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
--- 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 @@
{ 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 @@
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 "