SWITCH_FUNCTION is only allowed in TRANSFER state (See 4.8 "Card State Transition Table).
Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org> --- hw/sd/sd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index fce99d655d..3b885ba8a0 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1196,6 +1196,10 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req) if (sd->mode != sd_data_transfer_mode) { return sd_invalid_mode_for_cmd(sd, req); } + if (sd->state != sd_transfer_state) { + return sd_invalid_state_for_cmd(sd, req); + } + sd_function_switch(sd, req.arg); sd->state = sd_sendingdata_state; sd->data_start = 0; -- 2.41.0