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Message-Id: <20230703113025.356682-1-arnd@kernel.org>
Date: Mon, 3 Jul 2023 13:30:06 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
Selvin Xavier <selvin.xavier@...adcom.com>
Cc: Arnd Bergmann <arnd@...db.de>, linux-rdma@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA: fix INFINIBAND_USER_ACCESS dependency
From: Arnd Bergmann <arnd@...db.de>
After a change to the bnxt_re driver, it fails to link when
CONFIG_INFINIBAND_USER_ACCESS is disabled:
aarch64-linux-ld: drivers/infiniband/hw/bnxt_re/ib_verbs.o: in function `bnxt_re_handler_BNXT_RE_METHOD_ALLOC_PAGE':
ib_verbs.c:(.text+0xd64): undefined reference to `ib_uverbs_get_ucontext_file'
aarch64-linux-ld: drivers/infiniband/hw/bnxt_re/ib_verbs.o:(.rodata+0x168): undefined reference to `uverbs_idr_class'
aarch64-linux-ld: drivers/infiniband/hw/bnxt_re/ib_verbs.o:(.rodata+0x1a8): undefined reference to `uverbs_destroy_def_handler'
The problem is that the 'bnxt_re_uapi_defs' structure is built
unconditionally and references a couple of functions that are never
really called in this configuration but instead require other functions
that are left out.
Adding an #ifdef around the new code, or a Kconfig dependency would
address this problem, but adding the compile-time check inside of the
UAPI_DEF_CHAIN_OBJ_TREE_NAMED() macro seems best because that also
addresses the problem in other drivers that may run into the same
dependency.
Fixes: 360da60d6c6ed ("RDMA/bnxt_re: Enable low latency push")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
include/rdma/uverbs_ioctl.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h
index 9d45a5b203169..06287de69cd29 100644
--- a/include/rdma/uverbs_ioctl.h
+++ b/include/rdma/uverbs_ioctl.h
@@ -436,8 +436,10 @@ struct uapi_definition {
}, \
##__VA_ARGS__
#define UAPI_DEF_CHAIN_OBJ_TREE_NAMED(_object_enum, ...) \
- UAPI_DEF_CHAIN_OBJ_TREE(_object_enum, &UVERBS_OBJECT(_object_enum), \
- ##__VA_ARGS__)
+ UAPI_DEF_CHAIN_OBJ_TREE(_object_enum, \
+ PTR_IF(IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS), \
+ &UVERBS_OBJECT(_object_enum)), \
+ ##__VA_ARGS__)
/*
* =======================================
--
2.39.2
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