From 495d5f41a6161dffafe61ac458459c62d440344a Mon Sep 17 00:00:00 2001 From: "D. Manresa" Date: Fri, 2 Oct 2026 09:33:43 -0700 Subject: [PATCH] mfd: intel-lpss: Add Dell Latitude 7275 to the resource conflict quirk The Dell Latitude 7275 2-in-1 has the same BIOS bug as the Latitude 5285: the ACPI GEXP device declares an OperationRegion (BAR0) on the GNVS variable SB04 and the I2C4 controller (INT3446) builds its _CRS from that same variable, so intel_lpss_acpi fails to bind the controller with -EBUSY and the front camera sensor (OV5670, INT3479) is never registered unless acpi_enforce_resources=lax is passed. Add the machine to the DMI table so QUIRK_IGNORE_RESOURCE_CONFLICTS is applied to INT3446 on it as well. Assisted-by: LLM Reviewed-by: Hans de Goede Reviewed-by: Sakari Ailus Reviewed-by: Andy Shevchenko Signed-off-by: D. Manresa Signed-off-by: Thierry Chatard Link: https://patch.msgid.link/20261002163350.1248431-3-tchatard@gmail.com Signed-off-by: Lee Jones --- drivers/mfd/intel-lpss-acpi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c index 3f90942f3b36..720adb0ee21f 100644 --- a/drivers/mfd/intel-lpss-acpi.c +++ b/drivers/mfd/intel-lpss-acpi.c @@ -191,6 +191,12 @@ static const struct dmi_system_id intel_lpss_quirk_dmi[] = { DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Latitude 5285"), }, }, + { + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Latitude 7275"), + }, + }, { } };