Re: [PATCH] spi: use is_power_of_2 instead of hweight32 in spi_nor_write()

On Fri, Mar 13, 2020 at 5:37 AM Rasmus Villemoes rasmus.villemoes@prevas.dk wrote:

hweight32 is a somewhat expensive way to check for power-of-2. Use the is_power_of_2 helper, which does the standard and cheap idiom foo&(foo-1)==0.

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-96 (-96) Function old new delta spi_nor_write 388 292 -96

Signed-off-by: Rasmus Villemoes rasmus.villemoes@prevas.dk

Applied to u-boot-spi/master