From 14ebf24175df0f216256c8483ee2974f35a1a89c Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 3 Jan 2020 17:41:58 +0100 Subject: [PATCH] mtd: onenand: samsung: Fix iomem access with regular memcpy 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] *[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] *[assigned] p drivers/mtd/nand/onenand/samsung_mtd.c:679:19: got unsigned char * Reported-by: kbuild test robot Signed-off-by: Krzysztof Kozlowski Signed-off-by: Miquel Raynal --- drivers/mtd/nand/onenand/samsung_mtd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/nand/onenand/samsung_mtd.c b/drivers/mtd/nand/onenand/samsung_mtd.c index 55e5536a5850..beb7987e4c2b 100644 --- a/drivers/mtd/nand/onenand/samsung_mtd.c +++ b/drivers/mtd/nand/onenand/samsung_mtd.c @@ -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; } -- 2.20.1