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| author | Stephen Boyd <sboyd@codeaurora.org> | 2014-06-03 20:25:27 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2014-06-09 23:39:16 +0200 |
| commit | 2d5c5dbb48253f1729dc09f266a98bd2d7e694cb (patch) | |
| tree | ad8b0e9a885904c216831ee70fc50e262b279baa | |
| parent | 9b24a15d81f4b7cd50c3cf13c0e753c865e345df (diff) | |
| download | linux-2d5c5dbb48253f1729dc09f266a98bd2d7e694cb.tar.bz2 | |
coccinelle: Check for missing NULL terminators in of_device_id tables
Failure to terminate an of_device_id table can lead to confusing
failures depending on where the compiler places the array. Add a
check to make sure these tables are terminated. Thanks to Mitchel
Humpherys for coming up with the pattern initially.
Cc: Mitchel Humpherys <mitchelh@codeaurora.org>
Cc: Gilles Muller <Gilles.Muller@lip6.fr>
Cc: Nicolas Palix <nicolas.palix@imag.fr>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
| -rw-r--r-- | scripts/coccinelle/misc/of_table.cocci | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/of_table.cocci b/scripts/coccinelle/misc/of_table.cocci new file mode 100644 index 000000000000..3c934046a060 --- /dev/null +++ b/scripts/coccinelle/misc/of_table.cocci @@ -0,0 +1,62 @@ +/// Make sure of_device_id tables are NULL terminated +// +// Keywords: of_table +// Confidence: Medium +// Options: --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@depends on context@ +identifier var, arr; +expression E; +@@ +struct of_device_id arr[] = { + ..., + { + .var = E, +* } +}; + +@depends on patch@ +identifier var, arr; +expression E; +@@ +struct of_device_id arr[] = { + ..., + { + .var = E, +- } ++ }, ++ { } +}; + +@r depends on org || report@ +position p1; +identifier var, arr; +expression E; +@@ +struct of_device_id arr[] = { + ..., + { + .var = E, + } + @p1 +}; + +@script:python depends on org@ +p1 << r.p1; +arr << r.arr; +@@ + +cocci.print_main(arr,p1) + +@script:python depends on report@ +p1 << r.p1; +arr << r.arr; +@@ + +msg = "%s is not NULL terminated at line %s" % (arr, p1[0].line) +coccilib.report.print_report(p1[0],msg) |