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authorJulia Lawall <julia@diku.dk>2009-09-12 14:25:35 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-09-12 13:41:50 +0100
commit33d7f77850476a8b8df50bd50221bc644dd44357 (patch)
tree85ce15ff3cdc70051276c51d1c6c2a7bf35d8704 /Documentation/iostats.txt
parentcdc65fbe18aef15e92d2ebb410a189fbf956fb06 (diff)
ASoC: Clean up error handling in MPC5200 DMA setup
Error handling code following a kzalloc should free the allocated data. Error handling code following an ioremap should iounmap the allocated data. The semantic match that finds the first problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,f1,l; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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