: nack the support of changing timings for one chip")
Cc: <stable@vger.kernel.org>
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/nand_macronix.c

@@ -17,23 +17,47 @@
 
 #include <linux/mtd/rawnand.h>
 
-static int macronix_nand_init(struct nand_chip *chip)
-{
-	if (nand_is_slc(chip))
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
-
-	/*
-	 * MX30LF2G18AC chip does not support using SET/GET_FEATURES to change
+/*
+ * Macronix AC series does not support using SET/GET_FEATURES to change
  * the timings unlike what is declared in the parameter page. Unflag
  * this feature to avoid unnecessary downturns.
  */
-	if (chip->parameters.supports_set_get_features &&
-	    !strcmp("MX30LF2G18AC", chip->parameters.model)) {
+static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip)
+{
+	unsigned int i;
+	static const char * const broken_get_timings[] = {
+		"MX30LF1G18AC",
+		"MX30LF1G28AC",
+		"MX30LF2G18AC",
+		"MX30LF2G28AC",
+		"MX30LF4G18AC",
+		"MX30LF4G28AC",
+		"MX60LF8G18AC",
+	};
+
+	if (!chip->parameters.supports_set_get_features)
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(broken_get_timings); i++) {
+		if (!strcmp(broken_get_timings[i], chip->parameters.model))
+			break;
+	}
+
+	if (i == ARRAY_SIZE(broken_get_timings))
+		return;
+
 	bitmap_clear(chip->parameters.get_feature_list,
 		     ONFI_FEATURE_ADDR_TIMING_MODE, 1);
 	bitmap_clear(chip->parameters.set_feature_list,
 		     ONFI_FEATURE_ADDR_TIMING_MODE, 1);
-	}
+}
+
+static int macronix_nand_init(struct nand_chip *chip)
+{
+	if (nand_is_slc(chip))
+		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+
+	macronix_nand_fix_broken_get_timings(chip);
 
 	return 0;
 }