linux-kernel - [PATCH 4.4 031/312] MIPS: RM7000: Double locking bug in rm7k_tc

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Message-Id: <20200508123126.677472805@linuxfoundation.org>
Date:   Fri,  8 May 2020 14:30:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        linux-mips@...ux-mips.org, kernel-janitors@...r.kernel.org,
        Ralf Baechle <ralf@...ux-mips.org>
Subject: [PATCH 4.4 031/312] MIPS: RM7000: Double locking bug in rm7k_tc_disable()

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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 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
@@ -161,7 +161,7 @@ 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)