| Message ID | 20200506151429.12255-3-kishon@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add PCIe support to TI's J721E SoC | expand |
On Wed, 6 May 2020 20:44:17 +0530, Kishon Vijay Abraham I wrote: > Add a macro for aligning down a pointer. This is useful to get an > aligned register address when a device allows only word access and > doesn't allow half word or byte access. > > Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> > --- > include/linux/kernel.h | 1 + > 1 file changed, 1 insertion(+) > Acked-by: Rob Herring <robh@kernel.org>
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 9b7a8d74a9d6..c3b361b5be54 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -34,6 +34,7 @@ #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a)) #define __ALIGN_MASK(x, mask) __ALIGN_KERNEL_MASK((x), (mask)) #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) +#define PTR_ALIGN_DOWN(p, a) ((typeof(p))ALIGN_DOWN((unsigned long)(p), (a))) #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) /* generic data direction definitions */
Add a macro for aligning down a pointer. This is useful to get an aligned register address when a device allows only word access and doesn't allow half word or byte access. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- include/linux/kernel.h | 1 + 1 file changed, 1 insertion(+)