Dasgupta, Romit had written, on 12/31/2009 07:29 AM, the following:
Cleaner way to take care of the precision loss during integer division.
please sign-off your patch and fix subject.
diff --git a/arch/arm/plat-omap/opp_twl_tps.c b/arch/arm/plat-omap/opp_twl_tps.c
index e0db39b..43dee2d 100644
--- a/arch/arm/plat-omap/opp_twl_tps.c
+++ b/arch/arm/plat-omap/opp_twl_tps.c
@@ -36,14 +36,7 @@ unsigned long omap_twl_vsel_to_uv(const u8 vsel)
*/
u8 omap_twl_uv_to_vsel(unsigned long uv)
{
- u8 vsel;
+ /* Takes care of precision loss due to integer division */
+ return (((uv + 99) / 100 - 6000) + 124) / 125;
- vsel = ((uv / 100) - 6000) / 125;
-
- /* round off to higher voltage */
- /* XXX Surely not the best way to handle this. */
- if (uv > omap_twl_vsel_to_uv(vsel))
- vsel++;
-
- return vsel;
}
Nice, thanks.
Acked-by: Nishanth Menon <nm@xxxxxx>
--
Regards,
Nishanth Menon
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