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authorJulia Lawall <julia@diku.dk>2009-07-12 10:03:42 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-08-20 10:29:23 +1000
commit5b36f1deefa63ef71cd3c3933781318ac61c5469 (patch)
tree307ba565e44fc382335b3c3dfa9e443c49ff6f60 /virt
parent690a2d074ead1867ca5a1976284ca1c89ebc04c6 (diff)
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hvc_console: Drop unnecessary NULL test
The result of container_of should not be NULL. In particular, in this case the argument to the enclosing function has passed though INIT_WORK, which dereferences it, implying that its container cannot be NULL. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ identifier fn,work,x,fld; type T; expression E1,E2; statement S; @@ static fn(struct work_struct *work) { ... when != work = E1 x = container_of(work,T,fld) ... when != x = E2 - if (x == NULL) S ... } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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