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mtd: onenand: allocate verify buffer in the core

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This patch extends OneNAND core code with support for OneNAND verify
write check. This is done by allocating the buffer for verify read
directly from the core code.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Kyungmin Park 2010-04-28 17:46:46 +02:00 committed by David Woodhouse
parent 6a88c47bd5
commit 4a8ce0b030
2 changed files with 15 additions and 1 deletions
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13
drivers/mtd/onenand/onenand_base.c
View File

@ -3932,6 +3932,13 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
__func__);
return -ENOMEM;
}
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
this->verify_buf = kzalloc(mtd->writesize, GFP_KERNEL);
if (!this->verify_buf) {
kfree(this->page_buf);
return -ENOMEM;
}
#endif
this->options |= ONENAND_PAGEBUF_ALLOC;
}
if (!this->oob_buf) {
@ -4059,8 +4066,12 @@ void onenand_release(struct mtd_info *mtd)
kfree(this->bbm);
}
/* Buffers allocated by onenand_scan */
if (this->options & ONENAND_PAGEBUF_ALLOC)
if (this->options & ONENAND_PAGEBUF_ALLOC) {
kfree(this->page_buf);
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
kfree(this->verify_buf);
#endif
}
if (this->options & ONENAND_OOBBUF_ALLOC)
kfree(this->oob_buf);
kfree(mtd->eraseregions);

3
include/linux/mtd/onenand.h
View File

@ -125,6 +125,9 @@ struct onenand_chip {
flstate_t state;
unsigned char *page_buf;
unsigned char *oob_buf;
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
unsigned char *verify_buf;
#endif
int subpagesize;
struct nand_ecclayout *ecclayout;