diff mbox

powerpc/pseries: fix error return value in cmm_mem_going_offline

Message ID 1457472378-22274-1-git-send-email-linux@rasmusvillemoes.dk (mailing list archive)
State Accepted
Headers show

Commit Message

Rasmus Villemoes March 8, 2016, 9:26 p.m. UTC
cmm_mem_going_offline is (only) called from cmm_memory_cb(), which
sends the return value through notifier_from_errno(). The latter
expects 0 or -errno (notifier_to_errno(notifier_from_errno(x)) is 0
for any x >= 0, so passing a positive value cannot make sense). Hence
negate ENOMEM.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
 arch/powerpc/platforms/pseries/cmm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Michael Ellerman July 5, 2016, 2:10 p.m. UTC | #1
On Tue, 2016-08-03 at 21:26:17 UTC, Rasmus Villemoes wrote:
> cmm_mem_going_offline is (only) called from cmm_memory_cb(), which
> sends the return value through notifier_from_errno(). The latter
> expects 0 or -errno (notifier_to_errno(notifier_from_errno(x)) is 0
> for any x >= 0, so passing a positive value cannot make sense). Hence
> negate ENOMEM.
> 
> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/e2be23712a9c8e3710c9e2684a

cheers
diff mbox

Patch

diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index fc44ad0475f8..66e7227469b8 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -574,7 +574,7 @@  static int cmm_mem_going_offline(void *arg)
 				cmm_dbg("Failed to allocate memory for list "
 						"management. Memory hotplug "
 						"failed.\n");
-				return ENOMEM;
+				return -ENOMEM;
 			}
 			memcpy(npa, pa_curr, PAGE_SIZE);
 			if (pa_curr == cmm_page_list)