Commit 6501ab5e authored Jan 21, 2015 by Pranith Kumar Committed by Michael Ellerman Jan 27, 2015

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: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 3df76a9d

arch/powerpc/platforms/powernv/opal.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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