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Code Issues Releases Wiki Activity

mtd: onenand: samsung: Fix iomem access with regular memcpy

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The __iomem memory should be copied with memcpy_fromio.  This fixes
Sparse warnings like:

    drivers/mtd/nand/onenand/samsung_mtd.c:678:40: warning: incorrect type in argument 2 (different address spaces)
    drivers/mtd/nand/onenand/samsung_mtd.c:678:40:    expected void const *from
    drivers/mtd/nand/onenand/samsung_mtd.c:678:40:    got void [noderef] <asn:2> *[assigned] p
    drivers/mtd/nand/onenand/samsung_mtd.c:679:19: warning: incorrect type in assignment (different address spaces)
    drivers/mtd/nand/onenand/samsung_mtd.c:679:19:    expected void [noderef] <asn:2> *[assigned] p
    drivers/mtd/nand/onenand/samsung_mtd.c:679:19:    got unsigned char *

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Krzysztof Kozlowski 2020-01-03 17:41:58 +01:00 committed by Miquel Raynal
parent 44f45994f4
commit 14ebf24175
1 changed files with 4 additions and 4 deletions
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8
drivers/mtd/nand/onenand/samsung_mtd.c
View file

@ -675,12 +675,12 @@ static int s5pc110_read_bufferram(struct mtd_info *mtd, int area,
normal:
if (count != mtd->writesize) {
/* Copy the bufferram to memory to prevent unaligned access */
memcpy(this->page_buf, p, mtd->writesize);
p = this->page_buf + offset;
memcpy_fromio(this->page_buf, p, mtd->writesize);
memcpy(buffer, this->page_buf + offset, count);
} else {
memcpy_fromio(buffer, p, count);
}
memcpy(buffer, p, count);
return 0;
}