linux-kernel - [PATCH 4.5 26/88] clk: xgene: Add missing parenthesis when clearing divider value

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Message-Id: <20160509071953.431671664@linuxfoundation.org>
Date:	Mon,  9 May 2016 09:21:15 +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, Loc Ho <lho@....com>,
	Toan Le <toanle@....com>, Stephen Boyd <sboyd@...eaurora.org>
Subject: [PATCH 4.5 26/88] clk: xgene: Add missing parenthesis when clearing divider value

4.5-stable review patch.  If anyone has any objections, please let me know.

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

From: Loc Ho <lho@....com>

commit 0f4c7a138dfefb0ebdbaf56e3ba2acd2958a6605 upstream.

In the initial fix for non-zero divider shift value, the parenthesis
was missing after the negate operation. This patch adds the required
parenthesis. Otherwise, lower bits may be cleared unintentionally.

Signed-off-by: Loc Ho <lho@....com>
Acked-by: Toan Le <toanle@....com>
Fixes: 1382ea631ddd ("clk: xgene: Fix divider with non-zero shift value")
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/clk/clk-xgene.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/clk/clk-xgene.c
+++ b/drivers/clk/clk-xgene.c
@@ -351,8 +351,8 @@ static int xgene_clk_set_rate(struct clk
 		/* Set new divider */
 		data = xgene_clk_read(pclk->param.divider_reg +
 				pclk->param.reg_divider_offset);
-		data &= ~((1 << pclk->param.reg_divider_width) - 1)
-				<< pclk->param.reg_divider_shift;
+		data &= ~(((1 << pclk->param.reg_divider_width) - 1)
+				<< pclk->param.reg_divider_shift);
 		data |= divider;
 		xgene_clk_write(data, pclk->param.divider_reg +
 					pclk->param.reg_divider_offset);