From 3e38e82fc6601763cb597d8849a61a871ab06b72 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Tue, 8 May 2018 12:01:10 +0200 Subject: pc-bios/s390-ccw: struct tpi_info must be declared as aligned(4) Upstream-status: n/a yet (likely later, but downstream fix is required now) I've run into a compilation error today with the current version of GCC: In file included from s390-ccw.h:49, from main.c:12: cio.h:128:1: error: alignment 1 of 'struct tpi_info' is less than 4 [-Werror=packed-not-aligned] } __attribute__ ((packed)); ^ cc1: all warnings being treated as errors Since the struct tpi_info contains an element ("struct subchannel_id schid") which is marked as aligned(4), we've got to mark the struct tpi_info as aligned(4), too. Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/cio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pc-bios/s390-ccw/cio.h b/pc-bios/s390-ccw/cio.h index 55eaeee..1a0795f 100644 --- a/pc-bios/s390-ccw/cio.h +++ b/pc-bios/s390-ccw/cio.h @@ -125,7 +125,7 @@ struct tpi_info { __u32 reserved3 : 12; __u32 int_type : 3; __u32 reserved4 : 12; -} __attribute__ ((packed)); +} __attribute__ ((packed, aligned(4))); /* channel command word (type 1) */ struct ccw1 { -- 1.8.3.1