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[2/3] netdevice: add DEFINE_FREE() for dev_put

Message ID 20240325233905.90fc450462e7.I1515fdc09a9f39fdbc26558556dd65a2cb03576a@changeid (mailing list archive)
State RFC
Delegated to: Netdev Maintainers
Headers show
Series using guard/__free in networking | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 4891 this patch: 4891
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers fail 3 maintainers not CCed: edumazet@google.com kuba@kernel.org pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 1058 this patch: 1058
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api warning Found: 'dev_put(' was: 0 now: 1
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 5169 this patch: 5169
netdev/checkpatch warning WARNING: suspect code indent for conditional statements (0, 0)
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Johannes Berg March 25, 2024, 10:31 p.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

For short netdev holds within a function there are still a lot of
users of dev_put() rather than netdev_put(). Add DEFINE_FREE() to
allow making those safer.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/linux/netdevice.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index cb37817d6382..f6c0d731fa35 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4127,6 +4127,8 @@  static inline void dev_put(struct net_device *dev)
 	netdev_put(dev, NULL);
 }
 
+DEFINE_FREE(dev_put, struct net_device *, if (_T) dev_put(_T))
+
 static inline void netdev_ref_replace(struct net_device *odev,
 				      struct net_device *ndev,
 				      netdevice_tracker *tracker,