linux-kernel - [PATCH for-next] cxl: Fix -Werror=return-type in cxl_decoder

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Message-ID: <20250717031251.1043825-1-lizhijian@fujitsu.com>
Date: Thu, 17 Jul 2025 11:12:51 +0800
From: Li Zhijian <lizhijian@...itsu.com>
To: linux-cxl@...r.kernel.org
Cc: dave@...olabs.net,
	jonathan.cameron@...wei.com,
	dave.jiang@...el.com,
	alison.schofield@...el.com,
	vishal.l.verma@...el.com,
	ira.weiny@...el.com,
	dan.j.williams@...el.com,
	linux-kernel@...r.kernel.org,
	Li Zhijian <lizhijian@...itsu.com>
Subject: [PATCH for-next] cxl: Fix -Werror=return-type in cxl_decoder_detach()

Fix following compiling errors:
In file included from ../drivers/cxl/core/pmu.c:10:
../drivers/cxl/core/core.h: In function ‘cxl_decoder_detach’:
../drivers/cxl/core/core.h:65:1: error: no return statement in function returning non-void [-Werror=return-type]
 }
 ^
cc1: some warnings being treated as errors
  CC [M]  drivers/nvdimm/claim.o
make[6]: *** [../scripts/Makefile.build:287: drivers/cxl/core/pmu.o] Error 1
make[6]: *** Waiting for unfinished jobs....
  CC [M]  drivers/infiniband/core/verbs.o

Fixes: b3a88225519c ("cxl/region: Consolidate cxl_decoder_kill_region() and cxl_region_detach()")
Signed-off-by: Li Zhijian <lizhijian@...itsu.com>
---
I'm curious why the LKP robot didn't report this.
---
 drivers/cxl/core/core.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/cxl/core/core.h b/drivers/cxl/core/core.h
index 705a5f09aa78..2669f251d677 100644
--- a/drivers/cxl/core/core.h
+++ b/drivers/cxl/core/core.h
@@ -62,6 +62,7 @@ static inline int cxl_decoder_detach(struct cxl_region *cxlr,
 				     struct cxl_endpoint_decoder *cxled,
 				     int pos, enum cxl_detach_mode mode)
 {
+	return 0;
 }
 static inline int cxl_region_init(void)
 {
-- 
2.41.0