From: Arnd Bergmann <arnd@kernel.org>
To: "Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Shannon Nelson <shannon.nelson@amd.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] vpda: pds: fix building without debugfs
Date: Wed, 19 Jul 2023 21:40:52 +0200 [thread overview]
Message-ID: <20230719194058.1606869-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
The new debugfs code still gets called when debugfs is disabled, resulting
in a link failure:
ERROR: modpost: "pds_vdpa_debugfs_del_vdpadev" [drivers/vdpa/pds/pds_vdpa.ko] undefined!
ERROR: modpost: "pds_vdpa_debugfs_add_vdpadev" [drivers/vdpa/pds/pds_vdpa.ko] undefined!
ERROR: modpost: "pds_vdpa_debugfs_reset_vdpadev" [drivers/vdpa/pds/pds_vdpa.ko] undefined!
ERROR: modpost: "pds_vdpa_debugfs_create" [drivers/vdpa/pds/pds_vdpa.ko] undefined!
ERROR: modpost: "pds_vdpa_debugfs_add_ident" [drivers/vdpa/pds/pds_vdpa.ko] undefined!
ERROR: modpost: "pds_vdpa_debugfs_destroy" [drivers/vdpa/pds/pds_vdpa.ko] undefined!
ERROR: modpost: "pds_vdpa_debugfs_add_pcidev" [drivers/vdpa/pds/pds_vdpa.ko] undefined!
Add the usual #if/#else block around the declarations to supply empty stubs
for the broken case.
Fixes: 151cc834f3dda ("pds_vdpa: add support for vdpa and vdpamgmt interfaces")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/vdpa/pds/debugfs.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/vdpa/pds/debugfs.h b/drivers/vdpa/pds/debugfs.h
index c088a4e8f1e92..6fbd64ace13a3 100644
--- a/drivers/vdpa/pds/debugfs.h
+++ b/drivers/vdpa/pds/debugfs.h
@@ -6,6 +6,7 @@
#include <linux/debugfs.h>
+#ifdef CONFIG_DEBUG_FS
void pds_vdpa_debugfs_create(void);
void pds_vdpa_debugfs_destroy(void);
void pds_vdpa_debugfs_add_pcidev(struct pds_vdpa_aux *vdpa_aux);
@@ -13,5 +14,14 @@ void pds_vdpa_debugfs_add_ident(struct pds_vdpa_aux *vdpa_aux);
void pds_vdpa_debugfs_add_vdpadev(struct pds_vdpa_aux *vdpa_aux);
void pds_vdpa_debugfs_del_vdpadev(struct pds_vdpa_aux *vdpa_aux);
void pds_vdpa_debugfs_reset_vdpadev(struct pds_vdpa_aux *vdpa_aux);
+#else
+static inline void pds_vdpa_debugfs_create(void) { }
+static inline void pds_vdpa_debugfs_destroy(void) { }
+static inline void pds_vdpa_debugfs_add_pcidev(struct pds_vdpa_aux *vdpa_aux) { }
+static inline void pds_vdpa_debugfs_add_ident(struct pds_vdpa_aux *vdpa_aux) { }
+static inline void pds_vdpa_debugfs_add_vdpadev(struct pds_vdpa_aux *vdpa_aux) { }
+static inline void pds_vdpa_debugfs_del_vdpadev(struct pds_vdpa_aux *vdpa_aux) { }
+static inline void pds_vdpa_debugfs_reset_vdpadev(struct pds_vdpa_aux *vdpa_aux) { }
+#endif
#endif /* _PDS_VDPA_DEBUGFS_H_ */
--
2.39.2
next reply other threads:[~2023-07-19 19:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-19 19:40 Arnd Bergmann [this message]
2023-07-19 23:04 ` Shannon Nelson
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