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SubjectRe: [PATCH] acpi: watchdog: properly initialize resources
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On Saturday, September 16, 2017 8:56:49 AM CEST Mika Westerberg wrote:
> On Fri, Sep 15, 2017 at 09:55:18PM +0200, Arnd Bergmann wrote:
> > We copy a local resource structure into a list, but only
> > initialize some of its members, as pointed out by gcc-4.4:
> >
> > drivers/acpi/acpi_watchdog.c: In function 'acpi_watchdog_init':
> > drivers/acpi/acpi_watchdog.c:105: error: 'res.child' may be used uninitialized in this function
> > drivers/acpi/acpi_watchdog.c:105: error: 'res.sibling' may be used uninitialized in this function
> > drivers/acpi/acpi_watchdog.c:105: error: 'res.parent' may be used uninitialized in this function
> > drivers/acpi/acpi_watchdog.c:105: error: 'res.desc' may be used uninitialized in this function
> > drivers/acpi/acpi_watchdog.c:105: error: 'res.name' may be used uninitialized in this function
> >
> > Newer compilers can presumably optimize the uninitialized access
> > away entirely and don't warn at all, but rely on the kzalloc()
> > to zero the structure first. This adds an explicit initialization
> > to force consistent behavior.
> >
> > Fixes: 058dfc767008 ("ACPI / watchdog: Add support for WDAT hardware watchdog")
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

Applied, thanks!

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