Re: [PATCH] staging: fbtft: replace udelay with usleep_range

[Andy Shevchenko]

On Thu, Jan 15, 2026 at 05:40:19PM +0900, WooYoung Jeon wrote:
> In the fb_ra8875 driver, udelay(100) is used for delay which
> causes busy-waiting. Replacing it with usleep_range(100, 120)
> allows the CPU to sleep during the delay, improving system
> resource efficiency.
> 
> This change was suggested by checkpatch.pl.

Without HW test it's no go. See the previous attempts to "fix" the same place
over and over. (https://lore.kernel.org/ is at your service to dive into mail
archives)

-- 
With Best Regards,
Andy Shevchenko