On Open Power systems, such call fails in OPAL :
OPAL: Called with bad token 101 !
The check on the OPAL_UNREGISTER_DUMP_REGION call is added for
symmetry. I did not see any errors for it.
Signed-off-by: Cédric Le Goater <c...@fr.ibm.com>
---
arch/powerpc/platforms/powernv/opal.c | 8 ++++++++
1 file changed, 8 insertions(+)
Index: linux.git/arch/powerpc/platforms/powernv/opal.c
===================================================================
--- linux.git.orig/arch/powerpc/platforms/powernv/opal.c
+++ linux.git/arch/powerpc/platforms/powernv/opal.c
@@ -665,6 +665,11 @@ static void __init opal_dump_region_init
uint64_t size;
int rc;
+ if (!opal_check_token(OPAL_REGISTER_DUMP_REGION)) {
+ pr_warn("Firmware doesn't support dump region buffers\n");
+ return;
+ }
+
/* Register kernel log buffer */
addr = log_buf_addr_get();
size = log_buf_len_get();
@@ -794,6 +799,9 @@ void opal_shutdown(void)
mdelay(10);
}
+ if (!opal_check_token(OPAL_UNREGISTER_DUMP_REGION))
+ return;
+
/* Unregister memory dump region */
opal_unregister_dump_region(OPAL_DUMP_REGION_LOG_BUF);
}
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
