Re: [PATCH v2] staging: fbtft: fb_ra8875: replace udelays with fsleep

[Jose A. Perez de Azpillaga]

Hi Andy,

write_reg8_bus8() calls par->fbtftops.write(), which in this driver
resolves to write_spi(), which calls spi_sync(). Since spi_sync()
requires sleepable context, write_reg8_bus8() is transitively guaranteed
to run in non-atomic context, making fsleep() safe to use.

Best regards, Jose