staging: vchiq_2835_arm: revert "quit using custom down_interruptible()"

commit 061ca1401f96c254e7f179bf97a1fc5c7f47e1e1 upstream.

The killable version of down() is meant to be used on situations where
it should not fail at all costs, but still have the convenience of being
able to kill it if really necessary. VCHIQ doesn't fit this criteria, as
it's mainly used as an interface to V4L2 and ALSA devices.

Fixes: ff5979ad8636 ("staging: vchiq_2835_arm: quit using custom down_interruptible()")
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index a9cc01e8e6c58bc80fa298504b2ea67ea6cc25e2..833b28e9ba4bc35638014481f38c18aaa03ef6e5 100644 (file)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -553,7 +553,7 @@ create_pagelist(char __user *buf, size_t count, unsigned short type)
                (g_cache_line_size - 1)))) {
                char *fragments;
 
-               if (down_killable(&g_free_fragments_sema)) {
+               if (down_interruptible(&g_free_fragments_sema) != 0) {
                        cleanup_pagelistinfo(pagelistinfo);
                        return NULL;
                }