From 69916d96094e1e16567c5f25515a13ed2896c730 Mon Sep 17 00:00:00 2001 From: Ray Jui Date: Mon, 29 Jun 2015 14:30:10 -0700 Subject: clk: iproc: fix bit manipulation arithmetic A 32-bit variable should be type casted to 64-bit before arithmetic operation and assigning it to a 64-bit variable Reported-by: Dan Carpenter Signed-off-by: Ray Jui Fixes: 5fe225c105fd ("clk: iproc: add initial common clock support") Signed-off-by: Stephen Boyd --- drivers/clk/bcm/clk-iproc-pll.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/clk/bcm/clk-iproc-pll.c b/drivers/clk/bcm/clk-iproc-pll.c index a8d971b..2dda4e8 100644 --- a/drivers/clk/bcm/clk-iproc-pll.c +++ b/drivers/clk/bcm/clk-iproc-pll.c @@ -366,7 +366,7 @@ static unsigned long iproc_pll_recalc_rate(struct clk_hw *hw, val = readl(pll->pll_base + ctrl->ndiv_int.offset); ndiv_int = (val >> ctrl->ndiv_int.shift) & bit_mask(ctrl->ndiv_int.width); - ndiv = ndiv_int << ctrl->ndiv_int.shift; + ndiv = (u64)ndiv_int << ctrl->ndiv_int.shift; if (ctrl->flags & IPROC_CLK_PLL_HAS_NDIV_FRAC) { val = readl(pll->pll_base + ctrl->ndiv_frac.offset); @@ -374,7 +374,8 @@ static unsigned long iproc_pll_recalc_rate(struct clk_hw *hw, bit_mask(ctrl->ndiv_frac.width); if (ndiv_frac != 0) - ndiv = (ndiv_int << ctrl->ndiv_int.shift) | ndiv_frac; + ndiv = ((u64)ndiv_int << ctrl->ndiv_int.shift) | + ndiv_frac; } val = readl(pll->pll_base + ctrl->pdiv.offset); -- cgit v1.1