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authorBrian Norris <computersforpeace@gmail.com>2013-11-29 22:04:28 -0800
committerBrian Norris <computersforpeace@gmail.com>2014-03-10 22:42:23 -0700
commitbd9c6e99b58255b9de1982711ac9487c9a2f18be (patch)
treeb0c1ff4a9640b513b6a871679feb5c3ba55292c0 /drivers/mtd/devices/m25p80.c
parent3dad2344e92c6e1aeae42df1c4824f307c51bcc7 (diff)
downloadlinux-stable-bd9c6e99b58255b9de1982711ac9487c9a2f18be.tar.gz
mtd: nand: don't use read_buf for 8-bit ONFI transfers
Use a repeated read_byte() instead of read_buf(), since for x16 buswidth devices, we need to avoid the upper I/O[16:9] bits. See the following commit for reference: commit 05f7835975dad6b3b517f9e23415985e648fb875 Author: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Date: Thu Dec 5 22:22:04 2013 +0100 mtd: nand: don't use {read,write}_buf for 8-bit transfers Now, I think that all barriers to probing ONFI on x16 devices are removed, so remove the check from nand_flash_detect_onfi(). Tested on 8-bit ONFI NAND (Micron MT29F32G08CBADAWP). Signed-off-by: Brian Norris <computersforpeace@gmail.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-By: Pekon Gupta <pekon@ti.com>
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