[PATCH 2/6] powerpc: Add PVR & CPU name to dump stack arch description

[Michael Ellerman]

Add the PVR and CPU name to the dump stack arch description, which is
printed in case of an oops.

eg: Hardware name: ... POWER8E (raw) pvr:0x4b0201

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/kernel/prom.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 2e7a04dab2f7..7987d69f1785 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -30,6 +30,7 @@
 #include <linux/libfdt.h>
 #include <linux/cpu.h>
 #include <linux/pgtable.h>
+#include <linux/seq_buf.h>
 
 #include <asm/rtas.h>
 #include <asm/page.h>
@@ -819,6 +820,10 @@ void __init early_init_devtree(void *params)
 
 	dt_cpu_ftrs_scan();
 
+	/* We can now set the CPU name & PVR for the oops output */
+	seq_buf_printf(&ppc_hw_desc, "%s pvr:0x%04lx ", cur_cpu_spec->cpu_name,
+		       mfspr(SPRN_PVR));
+
 	/* Retrieve CPU related informations from the flat tree
 	 * (altivec support, boot CPU ID, ...)
 	 */
-- 
2.37.3