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powerpc/nvram: print no error when pstore backend is not nvram 

Pstore only supports one backend at a time. The preferred
pstore backend is set by passing the pstore.backend=<name>
argument to the kernel at boot time. Currently, while trying
to register with pstore, nvram throws an error message even
when "pstore.backend != nvram", which is unnecessary. This
patch removes the error message in case "pstore.backend != nvram".

Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Hari Bathini 2015-05-11 13:53:43 +05:30 committed by Michael Ellerman
parent d9232a3da8
commit 74943dab6b
1 changed files with 4 additions and 3 deletions
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7
arch/powerpc/kernel/nvram_64.c
View File

@ -581,9 +581,10 @@ static int nvram_pstore_init(void)
spin_lock_init(&nvram_pstore_info.buf_lock);
rc = pstore_register(&nvram_pstore_info);
if (rc != 0)
pr_err("nvram: pstore_register() failed, defaults to "
"kmsg_dump; returned %d\n", rc);
if (rc && (rc != -EPERM))
/* Print error only when pstore.backend == nvram */
pr_err("nvram: pstore_register() failed, returned %d. "
"Defaults to kmsg_dump\n", rc);
return rc;
}