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Date: Tue, 1 Dec 2015 12:03:08 +0100
From: Boris Brezillon <boris.brezillon@...e-electrons.com>
To: David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>,
linux-mtd@...ts.infradead.org
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
Hartley Sweeten <hsweeten@...ionengravers.com>,
Ryan Mallon <rmallon@...il.com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <kernel@...gutronix.de>,
Imre Kaloz <kaloz@...nwrt.org>,
Krzysztof Halasa <khalasa@...p.pl>,
Tony Lindgren <tony@...mide.com>, linux-omap@...r.kernel.org,
Alexander Clouter <alex@...riz.org.uk>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
Gregory CLEMENT <gregory.clement@...e-electrons.com>,
Jason Cooper <jason@...edaemon.net>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Andrew Lunn <andrew@...n.ch>, Daniel Mack <daniel@...que.org>,
Haojian Zhuang <haojian.zhuang@...il.com>,
Robert Jarzmik <robert.jarzmik@...e.fr>,
Marek Vasut <marek.vasut@...il.com>,
Steven Miao <realmz6@...il.com>,
adi-buildroot-devel@...ts.sourceforge.net,
Mikael Starvik <starvik@...s.com>,
Jesper Nilsson <jesper.nilsson@...s.com>,
linux-cris-kernel@...s.com, Josh Wu <josh.wu@...el.com>,
Wan ZongShun <mcuos.com@...il.com>,
Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
Maxim Levitsky <maximlevitsky@...il.com>,
Kukjin Kim <kgene@...nel.org>,
Krzysztof Kozlowski <k.kozlowski@...sung.com>,
linux-samsung-soc@...r.kernel.org,
Maxime Ripard <maxime.ripard@...e-electrons.com>,
Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...glegroups.com,
Stefan Agner <stefan@...er.ch>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devel@...verdev.osuosl.org,
Boris Brezillon <boris.brezillon@...e-electrons.com>,
Julia Lawall <Julia.Lawall@...6.fr>
Subject: [PATCH v2 11/25] coccinelle: nand: detect and correct drivers embedding an mtd_info object
Add nand-priv-no-mtd.cocci to detect and correct NAND controller drivers
directly embedding an mtd_info struct in their private struct.
Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc: Julia Lawall <Julia.Lawall@...6.fr>
---
Hi Julia,
Not sure this is the correct way to detect and fix offending drivers,
but I get some warnings when launching coccicheck in org or report mode:
"warning: fix2: inherited metavariable __chipfield not used in the -, +,
or context code"
Note that I don't get those warnings when running in patch mode.
Any idea (feel free to propose a better solution to detect and fix those
offending drivers)?
Best Regards,
Boris
---
scripts/coccinelle/api/nand-priv-no-mtd.cocci | 91 +++++++++++++++++++++++++++
1 file changed, 91 insertions(+)
create mode 100644 scripts/coccinelle/api/nand-priv-no-mtd.cocci
diff --git a/scripts/coccinelle/api/nand-priv-no-mtd.cocci b/scripts/coccinelle/api/nand-priv-no-mtd.cocci
new file mode 100644
index 0000000..b2c0c22
--- /dev/null
+++ b/scripts/coccinelle/api/nand-priv-no-mtd.cocci
@@ -0,0 +1,91 @@
+/// Fix NAND controller drivers declaring their own mtd_info struct instead
+/// of the one provided in struct nand_chip.
+///
+// Confidence: Low
+// Copyright: (C) 2015 Boris Brezillon GPL v2.
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@...ch1@
+identifier __chipfield, __mtdfield;
+type __type;
+@@
+(
+ __type {
+ ...
+ struct nand_chip __chipfield;
+ ...
+ struct mtd_info __mtdfield;
+ ...
+ };
+|
+ __type {
+ ...
+ struct mtd_info __mtdfield;
+ ...
+ struct nand_chip __chipfield;
+ ...
+ };
+)
+
+@...1 depends on match1 && patch && !context && !org && !report@
+identifier match1.__mtdfield;
+type match1.__type;
+@@
+ __type {
+ ...
+- struct mtd_info __mtdfield;
+ ...
+ };
+
+@...2 depends on match1 && patch && !context && !org && !report@
+identifier match1.__chipfield, match1.__mtdfield;
+identifier __subfield;
+type match1.__type;
+__type *__priv;
+@@
+<...
+(
+- __priv->__mtdfield.__subfield
++ nand_to_mtd(&__priv->__chipfield)->__subfield
+|
+- &(__priv->__mtdfield)
++ nand_to_mtd(&__priv->__chipfield)
+)
+...>
+
+// ----------------------------------------------------------------------------
+
+@...1_context depends on match1 && !patch && (context || org || report)@
+identifier match1.__mtdfield;
+type match1.__type;
+position j0;
+@@
+
+ __type {
+ ...
+* struct mtd_info __mtdfield@j0;
+ ...
+ };
+
+// ----------------------------------------------------------------------------
+
+@...ipt:python fix1_org depends on org@
+j0 << fix1_context.j0;
+@@
+
+msg = "struct nand_chip already embeds an mtd_info object (use nand_to_mtd())."
+coccilib.org.print_todo(j0[0], msg)
+
+// ----------------------------------------------------------------------------
+
+@...ipt:python fix1_report depends on report@
+j0 << fix1_context.j0;
+@@
+
+msg = "struct nand_chip already embeds an mtd_info object (use nand_to_mtd())."
+coccilib.report.print_report(j0[0], msg)
+
--
2.1.4
--
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