On Wed, Dec 18, 2024 at 12:35:41PM +0800, Carlos Song wrote: > Return -EPROBE_DEFER when dma_request_slave_channel() because DMA driver > have not ready yet. > > Move i2c_imx_dma_request() before registering I2C adapter to avoid > infinite loop of .probe() calls to the same driver, see "e8c220fac415 > Revert "i2c: imx: improve the error handling in i2c_imx_dma_request()"" > and "Documentation/driver-api/driver-model/driver.rst". > > Use CPU mode to avoid stuck registering i2c adapter when DMA resources > are unavailable. > > Signed-off-by: Carlos Song <carlos.song@xxxxxxx> > Signed-off-by: Clark Wang <xiaoning.wang@xxxxxxx> > Acked-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> Acked-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> Thank you! -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
