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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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9
fs/jffs2/readinode.c
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@ -63,10 +63,11 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
/* TODO: instead, incapsulate point() stuff to jffs2_flash_read(),
* adding and jffs2_flash_read_end() interface. */
if (c->mtd->point) {
err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer);
err = c->mtd->point(c->mtd, ofs, len, &retlen,
(void **)&buffer, NULL);
if (!err && retlen < len) {
JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
c->mtd->unpoint(c->mtd, buffer, ofs, retlen);
c->mtd->unpoint(c->mtd, ofs, retlen);
} else if (err)
JFFS2_WARNING("MTD point failed: error code %d.\n", err);
else
@ -100,7 +101,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
kfree(buffer);
#ifndef __ECOS
else
c->mtd->unpoint(c->mtd, buffer, ofs, len);
c->mtd->unpoint(c->mtd, ofs, len);
#endif
if (crc != tn->data_crc) {
@ -136,7 +137,7 @@ free_out:
kfree(buffer);
#ifndef __ECOS
else
c->mtd->unpoint(c->mtd, buffer, ofs, len);
c->mtd->unpoint(c->mtd, ofs, len);
#endif
return err;
}