Re: [PATCH v2 6/5] Fix unaligned memory accesses in dmi-sysfs

DMI entries are arranged in memory back to back with no alignment
guarantees. This means that the struct dmi_header passed to callbacks
from dmi_walk() itself isn't byte aligned.  This causes problems on
architectures that expect aligned data, such as IA64.

The dmi-sysfs patchset introduced structure member accesses through
this passed in dmi_header.  Fix this by memcpy()ing the structures to
temporary locations on stack when inspecting/copying them.

Signed-off-by: Mike Waychison <redacted>
Tested-by: Tony Luck <redacted>
---
 dmi-sysfs.c |   28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/drivers/firmware/dmi-sysfs.c b/drivers/firmware/dmi-sysfs.c
index a5afd80..eb26d62 100644
--- a/drivers/firmware/dmi-sysfs.c
+++ b/drivers/firmware/dmi-sysfs.c

@@ -263,20 +263,16 @@ struct dmi_system_event_log {
 	u8	supported_log_type_descriptos[0];
 } __packed;

-static const struct dmi_system_event_log *to_sel(const struct

dmi_header *dh)