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2017-11-14coccinelle: use exists to improve efficiencyJulia Lawall
This just needs to find any reassignment of the loop iterator, and doesn't need such a thing on all execution paths, so use exists on the first rule. Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-07-22scripts/coccinelle: require coccinelle >= 1.0.4 on device_node_continue.cocciLuis R. Rodriguez
Make use of the new Requires: tag to be able to specify coccinelle binary version requirements. The cocci file device_node_continue.cocci requires at least coccinelle 1.0.4. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Acked-by: Nicolas Palix <nicolas.palix@imag.fr> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-02-18scripts/coccinelle: modernize &Julia Lawall
& is no longer allowed in column 0, since Coccinelle 1.0.4. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Tested-by: Nishanth Menon <nm@ti.com> Cc: stable@vger.kernel.org Signed-off-by: Michal Marek <mmarek@suse.com>
2015-10-26cocinelle: iterators: semantic patch to delete unneeded of_node_putJulia Lawall
Device node iterators perform an of_node_put on each iteration, so putting an of_node_put before a continue results in a double put. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-07-03Coccinelle: Update the options used to the new option schemeNicolas Palix
spatch has changed its option scheme. E.g., --no_show_diff is now --no-show-diff This patch updates: - scripts/coccicheck - Semantic patches under scripts/coccinelle/ Signed-off-by: Nicolas Palix <nicolas.palix@imag.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-07-13scripts/coccinelle: list iterator variable semantic patchJulia Lawall
If list_for_each_entry, etc complete a traversal of the list, the iterator variable ends up pointing to an address at an offset from the list head, and not a meaningful structure. Thus this value should not be used after the end of the iterator. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-01-15scripts/coccinelle: improve the coverage of some semantic patchesJulia Lawall
This patch ensures that all semantic patches in the scripts/coccinelle directory provide the report option. Report messages that include line numbers now have the line number preceded by "line" for easier subsequent processing. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-08-31Coccinelle: Add iterators/list_entry_update.cocciNicolas Palix
list_for_each_entry uses its first argument to get from one element of the list to the next, so it is usually not a good idea to reassign it. The first rule finds such a reassignment and the second rule checks that there is a path from the reassignment back to the top of the loop. Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-08-31Coccinelle: Add iterators/itnull.cocciNicolas Palix
Many iterators have the property that the first argument is always bound to a real list element, never NULL. False positives arise for some iterators that do not have this property, or in cases when the loop cursor is reassigned. The latter should only happen when the matched code is on the way to a loop exit (break, goto, or return). Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-08-31Coccinelle: Add iterators/fen.cocciNicolas Palix
for_each_node iterators only exit normally when the loop cursor is NULL, so there is no point to call of_node_put on the final value. Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Michal Marek <mmarek@suse.cz>