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| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-09-16 16:59:11 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2016-10-02 22:48:14 +0200 |
| commit | 4c368421bc1a2acc84beafcae37ed3733a4fa4fc (patch) | |
| tree | 02a93740f68b419062f214448225fa556fc5c892 | |
| parent | UBI: fix add_fastmap() to use the vid_hdr passed in argument (diff) | |
| download | linux-4c368421bc1a2acc84beafcae37ed3733a4fa4fc.tar.xz linux-4c368421bc1a2acc84beafcae37ed3733a4fa4fc.zip | |
UBI: fastmap: avoid multiple be32_to_cpu() when unneccesary
process_pool_aeb() does several times the be32_to_cpu(new_vh->vol_id)
operation. Create a temporary variable and do it once.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
| -rw-r--r-- | drivers/mtd/ubi/fastmap.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index a26dcc9d7703..ebb65ac6980f 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -370,24 +370,24 @@ static int process_pool_aeb(struct ubi_device *ubi, struct ubi_attach_info *ai, struct ubi_vid_hdr *new_vh, struct ubi_ainf_peb *new_aeb) { + int vol_id = be32_to_cpu(new_vh->vol_id); struct ubi_ainf_volume *av; - if (be32_to_cpu(new_vh->vol_id) == UBI_FM_SB_VOLUME_ID || - be32_to_cpu(new_vh->vol_id) == UBI_FM_DATA_VOLUME_ID) { + if (vol_id == UBI_FM_SB_VOLUME_ID || vol_id == UBI_FM_DATA_VOLUME_ID) { kmem_cache_free(ai->aeb_slab_cache, new_aeb); return 0; } /* Find the volume this SEB belongs to */ - av = ubi_find_av(ai, be32_to_cpu(new_vh->vol_id)); + av = ubi_find_av(ai, vol_id); if (!av) { ubi_err(ubi, "orphaned volume in fastmap pool!"); kmem_cache_free(ai->aeb_slab_cache, new_aeb); return UBI_BAD_FASTMAP; } - ubi_assert(be32_to_cpu(new_vh->vol_id) == av->vol_id); + ubi_assert(vol_id == av->vol_id); return update_vol(ubi, ai, av, new_vh, new_aeb); } |