From 28d929d6695fd629c6f6ecd700044ca75ecef00f Mon Sep 17 00:00:00 2001 From: Nitin Garg Date: Thu, 12 May 2011 10:00:04 -0500 Subject: [PATCH] As per ONFI standard, the size of NAND Flash device is Number of data bytes per page * Number of pages per block * Number of blocks per logical unit * Number of logical units. The nand_flash_detect_onfi function is missing the Number of logical units due to which the kernel detects wrong size of Micron MT29F8G08ADADAH4 NAND Flash as it has 2 logical units. This patch fixes this issue by multiplying p->lun_count for chipsize. Signed-off-by: Nitin Garg --- drivers/mtd/nand/nand_base.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index c54a4cb..cdf6015 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2892,7 +2892,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, mtd->writesize = le32_to_cpu(p->byte_per_page); mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); - chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; + chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * le32_to_cpu(p->lun_count) * mtd->erasesize; busw = 0; if (le16_to_cpu(p->features) & 1) busw = NAND_BUSWIDTH_16; -- 1.5.5.6