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mtd: gpmi-nand: fix read page when reading to vmalloced area 

The gpmi-nand driver uses virt_addr_valid() to check whether a buffer
is suitable for dma. If it's not, a driver allocated buffer is used
instead. Then after a page read the driver allocated buffer must be
copied to the user supplied buffer. This does not happen since commit
7725cc8593.

This patch fixes the issue. The bug is encountered with UBI which uses a
vmalloced buffer for the volume table.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: snijsure@grid-net.com
Acked-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Sascha Hauer 2012-06-26 17:26:16 +02:00 committed by David Woodhouse
parent 096bcc231f
commit 6023813a2d
1 changed files with 5 additions and 5 deletions
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10
drivers/mtd/nand/gpmi-nand/gpmi-nand.c
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@ -920,12 +920,12 @@ static int gpmi_ecc_read_page(struct mtd_info *mtd, struct nand_chip *chip,
*/
memset(chip->oob_poi, ~0, mtd->oobsize);
chip->oob_poi[0] = ((uint8_t *) auxiliary_virt)[0];
read_page_swap_end(this, buf, mtd->writesize,
this->payload_virt, this->payload_phys,
nfc_geo->payload_size,
payload_virt, payload_phys);
}
read_page_swap_end(this, buf, mtd->writesize,
this->payload_virt, this->payload_phys,
nfc_geo->payload_size,
payload_virt, payload_phys);
exit_nfc:
return ret;
}