Synchronize upper_NN_bits() and lower_NN_bits() macros with Linux 6.16.7
commit 118d777c4cb4 ("wordpart.h: Add REPEAT_BYTE_U32()"). This fixes the
lower_32_bits() macros and assures it works with 64bit systems correctly.
This also adds 16bit variants of these macros, which will be used by the
Airoha PHY driver.Signed-off-by: Marek Vasut <[email protected]> --- Cc: "Lucien.Jheng" <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Raymond Mao <[email protected]> Cc: Tom Rini <[email protected]> Cc: [email protected] --- include/linux/kernel.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e0443ecac84..44a639a5e4e 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -111,7 +111,19 @@ * lower_32_bits - return bits 0-31 of a number * @n: the number we're accessing */ -#define lower_32_bits(n) ((u32)(n)) +#define lower_32_bits(n) ((u32)((n) & 0xffffffff)) + +/** + * upper_16_bits - return bits 16-31 of a number + * @n: the number we're accessing + */ +#define upper_16_bits(n) ((u16)((n) >> 16)) + +/** + * lower_16_bits - return bits 0-15 of a number + * @n: the number we're accessing + */ +#define lower_16_bits(n) ((u16)((n) & 0xffff)) /* * abs() handles unsigned and signed longs, ints, shorts and chars. For all -- 2.51.0
