The linkage between the bluetooth driver and the wireless
driver is not defined properly, leading to build problems
such as:

warning: (BT_HCIRSI) selects RSI_COEX which has unmet direct dependencies 
(NETDEVICES && WLAN && WLAN_VENDOR_RSI && BT_HCIRSI && RSI_91X)
drivers/net/wireless/rsi/rsi_91x_main.o: In function `rsi_read_pkt':
(.text+0x205): undefined reference to `rsi_bt_ops'

To actually make it work, we need the following steps:

- remove the bogus 'select RSI_COEX', this is already covered
  by the default
- change RSI_COEX to a 'bool' symbol so that the #ifdefs work
  all the time
- ensure that BT_HCIRSI is built-in whenever RSI_91X is built-in
- prevent BT_HCIRSI from being enabled when CONFIG_BT=m and
  RSI_91X=y, as this cannot work

Fixes: 38aa4da50483 ("Bluetooth: btrsi: add new rsi bluetooth driver")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
 drivers/bluetooth/Kconfig        | 9 ++++++++-
 drivers/bluetooth/Makefile       | 2 +-
 drivers/net/wireless/rsi/Kconfig | 6 +-----
 3 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index d8bbd661dbdb..6b3e8bf69d07 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -394,8 +394,9 @@ config BT_QCOMSMD
 
 config BT_HCIRSI
        tristate "Redpine HCI support"
+       depends on RSI_91X
+       depends on !(BT=m && RSI_91X=y)
        default n
-       select RSI_COEX
        help
          Redpine BT driver.
          This driver handles BT traffic from upper layers and pass
@@ -404,4 +405,10 @@ config BT_HCIRSI
          Say Y here to compile support for HCI over Redpine into the
          kernel or say M to compile as a module.
 
+config BT_HCIRSI_MODULE
+       tristate
+       # ensure that the BT_HCIRSI driver is visible to the core
+       default y if BT_HCIRSI=m && RSI_91X=y
+       default BT_HCIRSI
+
 endmenu
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
index 03cfc1b20c4a..9e8d22712ff3 100644
--- a/drivers/bluetooth/Makefile
+++ b/drivers/bluetooth/Makefile
@@ -28,7 +28,7 @@ obj-$(CONFIG_BT_QCA)          += btqca.o
 
 obj-$(CONFIG_BT_HCIUART_NOKIA) += hci_nokia.o
 
-obj-$(CONFIG_BT_HCIRSI)                += btrsi.o
+obj-$(CONFIG_BT_HCIRSI_MODULE) += btrsi.o
 
 btmrvl-y                       := btmrvl_main.o
 btmrvl-$(CONFIG_DEBUG_FS)      += btmrvl_debugfs.o
diff --git a/drivers/net/wireless/rsi/Kconfig b/drivers/net/wireless/rsi/Kconfig
index f004be33fcfa..bc6195767c61 100644
--- a/drivers/net/wireless/rsi/Kconfig
+++ b/drivers/net/wireless/rsi/Kconfig
@@ -43,12 +43,8 @@ config RSI_USB
          Select M (recommended), if you have a RSI 1x1 wireless module.
 
 config RSI_COEX
-       bool "Redpine Signals WLAN BT Coexistence support"
-       depends on BT_HCIRSI && RSI_91X
-       default y
+       def_bool BT_HCIRSI && RSI_91X
        ---help---
          This option enables the WLAN BT coex support in rsi drivers.
-         Select M (recommended), if you have want to use this feature
-         and you have RS9113 module.
 
 endif # WLAN_VENDOR_RSI
-- 
2.9.0

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