Carlo Caione 7a9bc330df firmware: meson-sm: Allow 0 as valid return value ... Some special SMC calls (i.e. the function used to retrieve the serial number of the Amlogic SoCs) returns 0 in the register 0 also when the data was successfully read instead of using the register to hold the number of bytes returned in the bounce buffer as expected. With the current implementation of the driver this is seen as an error and meson_sm_call_read() returns an error even though the data was correctly read. To deal with this when we have no information about the amount of read data (that is 0 is returned by the SMC call) we return to the caller the requested amount of data and 0 as return value. Signed-off-by: Carlo Caione <carlo@endlessm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>		2017-03-23 12:22:40 -07:00
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meson_sm.c	firmware: meson-sm: Allow 0 as valid return value	2017-03-23 12:22:40 -07:00