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author | Aaron Sierra <asierra@xes-inc.com> | 2013-12-09 16:05:40 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-18 01:06:19 (GMT) |
commit | 66a01f1158cf5dbe18dd2d5db7bb24080363ae21 (patch) | |
tree | 18e940199aaf250110cf95edf7f352c91b30889a /lib/ioremap.c | |
parent | c326cc023e40ef741751a084b72796947bd37a66 (diff) | |
download | linux-66a01f1158cf5dbe18dd2d5db7bb24080363ae21.tar.xz |
vme_user: Update API to work in mixed environments
This patch updates the vme_master and vme_slave structures to use
types with well defined size and to prevent the compiler from
inserting padding (between enable and vme_addr for one).
The original vme_master and vme_slave structs would be different
sizes and have different layouts depending on whether they were built
for a 32-bit or 64-bit system.
On x86 it is possible to have a 32-bit userspace and a 64-bit kernel.
In this type of environment, the userspace and kernel vme_user APIs
would disagree and prevent ioctls from executing (based on ioctl
signatures from _IOR and _IOW).
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Acked-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/ioremap.c')
0 files changed, 0 insertions, 0 deletions