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xen/grant-table: add error-handling code on failure of gnttab_resume

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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>
This commit is contained in:
Julia Lawall 2012-04-15 11:27:12 +02:00 committed by Konrad Rzeszutek Wilk
parent f09d8432e3
commit 6b5e7d9ef7
1 changed files with 9 additions and 4 deletions
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13
drivers/xen/grant-table.c
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@ -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);