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authorHeiko Carstens <heiko.carstens@de.ibm.com>2016-03-01 12:58:06 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-03-02 13:43:48 +0100
commitce0c12b633846a47e103842149a5bac2e5d261ec (patch)
treeb8e305b904aff2c4e798ae9ec0372506df27051e /arch/s390/kernel/head64.S
parentMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vir... (diff)
downloadlinux-ce0c12b633846a47e103842149a5bac2e5d261ec.tar.xz
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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')
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