On Tue, 2017-07-04 at 23:08 +0200, Heinrich Schuchardt wrote:
> On 07/04/2017 10:44 PM, Joe Perches wrote:
> > On Tue, 2017-07-04 at 21:29 +0200, Heinrich Schuchardt wrote:
> > > The U-Boot project uses the same scripts/checkpatch.pl as the Linux
> > > kernel. I ran upon the problem below when working on U-Boot. But I
> > > guess it should be fixed in the Linux upstream.
> > >
> > > Running checkpatch for this email produces
> > > WARNING: storage class should be at the beginning of the declaration
> > >
> > > This relates to the parameter with asmlinkage.
> > >
> > > asmlinkage is at the start of the parameter so I think this a false
> > > positive.
> > >
> > > Signed-off-by: Heinrich.Schuchardt <xypron.g...@gmx.de>
> > > ---
> > >
> > > cmd/bootefi.c | 22 +++++++++++++++++-----
> > > 1 file changed, 17 insertions(+), 5 deletions(-)
> > >
> > > diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> > > index 771300ee94..4df468307c 100644
> > > --- a/cmd/bootefi.c
> > > +++ b/cmd/bootefi.c
> > > @@ -147,6 +147,12 @@ static void *copy_fdt(void *fdt)
> > > return new_fdt;
> > > }
> > >
> > > +static ulong efi_do_enter(void *image_handle,
> > > + struct efi_system_table *st, asmlinkage ulong (*entry)(
> > > + void *image_handle, struct efi_system_table *st))
> > > +{
> > > + return 0;
> > > +}
> > > +
> > > /*
> > > end
> > > */
> >
> > Perhaps this?
> > -------------------------
> >
> > Allow storage class after comma for function pointers.
> >
> > Miscellanea:
> >
> > o Add missing semicolon after WARN statement
> > ---
> > scripts/checkpatch.pl | 5 +++--
> > 1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > index 43171ed88115..c7490ab48ce1 100755
> > --- a/scripts/checkpatch.pl
> > +++ b/scripts/checkpatch.pl
> > @@ -5577,9 +5577,10 @@ sub process {
> > }
> >
> > # Check that the storage class is at the beginning of a declaration
> > - if ($line =~ /\b$Storage\b/ && $line !~ /^.\s*$Storage\b/) {
> > + if ($line =~ /\b$Storage\b/ &&
> > + $line !~ /^.\s*(?:.*,\s*)?$Storage\b/) {
> > WARN("STORAGE_CLASS",
> > - "storage class should be at the beginning of the
> > declaration\n" . $herecurr)
> > + "storage class should be at the beginning of the
> > declaration\n" . $herecurr);
> > }
> >
> > # check the location of the inline attribute, that it is between
> >
>
> Thank you. This works for all cases but
>
> +static ulong efi_do_enter(ulong asmlinkage (*entry)(void *image_handle,
> + struct efi_system_table *st))
> +{
> + return 0;
> +}
> +
>
> Here I get
> WARNING: space prohibited between function name and open parenthesis '('
> where I would have expected
> WARNING: storage class should be at the beginning of the declaration
checkpatch is and always will be a stupid brainless
little script based on a collection of regexes.
It won't get everything correct.
Your example has static as the first entry on the line.
static is a "$Storage" so it is at the beginning of the
declaration.
This particular declaration has a function pointer
as one of its arguments.
I do wonder if asmlinkage is even appropriate as part of
that function pointer argument.
Anyway, maybe this:
---
scripts/checkpatch.pl | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 43171ed88115..21bb6814f8bb 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5576,10 +5576,18 @@ sub process {
"architecture specific defines should be avoided\n"
. $herecurr);
}
+# check that the storage class is not after a type
+ if ($line =~ /\b($Type)\s+($Storage)\b/) {
+ WARN("STORAGE_CLASS",
+ "storage class '$2' should be located before type
'$1'\n" . $herecurr);
+ }
# Check that the storage class is at the beginning of a declaration
- if ($line =~ /\b$Storage\b/ && $line !~ /^.\s*$Storage\b/) {
+ if ($line =~ /\b$Storage\b/ &&
+ $line !~ /^.\s*$Storage/ &&
+ $line =~ /^.\s*(.+?)\$Storage\s/ &&
+ $1 !~ /[\,\)]\s*$/) {
WARN("STORAGE_CLASS",
- "storage class should be at the beginning of the
declaration\n" . $herecurr)
+ "storage class should be at the beginning of the
declaration\n" . $herecurr);
}
# check the location of the inline attribute, that it is between
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