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    Subject[PATCH v6 07/14] platform/x86: dell-smbios: only run if proper oem string is detected
    Date
    The proper way to indicate that a system is a 'supported' Dell System
    is by the presence of this string in OEM strings.

    Allowing the driver to load on non-Dell systems will have undefined
    results.

    Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
    ---
    drivers/platform/x86/dell-smbios.c | 7 +++++++
    1 file changed, 7 insertions(+)

    diff --git a/drivers/platform/x86/dell-smbios.c b/drivers/platform/x86/dell-smbios.c
    index e9b1ca07c872..7e779278d054 100644
    --- a/drivers/platform/x86/dell-smbios.c
    +++ b/drivers/platform/x86/dell-smbios.c
    @@ -172,8 +172,15 @@ static void __init find_tokens(const struct dmi_header *dm, void *dummy)

    static int __init dell_smbios_init(void)
    {
    + const struct dmi_device *valid;
    int ret;

    + valid = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, "Dell System", NULL);
    + if (!valid) {
    + pr_err("Unable to run on non-Dell system\n");
    + return -ENODEV;
    + }
    +
    dmi_walk(find_tokens, NULL);

    if (!da_tokens) {
    --
    2.14.1
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