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: 34c5c01e0c8c ("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>

diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c
index 7ed1f87..49c546c 100644 (file)
--- a/drivers/mtd/nand/raw/nand_macronix.c
+++ b/drivers/mtd/nand/raw/nand_macronix.c
@@ -17,23 +17,47 @@
 
 #include <linux/mtd/rawnand.h>
 
+/*
+ * 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.
+ */
+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;
 
-       /*
-        * MX30LF2G18AC chip 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)) {
-               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);
-       }
+       macronix_nand_fix_broken_get_timings(chip);
 
        return 0;
 }