mtd: nand: sunxi: fix OOB handling in ->write_xxx() functions

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The USER_DATA register cannot be accessed using byte accessors on A13
SoCs, thus triggering a bug when using memcpy_toio on this register.
Declare an helper macros to convert an OOB buffer into a suitable
USER_DATA value and vice-versa.

This patch also fixes an error in the oob_required logic (some OOB data
are not written even if the user required it) by removing the
oob_required condition, which is perfectly valid since the core already
fill ->oob_poi with FFs when oob_required is false.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: <stable@vger.kernel.org> # 3.19+
Fixes: 1fef62c142 ("mtd: nand: add sunxi NAND flash controller support")
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

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Boris BREZILLON 2015-09-14 10:41:03 +02:00 • committed by Brian Norris

parent 6ff33f3902

commit 03a0e8a7c5

1 changed files with 9 additions and 17 deletions

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drivers/mtd/nand/sunxi_nand.c

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