firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng
When Marvell's rWTM firmware, which does not support the GET_RANDOM command, is used, kernel prints an error message hwrng: no data available every 10 seconds. Fail probing of this driver if the rWTM firmware does not support the GET_RANDOM command. Fixes: 389711b3 ("firmware: Add Turris Mox rWTM firmware driver") Signed-off-by: NPali Rohár <pali@kernel.org> Signed-off-by: NMarek Behún <kabel@kernel.org> Reviewed-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGregory CLEMENT <gregory.clement@bootlin.com>
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