[PATCH v4 2/2] mtd: cfi_cmdset_0002: add support for Samsung K8D3x16UxC NOR chips

[Guillaume LECERF <glecerf@gmail.com>]

These chips report CFI v3.3 [1], so patch them on the fly to the more
correct v1.3.
Discussed and tested by the OpenWRT people [2].

[1] http://www.samsung.com/global/system/business/semiconductor/product/2007/6/11/NORFlash/32Mbit/K8D3216UBC/ds_K8D3x16UxC_rev17.pdf
[2] https://dev.openwrt.org/ticket/866

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
---
 drivers/mtd/chips/cfi_cmdset_0002.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index bf457a4..13cee2b 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -401,6 +401,14 @@ static void cfi_fixup_major_minor(struct cfi_private *cfi,
 
 			extp->MajorVersion = '1';
 		}
+		if (extp->MajorVersion == '3' && extp->MinorVersion == '3') {
+			/*
+			 * Samsung K8D3x16UxC chips report major=3 / minor=3
+			 */
+			printk(KERN_NOTICE "  Fixed Samsung's Amd/Fujitsu Extended Query version from 3.3 to 1.3\n");
+
+			extp->MajorVersion = '1';
+		}
 	}
 
 	/*