[PATCH] Really ignore kmem_cache_destroy return value

* Rougly half of callers already do it by not checking return value
* Code in drivers/acpi/osl.c does the following to be sure:

	(void)kmem_cache_destroy(cache);

* Those who check it printk something, however, slab_error already printed
  the name of failed cache.
* XFS BUGs on failed kmem_cache_destroy which is not the decision
  low-level filesystem driver should make. Converted to ignore.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 4 insertions, 11 deletions

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 507f051d1cef..20beea778ea2 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -1079,7 +1079,7 @@ acpi_status acpi_os_purge_cache(acpi_cache_t * cache)
 
 acpi_status acpi_os_delete_cache(acpi_cache_t * cache)
 {
-        (void)kmem_cache_destroy(cache);
+        kmem_cache_destroy(cache);
         return (AE_OK);
 }
 
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 082f03c158f0..493f4c65c7a2 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2987,10 +2987,7 @@ error1:
 static void __exit ib_mad_cleanup_module(void)
 {
         ib_unregister_client(&mad_client);
-
-        if (kmem_cache_destroy(ib_mad_cache)) {
-                printk(KERN_DEBUG PFX "Failed to destroy ib_mad cache\n");
-        }
+        kmem_cache_destroy(ib_mad_cache);
 }
 
 module_init(ib_mad_init_module);
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index b7402ceb3e93..eb4eab98e8bf 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -913,8 +913,7 @@ static int __init uhci_hcd_init(void)
         return 0;
 
 init_failed:
-        if (kmem_cache_destroy(uhci_up_cachep))
-                warn("not all urb_privs were freed!");
+        kmem_cache_destroy(uhci_up_cachep);
 
 up_failed:
         debugfs_remove(uhci_debugfs_root);
@@ -930,10 +929,7 @@ errbuf_failed:
 static void __exit uhci_hcd_cleanup(void) 
 {
         pci_unregister_driver(&uhci_pci_driver);
-        
-        if (kmem_cache_destroy(uhci_up_cachep))
-                warn("not all urb_privs were freed!");
-
+        kmem_cache_destroy(uhci_up_cachep);
         debugfs_remove(uhci_debugfs_root);
         kfree(errbuf);
 }