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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2016-03-01 12:58:06 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-03-02 06:43:48 -0600 |
| commit | ce0c12b633846a47e103842149a5bac2e5d261ec (patch) | |
| tree | b8e305b904aff2c4e798ae9ec0372506df27051e /arch/s390/kernel/head64.S | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs (diff) | |
| download | linux-dev-ce0c12b633846a47e103842149a5bac2e5d261ec.tar.xz linux-dev-ce0c12b633846a47e103842149a5bac2e5d261ec.zip | |
s390/dasd: fix diag 0x250 inline assembly
git commit 1ec2772e0c3c ("s390/diag: add a statistic for diagnose
calls") added function calls to gather diagnose statistics.
In case of the dasd diag driver the function call was added between a
register asm statement which initialized register r2 and the inline
assembly itself. The function call clobbers the contents of register
r2 and therefore the diag 0x250 call behaves in a more or less random
way.
Fix this by extracting the function call into a separate function like
we do everywhere else.
Fixes: 1ec2772e0c3c ("s390/diag: add a statistic for diagnose calls")
Cc: <stable@vger.kernel.org> # 4.4+
Reported-and-tested-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/head64.S')
0 files changed, 0 insertions, 0 deletions