[PATCH 3.13.y-ckt 142/156] sparc: semtimedop() unreachable due to comparison error

From: Kamal Mostafa
Date: Tue Apr 07 2015 - 18:53:40 EST

3.13.11-ckt19 -stable review patch. If anyone has any objections, please let me know.


From: Rob Gardner <rob.gardner@xxxxxxxxxx>

[ Upstream commit 53eb2516972b8c4628651dfcb926cb9ef8b2864a ]

A bug was reported that the semtimedop() system call was always
failing eith ENOSYS.

Since SEMCTL is defined as 3, and SEMTIMEDOP is defined as 4,
the comparison "call <= SEMCTL" will always prevent SEMTIMEDOP
from getting through to the semaphore ops switch statement.

This is corrected by changing the comparison to "call <= SEMTIMEDOP".

Orabug: 20633375

Signed-off-by: Rob Gardner <rob.gardner@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
arch/sparc/kernel/sys_sparc_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index beb0b5a..25db14a 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -332,7 +332,7 @@ SYSCALL_DEFINE6(sparc_ipc, unsigned int, call, int, first, unsigned long, second
long err;

/* No need for backward compatibility. We can start fresh... */
- if (call <= SEMCTL) {
+ if (call <= SEMTIMEDOP) {
switch (call) {
case SEMOP:
err = sys_semtimedop(first, ptr,

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