linux-kernel - [PATCH] usb: typec: ucsi: huawei-gaokin: add DRM dependency

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Message-Id: <20251204101111.1035975-1-arnd@kernel.org>
Date: Thu,  4 Dec 2025 11:11:07 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Pengyu Luo <mitltlatltl@...il.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
	Pavan Holla <pholla@...omium.org>,
	Yue Haibing <yuehaibing@...wei.com>,
	Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] usb: typec: ucsi: huawei-gaokin: add DRM dependency

From: Arnd Bergmann <arnd@...db.de>

Selecting DRM_AUX_HPD_BRIDGE is not possible from a built-in driver when
CONFIG_DRM=m:

WARNING: unmet direct dependencies detected for DRM_AUX_HPD_BRIDGE
  Depends on [m]: HAS_IOMEM [=y] && DRM [=m] && DRM_BRIDGE [=y] && OF [=y]
  Selected by [y]:
  - UCSI_HUAWEI_GAOKUN [=y] && USB_SUPPORT [=y] && TYPEC [=y] && TYPEC_UCSI [=y] && EC_HUAWEI_GAOKUN [=y] && DRM_BRIDGE [=y] && OF [=y]

Add the same dependency we have in similar drivers to work around this.

Fixes: 00327d7f2c8c ("usb: typec: ucsi: add Huawei Matebook E Go ucsi driver")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/usb/typec/ucsi/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/typec/ucsi/Kconfig b/drivers/usb/typec/ucsi/Kconfig
index 7fcb1e1de5d6..b812be4d0e67 100644
--- a/drivers/usb/typec/ucsi/Kconfig
+++ b/drivers/usb/typec/ucsi/Kconfig
@@ -96,6 +96,7 @@ config UCSI_LENOVO_YOGA_C630
 config UCSI_HUAWEI_GAOKUN
 	tristate "UCSI Interface Driver for Huawei Matebook E Go"
 	depends on EC_HUAWEI_GAOKUN
+	depends on DRM || !DRM
 	select DRM_AUX_HPD_BRIDGE if DRM_BRIDGE && OF
 	help
 	  This driver enables UCSI support on the Huawei Matebook E Go tablet,
-- 
2.39.5