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i3c: document i3c_xfers

i3c_xfers was left undocumented, document it.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://patch.msgid.link/20251202153804.2640623-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

+5 -1
+5 -1
include/linux/i3c/master.h
··· 418 418 * @send_ccc_cmd: send a CCC command 419 419 * This method is mandatory. 420 420 * @priv_xfers: do one or several private I3C SDR transfers 421 - * This method is mandatory. 421 + * This method is mandatory when i3c_xfers is not implemented. It 422 + * is deprecated. 423 + * @i3c_xfers: do one or several I3C SDR or HDR transfers 424 + * This method is mandatory when priv_xfers is not implemented but 425 + * should be implemented instead of priv_xfers. 422 426 * @attach_i2c_dev: called every time an I2C device is attached to the bus. 423 427 * This is a good place to attach master controller specific 424 428 * data to I2C devices.