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mtd: onenand: allocate verify buffer in the core 

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;