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authorPhil Carmody <ext-phil.2.carmody@nokia.com>2011-07-14 15:07:13 +0300
committerJiri Kosina <jkosina@suse.cz>2011-07-21 14:10:00 +0200
commit497888cf69bf607ac1fe061a6437e0a670b0022f (patch)
treeac0897eff214f09c89d5f4fbc3c03ef9d010a83c /drivers/acpi/ac.c
parent06b72d06d6b182bdaaaec686dbd8b602949521ee (diff)
treewide: fix potentially dangerous trailing ';' in #defined values/expressions
All these are instances of #define NAME value; or #define NAME(params_opt) value; These of course fail to build when used in contexts like if(foo $OP NAME) while(bar $OP NAME) and may silently generate the wrong code in contexts such as foo = NAME + 1; /* foo = value; + 1; */ bar = NAME - 1; /* bar = value; - 1; */ baz = NAME & quux; /* baz = value; & quux; */ Reported on comp.lang.c, Message-ID: <ab0d55fe-25e5-482b-811e-c475aa6065c3@c29g2000yqd.googlegroups.com> Initial analysis of the dangers provided by Keith Thompson in that thread. There are many more instances of more complicated macros having unnecessary trailing semicolons, but this pile seems to be all of the cases of simple values suffering from the problem. (Thus things that are likely to be found in one of the contexts above, more complicated ones aren't.) Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/acpi/ac.c')
-rw-r--r--drivers/acpi/ac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 58c3f74bd84c..6512b20aeccd 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -89,7 +89,7 @@ struct acpi_ac {
unsigned long long state;
};
-#define to_acpi_ac(x) container_of(x, struct acpi_ac, charger);
+#define to_acpi_ac(x) container_of(x, struct acpi_ac, charger)
#ifdef CONFIG_ACPI_PROCFS_POWER
static const struct file_operations acpi_ac_fops = {