mtd: CFI: quirk for PF38F4476.

This chip reports CFI 1.3, but the CFI PRI is like CFI 1.1. Add a quirk
to pass probe on this chip.

This patch depends on "MTD: CFI 1.0 and CFI 1.1"

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index c240454fd113..e772803b4959 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -46,6 +46,7 @@
 #define MANUFACTURER_INTEL      0x0089
 #define I82802AB        0x00ad
 #define I82802AC        0x00ac
+#define PF38F4476       0x881c
 #define MANUFACTURER_ST         0x0020
 #define M50LPW080       0x002F
 #define M50FLW080A      0x0080
@@ -315,9 +316,18 @@ static struct cfi_fixup fixup_table[] = {
         { 0, 0, NULL, NULL }
 };
 
+static void cfi_fixup_major_minor(struct cfi_private *cfi,
+                                                struct cfi_pri_intelext *extp)
+{
+        if (cfi->mfr == MANUFACTURER_INTEL &&
+                        cfi->id == PF38F4476 && extp->MinorVersion == '3')
+                extp->MinorVersion = '1';
+}
+
 static inline struct cfi_pri_intelext *
 read_pri_intelext(struct map_info *map, __u16 adr)
 {
+        struct cfi_private *cfi = map->fldrv_priv;
         struct cfi_pri_intelext *extp;
         unsigned int extp_size = sizeof(*extp);
 
@@ -326,6 +336,8 @@ read_pri_intelext(struct map_info *map, __u16 adr)
         if (!extp)
                 return NULL;
 
+        cfi_fixup_major_minor(cfi, extp);
+
         if (extp->MajorVersion != '1' ||
             (extp->MinorVersion < '0' || extp->MinorVersion > '5')) {
                 printk(KERN_ERR "  Unknown Intel/Sharp Extended Query "