The sd.c SD card emulation code can be in a state where the
SDState BlockBackend pointer is NULL; this is treated as
"card not present". Add a missing check to sd_get_inserted()
so that we don't segfault in this situation.
(This could be provoked by the guest writing to the SDHCI
register to do a reset on a xilinx-zynq-a9 board; it will
also happen at startup when sdhci implements its DeviceClass
reset method.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id:
1456493044-10025-2-git-send-email-peter.maydell@linaro.org
static bool sd_get_inserted(SDState *sd)
{
- return blk_is_inserted(sd->blk);
+ return sd->blk && blk_is_inserted(sd->blk);
}
static bool sd_get_readonly(SDState *sd)