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authorJulia Lawall <Julia.Lawall@lip6.fr>2012-04-15 11:27:12 +0200
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-04-17 00:29:32 -0400
commit6b5e7d9ef793c55d72679f058514f33c4258f286 (patch)
treebf1141323d954701cabe8059f3afbabd813da813 /drivers/xen
parentf09d8432e39797abf39531f41ac8a46a3fbf442a (diff)
downloadlinux-linaro-stable-6b5e7d9ef793c55d72679f058514f33c4258f286.tar.gz
xen/grant-table: add error-handling code on failure of gnttab_resume
Jump to the label ini_nomem as done on the failure of the page allocations above. The code at ini_nomem is modified to accommodate different return values. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/grant-table.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 1cd94daa71db..f805918a993f 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -1026,6 +1026,7 @@ int gnttab_init(void)
int i;
unsigned int max_nr_glist_frames, nr_glist_frames;
unsigned int nr_init_grefs;
+ int ret;
nr_grant_frames = 1;
boot_max_nr_grant_frames = __max_nr_grant_frames();
@@ -1044,12 +1045,16 @@ int gnttab_init(void)
nr_glist_frames = (nr_grant_frames * GREFS_PER_GRANT_FRAME + RPP - 1) / RPP;
for (i = 0; i < nr_glist_frames; i++) {
gnttab_list[i] = (grant_ref_t *)__get_free_page(GFP_KERNEL);
- if (gnttab_list[i] == NULL)
+ if (gnttab_list[i] == NULL) {
+ ret = -ENOMEM;
goto ini_nomem;
+ }
}
- if (gnttab_resume() < 0)
- return -ENODEV;
+ if (gnttab_resume() < 0) {
+ ret = -ENODEV;
+ goto ini_nomem;
+ }
nr_init_grefs = nr_grant_frames * GREFS_PER_GRANT_FRAME;
@@ -1067,7 +1072,7 @@ int gnttab_init(void)
for (i--; i >= 0; i--)
free_page((unsigned long)gnttab_list[i]);
kfree(gnttab_list);
- return -ENOMEM;
+ return ret;
}
EXPORT_SYMBOL_GPL(gnttab_init);