Age | Commit message (Collapse) | Author |
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Avoid specifying internal uapi #include paths with uapi/... as
userspace should not use and never see that.
Neaten message line wrapping above.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Store the camelcase variables in a hash and only emit a warning on the
first use of each new variable.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Even though the kernel doesn't support using floating point constants,
add a regex for them.
Support forms like: 0x123p1, 123e-1, 1.23, 1.5e23f
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hexadecimal values are current found in 2 parts. A hex constant like
0x123456abcdef is found as 0 and then x123456abcdef and later coalesced.
Instead, reverse the order of the 2 searches in $Constant to find 0x
first, then 0 so that the entire hex constant is found all at once.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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switch default case is sometimes written as "default:;". This can cause
new cases added below the default to be defective.
Suggest adding a break; after empty default cases to avoid fallthrough
defects.
Fixed indentation in the other semicolon test above it.
Suggested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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spinlock_t should always be used.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Blank lines around braces are not unnecessary. Emit a message on the use
of these blank lines only when using --strict.
int foo(int bar)
{
something or other....
}
is generally written in the kernel as:
int foo(int bar)
{
something or other...
}
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Preprocessor directives and asm statements should be allowed to have a
line continuation.
Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some projects might want a longer line length so allow a command line
--max-line-length=n control over the long line warnings. The default line
length is 80.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Constantine Shulyupin <const@makelinux.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Consolidate the if (foo) bar(foo) detectors into a single check. Add
debugfs_remove and family.
Based on a patch by Constantine Shulyupin.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Constantine Shulyupin <const@MakeLinux.com>.
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In commit 9c0ece069b32 ("Get rid of Documentation/feature-removal.txt"),
Linus removes feature-removal-schedule.txt from Documentation, but there
is still some reference to this file. So remove them.
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This config item has not carried much meaning for a while now and is
almost always enabled by default. As agreed during the Linux kernel
summit, it is being removed. This will discourage future addition of
CONFIG_EXPERIMENTAL while it is being phased out.
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When the previous line is not a line continuation and the current line has
a line continuation but is not a #define, emit a warning.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some comment styles in net and drivers/net are flagged inappropriately.
Avoid proclaiming inline comments like:
int a = b; /* some comment */
and block comments like:
/*********************
* some comment
********************/
are defective.
Tested with
$ cat drivers/net/t.c
/* foo */
/*
* foo
*/
/* foo
*/
/* foo
* bar */
/****************************
* some long block comment
***************************/
struct foo {
int bar; /* another test */
};
$
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: David Miller <davem@davemloft.net>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix macro name in checkpatch: s/PARAM/PARM/.
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In an effort to get fewer checkpatch reviewer corrections, add a
networking specific style test for the preferred networking comment style.
/* The preferred style for block comments in
* drivers/net/... and net/... is like this
*/
These tests are only used in net/ and drivers/net/
Tested with:
$ cat drivers/net/t.c
/* foo */
/*
* foo
*/
/* foo
*/
/* foo
* bar */
$ ./scripts/checkpatch.pl -f drivers/net/t.c
WARNING: networking block comments don't use an empty /* line, use /* Comment...
#4: FILE: net/t.c:4:
+
+/*
WARNING: networking block comments put the trailing */ on a separate line
#12: FILE: net/t.c:12:
+ * bar */
total: 0 errors, 2 warnings, 12 lines checked
Signed-off-by: Joe Perches <joe@perches.com>
Cc: "Allan, Bruce W" <bruce.w.allan@intel.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Direct conversion of printk(KERN_<LEVEL>... to pr_<level> isn't the
preferred conversion when a struct net_device or struct device is
available.
Hint that using netdev_<level> or dev_<level> is preferred to using
pr_<level>. Add netdev_dbg and dev_dbg variants too.
Miscellaneous whitespace neatening of a misplaced close brace.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Check that a commit log doesn't contain UTF-8 when a mail header
explicitly defines a different charset, like
'Content-Type: text/plain; charset="us-ascii"'
Signed-off-by: Pasi Savanainen <pasi.savanainen@nixu.com>
Cc: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit b13edf7ff2dd ("checkpatch: add checks for do {} while (0) macro
misuses") added a test that is overly simplistic for single statement
macros.
Macros that start with control tests should be enclosed in a do {} while
(0) loop.
Add the necessary control tests to the check.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Tested-by: Franz Schrober <franzschrober@yahoo.de>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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These types of macros should not be used for either a single statement
nor should the macro end with a semi-colon.
Add tests for these conditions.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kernel style uses parenthesis around sizeof.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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usleep_range() shouldn't use the same args for min and max.
Report it when it happens and when both args are decimal and min > max.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Yuval Mintz <yuvalmin@broadcom.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Warn on non-standard signature styles.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Parenthesis alignment doesn't correctly check an existing line after an
inserted or modified line with an open parenthesis.
Fix it.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Suggest the shorter pr_<level> instead of printk(KERN_<LEVEL>.
Prefer to use pr_<level> over bare printks.
Prefer to use pr_warn over pr_warning.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Requires --strict option during invocation:
~/linux$ scripts/checkpatch --strict foo.patch
This tests for a bad habits of mine like this:
return 0 ;
Note that it does allow a special case of a bare semicolon
for empty loops:
while (foo())
;
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Revert the --strict test for the old preferred block
comment style in drivers/net and net/
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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checkpatch already makes an exception to the 80-column rule for quoted
strings, and Documentation/CodingStyle recommends not splitting quoted
strings across lines, because it breaks the ability to grep for the
string. Rather than just permitting this, actively warn about quoted
strings split across lines.
Test case:
void context(void)
{
struct { unsigned magic; const char *strdata; } foo[] = {
{ 42, "these strings"
"do not produce warnings" },
{ 256, "though perhaps"
"they should" },
};
pr_err("this string"
" should produce a warning\n");
pr_err("this multi-line string\n"
"should not produce a warning\n");
asm ("this asm\n\t"
"should not produce a warning");
}
Results of checkpatch on that test case:
WARNING: quoted string split across lines
+ " should produce a warning\n");
total: 0 errors, 1 warnings, 15 lines checked
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add blank lines between a few tests, remove an extraneous one.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Using yield() is generally wrong. Warn on its use.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add some more subjective --strict tests.
Add a test for block comments that start with a blank line followed only
by a line with just the comment block initiator. Prefer a blank line
followed by /* comment...
Add a test for unnecessary spaces after a cast.
Add a test for symmetric uses of braces in if/else blocks.
If one branch needs braces, then all branches should use braces.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add [] to a type extensions. Fixes false positives on:
.attrs = (struct attribute *[]) {
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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in #defines
With any very high precedence operator it is not necessary to enforce
additional parentheses around simple negated expressions. This prevents
us requesting further perentheses around the following:
#define PMEM_IS_FREE(id, index) !(pmem[id].bitmap[index].allocated)
For now add logical and bitwise not and unary minus.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Adjacent strings indicate concatentation, therefore look at identifiers
directly adjacent to literal strings as strings too. This allows us to
better detect the form below and accept it as a simple constant:
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Handle the [ A ... B ] form deeper into a definition, for example:
static const unsigned char pci_irq_swizzle[2][PCI_MAX_DEVICES] = {
{0, 0, 0, 0, 0, 0, 0, 27, 27, [9 ... PCI_MAX_DEVICES - 1] = 0 },
{0, 0, 0, 0, 0, 0, 0, 29, 29, [9 ... PCI_MAX_DEVICES - 1] = 0 },
};
Reported-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix checkpatch.pl when both -q and --ignore are given and prevents it from
printing a
NOTE: Ignored message types: blah
messages.
E.g., if I use -q --ignore PREFER_PACKED,PREFER_ALIGNED, i see:
NOTE: Ignored message types: PREFER_ALIGNED PREFER_PACKED
It makes no sense to print this when -q is given.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Argument alignment across multiple lines should match the open
parenthesis.
Logical continuations should be at the end of the previous line, not the
start of a new line.
These are not required by CodingStyle so make the tests active only when
using --strict.
Improved by some examples from Bruce Allen.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: "Bruce W. Allen" <bruce.w.allan@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It's equivalent to __printf, so prefer __scanf.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Overly indented code should be refactored.
Suggest refactoring excessive indentation of of
if/else/for/do/while/switch statements.
For example:
$ cat t.c
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv)
{
if (1)
if (2)
if (3)
if (4)
if (5)
if (6)
if (7)
if (8)
;
return 0;
}
$ ./scripts/checkpatch.pl -f t.c
WARNING: Too many leading tabs - consider code refactoring
#12: FILE: t.c:12:
+ if (6)
WARNING: Too many leading tabs - consider code refactoring
#13: FILE: t.c:13:
+ if (7)
WARNING: Too many leading tabs - consider code refactoring
#14: FILE: t.c:14:
+ if (8)
total: 0 errors, 3 warnings, 17 lines checked
t.c has style problems, please review.
If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix up type and cast spacing checks such that all occurences on a line are
examined and reported. For example the line below has a valid cast and a
bad type, but currently we check the cast first which is good and stop:
u16* bar = (u16 *)baz;
We will also only report one of the errors in this example:
u16* bar = (u16*)bad;
Move to iterating across all casts and all types, reporting any failure.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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typeof may have various more complex forms as its arguement, not just an
identifier. For now allow us to leak to the first close perenthesis ')'.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ensure the cast type is unique in the context parser, we do not want them
to detect as a comma ','.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We are incorrectly matching square brackets '[' and ']' leading to false
positives on more complex functions as below:
return (dt3155_fbuffer[m]->ready_head -
dt3155_fbuffer[m]->ready_len +
dt3155_fbuffer[m]->nbuffers)%
(dt3155_fbuffer[m]->nbuffers);
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It is common to stub out a function as below, this is triggering a complex
macro format incorrectly. Sort this out:
#define cma_early_regions_reserve(reserve) do { } while (0)
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The following fragment defeats the DEVICE_ATTR style handing, check for
and ignore the close brace '}' in this context:
int foo()
{
}
DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
ata_scsi_lpm_show, ata_scsi_lpm_put);
EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The intent of this check is to catch the options which the user will see
and ensure they are properly described. It is also common for internal
only options to have a brief description. Allow this form.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In the middle of a long definition or similar, there is no possibility of
finding a smaller sub-statement. Optimise this case by skipping statement
aquirey where there are no starts of statement (open brace '{' or
semi-colon ';'). We are likely to scan slightly more than needed still
but this is safest.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Inserting a # into the modifiers list will incorrectly add the null string
to the modifiers list, leading to an infinite loop. As neither of these
is a valid modifier form simply ignore them.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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