Revision b135b3358d73aa2a8b2be35d08e422421d1c609e authored by Miquel Raynal on 19 January 2021, 15:55:10 UTC, committed by Miquel Raynal on 20 January 2021, 22:38:00 UTC
The OMAP driver may leverage software BCH logic to locate errors while using its own hardware to detect the presence of errors. This is achieved with a "mixed" mode which initializes manually the software BCH internal logic while providing its own OOB layout. The issue here comes from the fact that the BCH driver has been updated to only use generic NAND objects, and no longer depend on raw NAND structures as it is usable from SPI-NAND as well. However, at the end of the BCH context initialization, the driver checks the validity of the OOB layout. At this stage, the raw NAND fields have not been populated yet while being used by the layout helpers, leading to an invalid layout. The chosen solution here is to include the BCH structure definition and to refer to the BCH fields directly (de-referenced as a const pointer here) to know as early as possible the number of steps and ECC bytes which have been chosen. Note: I don't know which commit exactly triggered the error, but the entire migration to a generic BCH driver got merged in one go, so this should not be a problem for stable backports. Reported-by: Adam Ford <aford173@gmail.com> Fixes: 80fe603160a4 ("mtd: nand: ecc-bch: Stop using raw NAND structures") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: Adam Ford <aford173@gmail.com> #logicpd-torpedo-37xx-devkit-28.dts Link: https://lore.kernel.org/linux-mtd/20210119155510.5655-1-miquel.raynal@bootlin.com
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# SPDX-License-Identifier: GPL-2.0
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# For more information, see:
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