From: David Woodhouse Date: Wed, 1 Nov 2006 00:19:20 +0000 (+0800) Subject: [MTD] NAND: Fix ECC settings in CAFÉ controller driver. X-Git-Tag: v2.6.20-rc6~47^2~37^2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cad40654c312fc51bdb520e9be91e29a9742bbcb;p=linux-2.6 [MTD] NAND: Fix ECC settings in CAFÉ controller driver. We were resetting cafe->ctl2 to zero after an erase (and also during a write, but it was correctly reset after that). This meant that ECC reads after an erase were failing. Doh. Signed-off-by: David Woodhouse --- diff --git a/drivers/mtd/nand/cafe.c b/drivers/mtd/nand/cafe.c index c5d03b07f7..fad304bf7b 100644 --- a/drivers/mtd/nand/cafe.c +++ b/drivers/mtd/nand/cafe.c @@ -159,6 +159,7 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command, /* Second half of a command we already calculated */ cafe_writel(cafe, cafe->ctl2 | 0x100 | command, NAND_CTRL2); ctl1 = cafe->ctl1; + cafe->ctl2 &= ~(1<<30); cafe_dev_dbg(&cafe->pdev->dev, "Continue command, ctl1 %08x, #data %d\n", cafe->ctl1, cafe->nr_data); goto do_command; @@ -219,7 +220,6 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command, /* Ignore the first command of a pair; the hardware deals with them both at once, later */ cafe->ctl1 = ctl1; - cafe->ctl2 = 0; cafe_dev_dbg(&cafe->pdev->dev, "Setup for delayed command, ctl1 %08x, dlen %x\n", cafe->ctl1, cafe->datalen); return; @@ -281,9 +281,7 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command, command, 500000-c, irqs, cafe_readl(cafe, NAND_IRQ)); } - - cafe->ctl2 &= ~(1<<8); - cafe->ctl2 &= ~(1<<30); + WARN_ON(cafe->ctl2 & (1<<30)); switch (command) { @@ -471,9 +469,7 @@ static void cafe_nand_write_page_lowlevel(struct mtd_info *mtd, chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); /* Set up ECC autogeneration */ - cafe->ctl2 |= (1<<27) | (1<<30); - if (mtd->writesize == 2048) - cafe->ctl2 |= (1<<29); + cafe->ctl2 |= (1<<30); } static int cafe_nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,