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efivars: If pstore_register fails, free unneeded pstore buffer

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This is patch 3/3 of a patch set that cleans up pstore_register failure paths.

If efivars fails to register with pstore, there is no point to keeping
the 4 KB buffer around. It's only used by the pstore read/write routines.

Signed-off-by: Lenny Szubowicz <[email protected]>
Reported-by: Naotaka Hamaguchi <[email protected]>
Signed-off-by: Tony Luck <[email protected]>
This commit is contained in:
Lenny Szubowicz 2013-06-28 16:14:11 -04:00 • committed by Tony Luck
commit 0d838347f1
1 changed files with 5 additions and 1 deletions
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6
drivers/firmware/efi/efi-pstore.c
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@ -235,7 +235,11 @@ static __init int efivars_pstore_init(void)
efi_pstore_info.bufsize = 1024;
spin_lock_init(&efi_pstore_info.buf_lock);
pstore_register(&efi_pstore_info);
if (pstore_register(&efi_pstore_info)) {
kfree(efi_pstore_info.buf);
efi_pstore_info.buf = NULL;
efi_pstore_info.bufsize = 0;
}
return 0;
}