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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-06-22 11:16:25 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-06-22 11:16:25 +0200 |
| commit | 48c7d73b2362ce61503551ad70052617b3e8857d (patch) | |
| tree | 6b5ca29fb7964d29128a8d476317c27a61462e52 /lib/lockref.c | |
| parent | 88447c5b93d98be847f428c39ba589779a59eb83 (diff) | |
| parent | 975a6166a8584ee4a1b8bd93098e49dc101d7171 (diff) | |
| download | talos-op-linux-48c7d73b2362ce61503551ad70052617b3e8857d.tar.gz talos-op-linux-48c7d73b2362ce61503551ad70052617b3e8857d.zip | |
Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent
Pull another handful of EFI fixes for v5.2 from Arnd:
- Fix a potential crash after kexec on arm64 with GICv3
- Fix a build warning on x86
- Stop policing the BGRT feature flags
- Use a non-blocking version of SetVariable() in the boot control driver
Diffstat (limited to 'lib/lockref.c')
| -rw-r--r-- | lib/lockref.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/lockref.c b/lib/lockref.c index 3d468b53d4c9..5b34bbd3eba8 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -9,6 +9,7 @@ * failure case. */ #define CMPXCHG_LOOP(CODE, SUCCESS) do { \ + int retry = 100; \ struct lockref old; \ BUILD_BUG_ON(sizeof(old) != 8); \ old.lock_count = READ_ONCE(lockref->lock_count); \ @@ -21,6 +22,8 @@ if (likely(old.lock_count == prev.lock_count)) { \ SUCCESS; \ } \ + if (!--retry) \ + break; \ cpu_relax(); \ } \ } while (0) |
