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>

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index c240454..e772803 100644 (file)
--- 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 "