linux-kernel - [PATCH 4.4 017/192] [PATCH 017/135] clk: xgene: Fix divider with non-zero shift value

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Date:   Mon, 12 Sep 2016 18:58:46 +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>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.4 017/192] [PATCH 017/135] clk: xgene: Fix divider with non-zero shift value

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

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

[ Upstream commit 1382ea631ddddb634850a3795527db0feeff5aaf ]

The X-Gene clock driver missed the divider shift operation when
set the divider value.

Signed-off-by: Loc Ho <lho@....com>
Fixes: 308964caeebc ("clk: Add APM X-Gene SoC clock driver")
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/clk/clk-xgene.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/clk/clk-xgene.c
+++ b/drivers/clk/clk-xgene.c
@@ -351,7 +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);
+		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);