Re: [U-Boot] [PATCH 37/69] x86: Allow I/O functions to use pointers

On Mon, Mar 7, 2016 at 10:28 AM, Simon Glass sjg@chromium.org wrote:

It is common with memory-mapped I/O to use the address of a structure member to access memory, as in:

struct some_regs { u32 ctrl; u32 data; }

struct some_regs *regs = (struct some_regs *)BASE_ADDRESS;

writel(1, &reg->ctrl); writel(2, &reg->data);

This does not currently work with inl(), outl(), etc. Add a cast to permit this.

Signed-off-by: Simon Glass sjg@chromium.org

arch/x86/include/asm/io.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)

Reviewed-by: Bin Meng bmeng.cn@gmail.com