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| author | Chen Gang <gang.chen.5i5j@gmail.com> | 2014-08-26 17:38:44 +0200 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2014-09-23 15:36:18 +0200 |
| commit | 46e3626adb86be2ff1321d26107cb75df07a7f4e (patch) | |
| tree | 8f8c4086c020ba9f22e180b8177e7d2816aad5a4 /drivers/xen/grant-table.c | |
| parent | xen/setup: Remap Xen Identity Mapped RAM (diff) | |
| download | linux-46e3626adb86be2ff1321d26107cb75df07a7f4e.tar.xz linux-46e3626adb86be2ff1321d26107cb75df07a7f4e.zip | |
xen/grant-table: refactor error cleanup in grow_gnttab_list()
The cleanup loop in grow_gnttab_list() is safe from the underflow of
the unsigned 'i' since nr_glist_frames is >= 1, but refactor it
anyway.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'drivers/xen/grant-table.c')
| -rw-r--r-- | drivers/xen/grant-table.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index c254ae036f18..7786291ba229 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -592,7 +592,7 @@ static int grow_gnttab_list(unsigned int more_frames) return 0; grow_nomem: - for ( ; i >= nr_glist_frames; i--) + while (i-- > nr_glist_frames) free_page((unsigned long) gnttab_list[i]); return -ENOMEM; } |