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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: kernel test robot <lkp@intel.com>
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev, kbuild-all@lists.01.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>
Subject: Re: [PATCH v2 1/2] serial: 8250_pci: Replace custom pci_match_id() implementation
Date: Tue, 26 Oct 2021 16:35:30 +0300	[thread overview]
Message-ID: <YXgEIhCGXjDUNDU0@smile.fi.intel.com> (raw)
In-Reply-To: <YXgB5vt8+r/Tdo07@smile.fi.intel.com>

On Tue, Oct 26, 2021 at 04:25:58PM +0300, Andy Shevchenko wrote:
> On Tue, Oct 26, 2021 at 08:45:48PM +0800, kernel test robot wrote:

> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386

> > >> drivers/tty/serial/8250/8250_pci.c:1268:6: warning: variable 'amcc' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
> >            if (match)
> >                ^~~~~
> >    drivers/tty/serial/8250/8250_pci.c:1273:6: note: uninitialized use occurs here
> >            if (amcc) {
> >                ^~~~
> >    drivers/tty/serial/8250/8250_pci.c:1268:2: note: remove the 'if' if its condition is always true
> >            if (match)
> >            ^~~~~~~~~~
> >    drivers/tty/serial/8250/8250_pci.c:1265:11: note: initialize the variable 'amcc' to silence this warning
> >            bool amcc;
> >                     ^
> >                      = 0
> 
> Clang gives a right and wrong advice at the same time.
> Thank you for the uninitialized case, but variable is boolean, what's 0 here?
> 
> I'll send a fix ASAP.

Hmm... GCC haven't showed anything here.
In any case, v3 has just been sent out.

-- 
With Best Regards,
Andy Shevchenko



WARNING: multiple messages have this Message-ID (diff)
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: kbuild-all@lists.01.org
Subject: Re: [PATCH v2 1/2] serial: 8250_pci: Replace custom pci_match_id() implementation
Date: Tue, 26 Oct 2021 16:35:30 +0300	[thread overview]
Message-ID: <YXgEIhCGXjDUNDU0@smile.fi.intel.com> (raw)
In-Reply-To: <YXgB5vt8+r/Tdo07@smile.fi.intel.com>

[-- Attachment #1: Type: text/plain, Size: 1237 bytes --]

On Tue, Oct 26, 2021 at 04:25:58PM +0300, Andy Shevchenko wrote:
> On Tue, Oct 26, 2021 at 08:45:48PM +0800, kernel test robot wrote:

> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386

> > >> drivers/tty/serial/8250/8250_pci.c:1268:6: warning: variable 'amcc' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
> >            if (match)
> >                ^~~~~
> >    drivers/tty/serial/8250/8250_pci.c:1273:6: note: uninitialized use occurs here
> >            if (amcc) {
> >                ^~~~
> >    drivers/tty/serial/8250/8250_pci.c:1268:2: note: remove the 'if' if its condition is always true
> >            if (match)
> >            ^~~~~~~~~~
> >    drivers/tty/serial/8250/8250_pci.c:1265:11: note: initialize the variable 'amcc' to silence this warning
> >            bool amcc;
> >                     ^
> >                      = 0
> 
> Clang gives a right and wrong advice at the same time.
> Thank you for the uninitialized case, but variable is boolean, what's 0 here?
> 
> I'll send a fix ASAP.

Hmm... GCC haven't showed anything here.
In any case, v3 has just been sent out.

-- 
With Best Regards,
Andy Shevchenko


  reply	other threads:[~2021-10-26 13:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-25 12:45 [PATCH v2 1/2] serial: 8250_pci: Replace custom pci_match_id() implementation Andy Shevchenko
2021-10-25 12:45 ` [PATCH v2 2/2] serial: 8250_pci: Remove empty stub pci_quatech_exit() Andy Shevchenko
2021-10-26 12:45 ` [PATCH v2 1/2] serial: 8250_pci: Replace custom pci_match_id() implementation kernel test robot
2021-10-26 12:45   ` kernel test robot
2021-10-26 13:25   ` Andy Shevchenko
2021-10-26 13:25     ` Andy Shevchenko
2021-10-26 13:35     ` Andy Shevchenko [this message]
2021-10-26 13:35       ` Andy Shevchenko
2021-10-26 14:47 kernel test robot

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