Messages in this thread Patch in this message | | | From | Pranith Kumar <> | Subject | [PATCH 2/2] powerpc/powernv: Skip registering log region when CONFIG_PRINTK=n | Date | Tue, 20 Jan 2015 18:51:50 -0500 |
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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> CC: Michael Ellerman <mpe@ellerman.id.au> --- arch/powerpc/platforms/powernv/opal.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index f10b9ec..1db119f0 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -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 -- 1.9.1
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