Commit ffceca8c authored Oct 08, 2014 by Tapasweni Pathak Committed by Greg Kroah-Hartman Oct 20, 2014

staging: iio: adc: use DIV_ROUND_UP



The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.

Coccinelle script used :

// <smpl>
@haskernel@
@@
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>

Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 97996da1

drivers/staging/iio/adc/spear_adc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -98,7 +98,7 @@ static void spear_adc_set_clk(struct spear_adc_state *st, u32 val)
		u32 clk_high, clk_low, count;
		u32 apb_clk = clk_get_rate(st->clk);

		count = (apb_clk + val - 1) / val;
		count = DIV_ROUND_UP(apb_clk, val);
		clk_low = count / 2;
		clk_high = count - clk_low;
		st->current_clk = apb_clk / count;