Commit dea878d8 authored by Barnabás Pőcze's avatar Barnabás Pőcze Committed by Hans de Goede
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platform/x86: wmi: make GUID block packed 



The `guid_block` struct is overlaid onto a buffer
coming from the _WDG ACPI object of the device.
For this reason mark the struct packed and add
assertions about sizes.

Signed-off-by: default avatarBarnabás Pőcze <pobrn@protonmail.com>
Link: https://lore.kernel.org/r/20210904175450.156801-16-pobrn@protonmail.com


Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 67f472fd

drivers/platform/x86/wmi.c

+5 −1
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 


#include <linux/acpi.h>

#include <linux/bits.h>

#include <linux/build_bug.h>

#include <linux/device.h>

#include <linux/init.h>

#include <linux/kernel.h>
@@ -50,7 +51,10 @@ struct guid_block { 
	};

	u8 instance_count;

	u8 flags;

};

} __packed;

static_assert(sizeof(typeof_member(struct guid_block, guid)) == 16);

static_assert(sizeof(struct guid_block) == 20);

static_assert(__alignof__(struct guid_block) == 1);



struct wmi_block {

	struct wmi_device dev;