linux-kernel - [PATCH 3.2 036/152] MIPS: RM7000: Double locking bug in rm7k_tc

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Date:   Mon, 14 Nov 2016 00:14:07 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, kernel-janitors@...r.kernel.org,
        linux-mips@...ux-mips.org, "Ralf Baechle" <ralf@...ux-mips.org>,
        "Dan Carpenter" <dan.carpenter@...cle.com>
Subject: [PATCH 3.2 036/152] MIPS: RM7000: Double locking bug in
 rm7k_tc_disable()

3.2.84-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 58a7e1c140f3ad61646bc0cd9a1f6a9cafc0b225 upstream.

We obviously intended to enable IRQs again at the end.

Fixes: 745aef5df1e2 ('MIPS: RM7000: Add support for tertiary cache')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
Cc: kernel-janitors@...r.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13815/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/mips/mm/sc-rm7k.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/mips/mm/sc-rm7k.c
+++ b/arch/mips/mm/sc-rm7k.c
@@ -162,7 +162,7 @@ static void rm7k_tc_disable(void)
 	local_irq_save(flags);
 	blast_rm7k_tcache();
 	clear_c0_config(RM7K_CONF_TE);
-	local_irq_save(flags);
+	local_irq_restore(flags);
 }
 
 static void rm7k_sc_disable(void)