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a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Listing individual machines in qcom_scm_qseecom_allowlist doesn't scale. Allow it to function as allow and disallow list at the same time by the means of the match->data and list the SoC families instead of devices. In case a particular device has buggy or incompatible firmware user still can disable QSEECOM by specifying qcom_scm.qseecom=3Doff kernel param and (in the longer term) adding machine-specific entry to the qcom_scm_qseecom_allowlist table. Signed-off-by: Dmitry Baryshkov --- drivers/firmware/qcom/qcom_scm.c | 37 ++++++++++++++++++++----------------- 1 file changed, 20 insertions(+), 17 deletions(-) diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_= scm.c index 9fed03d0a4b7e5709edf2db9a58b5326301008b4..6f70fbb0ddfbf88542ff2b3ed2b= c372c2f3ce9eb 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -1743,28 +1743,23 @@ module_param(qseecom, charp, 0); =20 /* * We do not yet support re-entrant calls via the qseecom interface. To pr= event - * any potential issues with this, only allow validated machines for now. = Users + * any potential issues with this, only allow validated platforms for now.= Users * still can manually enable or disable it via the qcom_scm.qseecom modpar= am. + * + * To disable QSEECOM for a particular machine, add compatible entry and s= et + * data to (void *)false. */ static const struct of_device_id qcom_scm_qseecom_allowlist[] __maybe_unus= ed =3D { - { .compatible =3D "dell,xps13-9345" }, - { .compatible =3D "lenovo,flex-5g" }, - { .compatible =3D "lenovo,thinkpad-t14s" }, - { .compatible =3D "lenovo,thinkpad-x13s", }, - { .compatible =3D "lenovo,yoga-slim7x" }, - { .compatible =3D "microsoft,arcata", }, - { .compatible =3D "microsoft,romulus13", }, - { .compatible =3D "microsoft,romulus15", }, - { .compatible =3D "qcom,sc8180x-primus" }, - { .compatible =3D "qcom,x1e80100-crd" }, - { .compatible =3D "qcom,x1e80100-qcp" }, + { .compatible =3D "qcom,sc8180x", .data =3D (void *)true }, + { .compatible =3D "qcom,sc8280xp", .data =3D (void *)true }, + { .compatible =3D "qcom,x1e80100", .data =3D (void *)true }, { } }; =20 static bool qcom_scm_qseecom_machine_is_allowed(struct device *scm_dev) { struct device_node *np; - bool match; + const struct of_device_id *match; =20 if (!strcmp(qseecom, "off")) { dev_info(scm_dev, "qseecom: disabled by modparam\n"); @@ -1783,7 +1778,17 @@ static bool qcom_scm_qseecom_machine_is_allowed(stru= ct device *scm_dev) match =3D of_match_node(qcom_scm_qseecom_allowlist, np); of_node_put(np); =20 - return match; + if (!match) { + dev_info(scm_dev, "qseecom: untested machine, skipping\n"); + return false; + } + + if (!match->data) { + dev_info(scm_dev, "qseecom: disabled by the allowlist\n"); + return false; + } + + return true; } =20 static void qcom_scm_qseecom_free(void *data) @@ -1817,10 +1822,8 @@ static int qcom_scm_qseecom_init(struct qcom_scm *sc= m) =20 dev_info(scm->dev, "qseecom: found qseecom with version 0x%x\n", version); =20 - if (!qcom_scm_qseecom_machine_is_allowed(scm->dev)) { - dev_info(scm->dev, "qseecom: untested machine, skipping\n"); + if (!qcom_scm_qseecom_machine_is_allowed(scm->dev)) return 0; - } =20 /* * Set up QSEECOM interface device. All application clients will be --=20 2.39.5