[PATCH v3 3/9] mtd: rawnand: onfi: Fix redundancy detection check

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



During ONFI detection, the CRC derived from the parameter page and the
CRC supposed to be at the end of the parameter page are compared. If
they do not match, the second then the third copies of the page are
tried.

The current implementation compares the newly derived CRC with the CRC
contained in the first page only. So if this particular CRC area has
been corrupted, then the detection will fail for a wrong reason.

Fix this issue by checking the derived CRC against the right one.

Fixes: 39138c1f4a31 ("mtd: rawnand: use bit-wise majority to recover the ONFI param page")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
---
 drivers/mtd/nand/raw/nand_onfi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/nand_onfi.c b/drivers/mtd/nand/raw/nand_onfi.c
index 0b879bd0a68c..8fe8d7bdd203 100644
--- a/drivers/mtd/nand/raw/nand_onfi.c
+++ b/drivers/mtd/nand/raw/nand_onfi.c
@@ -173,7 +173,7 @@ int nand_onfi_detect(struct nand_chip *chip)
 		}
 
 		if (onfi_crc16(ONFI_CRC_BASE, (u8 *)&p[i], 254) ==
-				le16_to_cpu(p->crc)) {
+		    le16_to_cpu(p[i].crc)) {
 			if (i)
 				memcpy(p, &p[i], sizeof(*p));
 			break;
-- 
2.20.1




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux