diff options
| author | Ray Jui <rjui@broadcom.com> | 2015-06-29 14:30:10 -0700 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2015-07-02 09:51:09 -0700 |
| commit | 69916d96094e1e16567c5f25515a13ed2896c730 (patch) | |
| tree | 7b756558d35f725dc8dd31c95c6edd383f07f908 /drivers/clk | |
| parent | 45a481c2176f6acca2efb6477c6018b2c3e3c60f (diff) | |
| download | linux-69916d96094e1e16567c5f25515a13ed2896c730.tar.bz2 | |
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 <dan.carpenter@oracle.com>
Signed-off-by: Ray Jui <rjui@broadcom.com>
Fixes: 5fe225c105fd ("clk: iproc: add initial common clock support")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/bcm/clk-iproc-pll.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/clk/bcm/clk-iproc-pll.c b/drivers/clk/bcm/clk-iproc-pll.c index a8d971b820b0..2dda4e8295a9 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); |