181563be43
Rather than looking up a dummy item from SMEM, use the new qcom_smem_is_available() function to make the code more clear (and reduce the overhead slightly). Add the same check to qcom_smd_register_edge() as well to ensure that it only succeeds if SMEM is already available - if a driver calls the function and SMEM is not available yet then the initial state will be read incorrectly and the RPMSG devices might never become available. Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20230531-rpm-rproc-v3-8-a07dcdefd918@gerhold.net Signed-off-by: Bjorn Andersson <andersson@kernel.org>