diff options
| author | Michael Walle <michael@walle.cc> | 2021-03-06 02:45:52 +0300 |
|---|---|---|
| committer | Tudor Ambarus <tudor.ambarus@microchip.com> | 2021-03-08 09:17:39 +0300 |
| commit | 04fc298c7d0877695847e8662d1b5b29a19c2723 (patch) | |
| tree | b70a94043723d2fb2151037fdca69331122c34eb /drivers/mtd | |
| parent | ff013330fbdb2782e9001787db6c0b6415cdad77 (diff) | |
| download | linux-04fc298c7d0877695847e8662d1b5b29a19c2723.tar.xz | |
mtd: spi-nor: use is_power_of_2()
There is already a function to check if an integer is a power of 2. Use
it.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20210305234552.19204-1-michael@walle.cc
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/core.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index 0522304f52fa..4a315cb1c4db 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -2336,11 +2336,8 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len, * If page_size is a power of two, the offset can be quickly * calculated with an AND operation. On the other cases we * need to do a modulus operation (more expensive). - * Power of two numbers have only one bit set and we can use - * the instruction hweight32 to detect if we need to do a - * modulus (do_div()) or not. */ - if (hweight32(nor->page_size) == 1) { + if (is_power_of_2(nor->page_size)) { page_offset = addr & (nor->page_size - 1); } else { uint64_t aux = addr; |