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>

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);