On Sun, Jan 04, 2026 at 07:06:38PM +0800, Sun Jian wrote:
> Clang reports a large stack frame in init_display()
> (-Wframe-larger-than=1024) due to the very large
> write_reg(MIPI_DCS_WRITE_LUT, ...) call.
>
> Send MIPI_DCS_WRITE_LUT followed by the LUT payload using
> fbtft_write_buf_dc() to avoid the varargs/NUMARGS stack blow-up.
>
> No functional change intended.
...
> +static const u8 lut[] = {
> + 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24,
> 26, 28, 30,
> + 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56,
> 58, 60, 62,
> + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
> 13, 14, 15,
> + 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
> 29, 30, 31,
> + 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
> 45, 46, 47,
> + 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
> 61, 62, 63,
> + 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24,
> 26, 28, 30,
> + 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56,
> 58, 60, 62,
> + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
> 13, 14, 15,
> + 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
> 29, 30, 31,
> + 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
> 45, 46, 47,
> + 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
> 61, 62, 63,
Two tabs too many on each line.
> + };
> +
--
With Best Regards,
Andy Shevchenko
