aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-frv/scatterlist.h
diff options
context:
space:
mode:
authorJens Axboe <jens.axboe@oracle.com>2007-10-23 06:39:41 -0400
committerJens Axboe <jens.axboe@oracle.com>2007-10-23 06:42:46 -0400
commitd09d276ebf62afdaed5f7bab6e7e340ffbde4dd1 (patch)
tree17c91be8b89d26f704f2656ee01f53cafbf3675b /include/asm-frv/scatterlist.h
parent26da10784866974d3e87ba998c66458c305777ca (diff)
frv: update comment in scatterlist to reflect new setup
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/asm-frv/scatterlist.h')
-rw-r--r--include/asm-frv/scatterlist.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/asm-frv/scatterlist.h b/include/asm-frv/scatterlist.h
index f7da007b763..99ba76edc42 100644
--- a/include/asm-frv/scatterlist.h
+++ b/include/asm-frv/scatterlist.h
@@ -4,19 +4,19 @@
4#include <asm/types.h> 4#include <asm/types.h>
5 5
6/* 6/*
7 * Drivers must set either ->address or (preferred) ->page and ->offset 7 * Drivers must set either ->address or (preferred) page and ->offset
8 * to indicate where data must be transferred to/from. 8 * to indicate where data must be transferred to/from.
9 * 9 *
10 * Using ->page is recommended since it handles highmem data as well as 10 * Using page is recommended since it handles highmem data as well as
11 * low mem. ->address is restricted to data which has a virtual mapping, and 11 * low mem. ->address is restricted to data which has a virtual mapping, and
12 * it will go away in the future. Updating to ->page can be automated very 12 * it will go away in the future. Updating to page can be automated very
13 * easily -- something like 13 * easily -- something like
14 * 14 *
15 * sg->address = some_ptr; 15 * sg->address = some_ptr;
16 * 16 *
17 * can be rewritten as 17 * can be rewritten as
18 * 18 *
19 * sg->page = virt_to_page(some_ptr); 19 * sg_set_page(virt_to_page(some_ptr));
20 * sg->offset = (unsigned long) some_ptr & ~PAGE_MASK; 20 * sg->offset = (unsigned long) some_ptr & ~PAGE_MASK;
21 * 21 *
22 * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens 22 * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens