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authorJulia Lawall <julia@diku.dk>2008-10-10 21:33:16 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-10-10 21:33:54 +0200
commitb2bbb642ac2829006a81ae164e2f06ebc22f81dd (patch)
treec76cca05a39a1525f6e7978ac338d410ffdbd54f /usr
parentf9c9fe3ecfc0c5ff17728d0c5ee95a4e269ec190 (diff)
downloadlinux-b2bbb642ac2829006a81ae164e2f06ebc22f81dd.tar.bz2
[S390] cio: Correct use of ! and &
In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337, a bug was fixed that involved converting !x & y to !(x & y). The code below shows the same pattern, and thus should perhaps be fixed in the same way. In particular, the result of !scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND is always just !scsw_stctl(&request->irb.scsw). The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E; constant C; @@ ( !E & !C | - !E & C + !(E & C) ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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