Commit 6501ab5e authored by Pranith Kumar's avatar Pranith Kumar Committed by Michael Ellerman

powerpc/powernv: Skip registering log region when CONFIG_PRINTK=n

When CONFIG_PRINTK=n, log_buf_addr_get() returns NULL and log_buf_len_get()
return 0. Check for these return values and skip registering the dump buffer.
Signed-off-by: default avatarPranith Kumar <bobby.prani@gmail.com>
Reviewed-by: default avatarStewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 3df76a9d
......@@ -667,7 +667,13 @@ static void __init opal_dump_region_init(void)
/* Register kernel log buffer */
addr = log_buf_addr_get();
if (addr == NULL)
return;
size = log_buf_len_get();
if (size == 0)
return;
rc = opal_register_dump_region(OPAL_DUMP_REGION_LOG_BUF,
__pa(addr), size);
/* Don't warn if this is just an older OPAL that doesn't
......
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