[Qemu-stable] [PATCH 078/113] pc-bios/s390-ccw: struct tpi_info must be declared as aligned(4)

[Michael Roth]

From: Thomas Huth <address@hidden>

I've run into a compilation error today with the current version of GCC 8:

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.

CC: address@hidden
Signed-off-by: Thomas Huth <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Cornelia Huck <address@hidden>
Acked-by: Christian Borntraeger <address@hidden>
Signed-off-by: Cornelia Huck <address@hidden>
(cherry picked from commit a6e4385dea94850d7b06b0542e7960c1063fdabd)
Signed-off-by: Michael Roth <address@hidden>
---
 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 55eaeee4b6..1a0795f645 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 {
-- 
2.11.0