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[MTD][NOR] Add physical address to point() method

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Adding the ability to get a physical address from point() in addition
to virtual address.  This physical address is required for XIP of
userspace code from flash.

Signed-off-by: Jared Hulbert <jaredeh@gmail.com>
Reviewed-by: Jörn Engel <joern@logfs.org>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Jared Hulbert
2008-04-29 23:26:49 -07:00
committed by David Woodhouse
parent 27c72b040c
commit a98889f3d8
12 changed files with 77 additions and 51 deletions
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7
fs/jffs2/scan.c
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@@ -97,11 +97,12 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
size_t pointlen;
if (c->mtd->point) {
ret = c->mtd->point (c->mtd, 0, c->mtd->size, &pointlen, &flashbuf);
ret = c->mtd->point(c->mtd, 0, c->mtd->size, &pointlen,
(void **)&flashbuf, NULL);
if (!ret && pointlen < c->mtd->size) {
/* Don't muck about if it won't let us point to the whole flash */
D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", pointlen));
c->mtd->unpoint(c->mtd, flashbuf, 0, pointlen);
c->mtd->unpoint(c->mtd, 0, pointlen);
flashbuf = NULL;
}
if (ret)
@@ -267,7 +268,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
kfree(flashbuf);
#ifndef __ECOS
else
c->mtd->unpoint(c->mtd, flashbuf, 0, c->mtd->size);
c->mtd->unpoint(c->mtd, 0, c->mtd->size);
#endif
if (s)
kfree(s);