From 47edc0104c61d609b0898a302267b7269d87a6af Mon Sep 17 00:00:00 2001
From: Vinod Koul <vkoul@kernel.org>
Date: Wed, 25 Nov 2020 11:21:55 +0530
Subject: [PATCH] soundwire: qcom: Fix build failure when slimbus is module
Git-commit: 47edc0104c61d609b0898a302267b7269d87a6af
Patch-mainline: v5.11-rc1
References: jsc#SLE-16518

Commit 5bd773242f75 ("soundwire: qcom: avoid dependency on
CONFIG_SLIMBUS") removed hard dependency on Slimbus for qcom driver but
it results in build failure when: CONFIG_SOUNDWIRE_QCOM=y
CONFIG_SLIMBUS=m

Drivers/soundwire/qcom.o: In function `qcom_swrm_probe':
qcom.c:(.text+0xf44): undefined reference to `slimbus_bus'

Fix this by using IS_REACHABLE() in driver which is recommended to be
used with imply.

Fixes: 5bd773242f75 ("soundwire: qcom: avoid dependency on CONFIG_SLIMBUS")
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lore.kernel.org/r/20201125055155.GD8403@vkoul-mobl
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/soundwire/qcom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index fbca4ebf63e9..6d22df01f354 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -799,7 +799,7 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 	data = of_device_get_match_data(dev);
 	ctrl->rows_index = sdw_find_row_index(data->default_rows);
 	ctrl->cols_index = sdw_find_col_index(data->default_cols);
-#if IS_ENABLED(CONFIG_SLIMBUS)
+#if IS_REACHABLE(CONFIG_SLIMBUS)
 	if (dev->parent->bus == &slimbus_bus) {
 #else
 	if (false) {
-- 
2.26.2