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Date: Tue, 29 Dec 2015 17:24:53 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Stephen Rothwell <sfr@...b.auug.org.au>,
linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
heikki.krogerus@...ux.intel.com, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v2 1/3] device property: add spaces to
PROPERTY_ENTRY_STRING macro
On Wed, 30 Dec 2015 02:49:26 +0100 "Rafael J. Wysocki" <rjw@...ysocki.net> wrote:
> On Monday, December 28, 2015 01:24:13 PM Andy Shevchenko wrote:
> > On Mon, 2015-12-28 at 02:12 +0100, Rafael J. Wysocki wrote:
> > > On Wednesday, December 23, 2015 03:34:42 PM Andy Shevchenko wrote:
> > > > Just a style fix, no functional changes.
> > > >
> > > > To be folded to Andrew's patch.
> > >
> > > What patch?
> >
> > In linux-next from Andrew:
> >
> > e39ece7 include-linux-propertyh-fix-build-issues-with-gcc-444-fix
> > 40bb8a1 include/linux/property.h: fix build issues with gcc-4.4.4
>
> Any pointers to the original patch submission(s)?
I think it was discussed in some followup to something else, I forget.
This:
From: Andrew Morton <akpm@...ux-foundation.org>
Subject: include/linux/property.h: fix build issues with gcc-4.4.4
gcc-4.4.4 has problems with initialization of anonymous unions:
drivers/mfd/intel-lpss-acpi.c:30: error: unknown field 'value' specified in initializer
work around this by crafting the initializers in a manner which the
compiler can handle.
Cc: Kevin Fenzi <kevin@...ye.com>
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---
include/linux/property.h | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff -puN include/linux/property.h~include-linux-propertyh-fix-build-issues-with-gcc-444 include/linux/property.h
--- a/include/linux/property.h~include-linux-propertyh-fix-build-issues-with-gcc-444
+++ a/include/linux/property.h
@@ -175,12 +175,19 @@ struct property_entry {
};
};
+/*
+ * Note: the below four initializers for the anonymous union are carefully
+ * crafted to avoid gcc-4.4.4's problems with initialization of anon unions
+ * and structs.
+ */
+
#define PROPERTY_ENTRY_INTEGER_ARRAY(_name_, _type_, _val_) \
{ \
.name = _name_, \
.length = ARRAY_SIZE(_val_) * sizeof(_type_), \
.is_array = true, \
- .pointer._type_##_data = _val_, \
+ .is_string = false, \
+ { .pointer = _type_##_data = _val_ } }, \
}
#define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_) \
@@ -198,14 +205,15 @@ struct property_entry {
.length = ARRAY_SIZE(_val_) * sizeof(const char *), \
.is_array = true, \
.is_string = true, \
- .pointer.str = _val_, \
+ { .pointer = { .str = _val_ } }, \
}
#define PROPERTY_ENTRY_INTEGER(_name_, _type_, _val_) \
{ \
.name = _name_, \
.length = sizeof(_type_), \
- .value._type_##_data = _val_, \
+ .is_string = false, \
+ { .value = { ._type_##_data = _val_ } }, \
}
#define PROPERTY_ENTRY_U8(_name_, _val_) \
@@ -222,7 +230,7 @@ struct property_entry {
.name = _name_, \
.length = sizeof(_val_), \
.is_string = true, \
- .value.str = _val_, \
+ { .value = {.str = _val_} }, \
}
#define PROPERTY_ENTRY_BOOL(_name_) \
_
--
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