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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:10:17 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:10:17 +0000 |
| commit | 9db5397d87fc212863d4750c85ff8b9a6ed42b95 (patch) | |
| tree | 1bd4e8854203c575eabaa99e2c509f8886065733 /drivers/firmware/efi/vars.c | |
| parent | Adding upstream version 6.1.76. (diff) | |
| download | linux-9db5397d87fc212863d4750c85ff8b9a6ed42b95.tar.xz linux-9db5397d87fc212863d4750c85ff8b9a6ed42b95.zip | |
Adding upstream version 6.1.82.upstream/6.1.82
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/firmware/efi/vars.c')
| -rw-r--r-- | drivers/firmware/efi/vars.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c index 0ba9f1831..4ca256bcd 100644 --- a/drivers/firmware/efi/vars.c +++ b/drivers/firmware/efi/vars.c @@ -66,19 +66,28 @@ int efivars_register(struct efivars *efivars, const struct efivar_operations *ops, struct kobject *kobject) { + int rv; + if (down_interruptible(&efivars_lock)) return -EINTR; + if (__efivars) { + pr_warn("efivars already registered\n"); + rv = -EBUSY; + goto out; + } + efivars->ops = ops; efivars->kobject = kobject; __efivars = efivars; pr_info("Registered efivars operations\n"); - + rv = 0; +out: up(&efivars_lock); - return 0; + return rv; } EXPORT_SYMBOL_GPL(efivars_register); |