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video: ipu_common: fix build error

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Some toolchains fail to build
"clk->rate = (u64)(clk->parent->rate * 16) / div;"
And the cast usage is wrong.

Use the following code to fix the issue,
"
  do_div(parent_rate, div);
  clk->rate = parent_rate;
"

Reported-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
This commit is contained in:
Peng Fan 2016-04-28 10:07:53 +08:00 committed by Stefano Babic
parent e25b369c04
commit c510f2e436
1 changed files with 3 additions and 1 deletions
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4
drivers/video/ipu_common.c
View file

@ -352,7 +352,9 @@ static int ipu_pixel_clk_set_rate(struct clk *clk, unsigned long rate)
*/
__raw_writel((div / 16) << 16, DI_BS_CLKGEN1(clk->id));
clk->rate = (u64)(clk->parent->rate * 16) / div;
do_div(parent_rate, div);
clk->rate = parent_rate;
return 0;
}