From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 1 May 2012 22:37:16 +0000 (-0400)
Subject: ia64: can't reach do_signal() when returning to kernel mode
X-Git-Tag: v3.7-rc1~43^2~22
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=cf880248c56495a5e616cde226d7c85972a3218c;p=~emulex%2Finfiniband.git

ia64: can't reach do_signal() when returning to kernel mode

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index a199be1fe61..19f89c09d40 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -437,14 +437,6 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
 	long restart = in_syscall;
 	long errno = scr->pt.r8;
 
-	/*
-	 * In the ia64_leave_kernel code path, we want the common case to go fast, which
-	 * is why we may in certain cases get here from kernel mode. Just return without
-	 * doing anything if so.
-	 */
-	if (!user_mode(&scr->pt))
-		return;
-
 	/*
 	 * This only loops in the rare cases of handle_signal() failing, in which case we
 	 * need to push through a forced SIGSEGV.