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SubjectRe: [PATCH v6,4/4] drivers: misc: new driver sram_uapi for user level SRAM access
On Sat, Apr 18, 2020 at 6:22 PM Wang Wenhu <wenhu.wang@vivo.com> wrote:
> +#define DRIVER_NAME "sram_uapi"
> +
> +#define SRAM_UAPI_IOCTL_SET_SRAM_TYPE 0
> +#define SRAM_UAPI_IOCTL_ALLOC 1
> +#define SRAM_UAPI_IOCTL_FREE 2
> +
> +struct res_info {
> + u32 offset;
> + u32 size;
> +};

This is of course not a proper ioctl interface at all, please see
Documentation/driver-api/ioctl.rst for how to define the numbers
in a uapi header file.

The offset/size arguments should probably be 64 bit wide.

Arnd

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