netdev - [PATCH 32/50] wireless: ath: carl9170: spin

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1373533573-12272-33-git-send-email-ming.lei@canonical.com>
Date:	Thu, 11 Jul 2013 17:05:55 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-usb@...r.kernel.org, Oliver Neukum <oliver@...kum.org>,
	Alan Stern <stern@...land.harvard.edu>,
	linux-input@...r.kernel.org, linux-bluetooth@...r.kernel.org,
	netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
	linux-media@...r.kernel.org, alsa-devel@...a-project.org,
	Ming Lei <ming.lei@...onical.com>,
	Christian Lamparter <chunkeey@...glemail.com>,
	"John W. Linville" <linville@...driver.com>
Subject: [PATCH 32/50] wireless: ath: carl9170: spin_lock in complete() cleanup

Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().

Cc: Christian Lamparter <chunkeey@...glemail.com>
Cc: "John W. Linville" <linville@...driver.com>
Cc: linux-wireless@...r.kernel.org
Cc: netdev@...r.kernel.org
Signed-off-by: Ming Lei <ming.lei@...onical.com>
---
 drivers/net/wireless/ath/carl9170/rx.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c
index 4684dd9..61f62a6 100644
--- a/drivers/net/wireless/ath/carl9170/rx.c
+++ b/drivers/net/wireless/ath/carl9170/rx.c
@@ -129,6 +129,7 @@ static int carl9170_check_sequence(struct ar9170 *ar, unsigned int seq)
 
 static void carl9170_cmd_callback(struct ar9170 *ar, u32 len, void *buffer)
 {
+	unsigned long flags;
 	/*
 	 * Some commands may have a variable response length
 	 * and we cannot predict the correct length in advance.
@@ -148,7 +149,7 @@ static void carl9170_cmd_callback(struct ar9170 *ar, u32 len, void *buffer)
 		carl9170_restart(ar, CARL9170_RR_INVALID_RSP);
 	}
 
-	spin_lock(&ar->cmd_lock);
+	spin_lock_irqsave(&ar->cmd_lock, flags);
 	if (ar->readbuf) {
 		if (len >= 4)
 			memcpy(ar->readbuf, buffer + 4, len - 4);
@@ -156,7 +157,7 @@ static void carl9170_cmd_callback(struct ar9170 *ar, u32 len, void *buffer)
 		ar->readbuf = NULL;
 	}
 	complete(&ar->cmd_wait);
-	spin_unlock(&ar->cmd_lock);
+	spin_unlock_irqrestore(&ar->cmd_lock, flags);
 }
 
 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len)
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html