linux-kernel - [PATCH] drm/bridge: sil_sii8620: depend on INPUT instead of selecting it.

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Message-Id: <20190122141311.10445-1-ronald@innovation.ch>
Date:   Tue, 22 Jan 2019 06:13:11 -0800
From:   Ronald Tschalär <ronald@...ovation.ch>
To:     Andrzej Hajda <a.hajda@...sung.com>,
        Inki Dae <inki.dae@...sung.com>
Cc:     dri-devel@...ts.freedesktop.org,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/bridge: sil_sii8620: depend on INPUT instead of selecting it.

commit d6abe6df706c66d803e6dd4fe98c1b6b7f125a56 (drm/bridge:
sil_sii8620: do not have a dependency of RC_CORE) added a dependency on
INPUT. However, this causes problems with other drivers, in particular
an input driver that depends on MFD_INTEL_LPSS_PCI (to be added in a
future commit):

  drivers/clk/Kconfig:9:error: recursive dependency detected!
  drivers/clk/Kconfig:9:        symbol COMMON_CLK is selected by MFD_INTEL_LPSS
  drivers/mfd/Kconfig:566:      symbol MFD_INTEL_LPSS is selected by MFD_INTEL_LPSS_PCI
  drivers/mfd/Kconfig:580:      symbol MFD_INTEL_LPSS_PCI is implied by KEYBOARD_APPLESPI
  drivers/input/keyboard/Kconfig:73:    symbol KEYBOARD_APPLESPI depends on INPUT
  drivers/input/Kconfig:8:      symbol INPUT is selected by DRM_SIL_SII8620
  drivers/gpu/drm/bridge/Kconfig:83:    symbol DRM_SIL_SII8620 depends on DRM_BRIDGE
  drivers/gpu/drm/bridge/Kconfig:1:     symbol DRM_BRIDGE is selected by DRM_PL111
  drivers/gpu/drm/pl111/Kconfig:1:      symbol DRM_PL111 depends on COMMON_CLK

According to the docs, select should only be used for non-visible
symbols. Furthermore almost all other references to INPUT throughout the
kernel config are depends, not selects. Hence this change.

CC: Inki Dae <inki.dae@...sung.com>
CC: Andrzej Hajda <a.hajda@...sung.com>
Signed-off-by: Ronald Tschalär <ronald@...ovation.ch>
---
 drivers/gpu/drm/bridge/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 2fee47b0d50b..eabedc83f25c 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -83,9 +83,9 @@ config DRM_PARADE_PS8622
 config DRM_SIL_SII8620
 	tristate "Silicon Image SII8620 HDMI/MHL bridge"
 	depends on OF
+	depends on INPUT
 	select DRM_KMS_HELPER
 	imply EXTCON
-	select INPUT
 	select RC_CORE
 	help
 	  Silicon Image SII8620 HDMI/MHL bridge chip driver.
-- 
2.20.1