From: Johan Hovold <johan@hovoldconsulting.com>
Date: Thu, 12 Feb 2015 03:22:47 +0000 (+0800)
Subject: greybus: connection: fix non-atomic allocations under spin lock
X-Git-Tag: v4.9-rc1~119^2~378^2~21^2~1697
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=067f3b6bfaa132269756e4e6d0c61360f8d6a4b5;p=karo-tx-linux.git

greybus: connection: fix non-atomic allocations under spin lock

Use GFP_ATOMIC for IDA memory allocations under spin lock, which must
not sleep.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
---

diff --git a/drivers/staging/greybus/connection.c b/drivers/staging/greybus/connection.c
index c805022c50bc..5f60e83aa37c 100644
--- a/drivers/staging/greybus/connection.c
+++ b/drivers/staging/greybus/connection.c
@@ -63,7 +63,7 @@ static bool gb_connection_hd_cport_id_alloc(struct gb_connection *connection)
 	int id;
 
 	spin_lock_irq(&gb_connections_lock);
-	id = ida_simple_get(ida, 0, HOST_DEV_CPORT_ID_MAX, GFP_KERNEL);
+	id = ida_simple_get(ida, 0, HOST_DEV_CPORT_ID_MAX, GFP_ATOMIC);
 	spin_unlock_irq(&gb_connections_lock);
 	if (id < 0)
 		return false;