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Date: Wed, 1 Nov 2017 14:25:29 -0500 From: Mario Limonciello <mario.limonciello@...l.com> To: dvhart@...radead.org, Andy Shevchenko <andy.shevchenko@...il.com> Cc: LKML <linux-kernel@...r.kernel.org>, platform-driver-x86@...r.kernel.org, Andy Lutomirski <luto@...nel.org>, quasisec@...gle.com, pali.rohar@...il.com, rjw@...ysocki.net, mjg59@...gle.com, hch@....de, Greg KH <greg@...ah.com>, Alan Cox <gnomes@...rguk.ukuu.org.uk>, Mario Limonciello <mario.limonciello@...l.com> Subject: [PATCH v12 08/16] platform/x86: dell-smbios: only run if proper oem string is detected 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@...l.com> Reviewed-by: Edward O'Callaghan <quasisec@...gle.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 ffc174638aa4..12a3eb153911 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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