Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755711Ab0KPROi (ORCPT ); Tue, 16 Nov 2010 12:14:38 -0500 Received: from rcsinet10.oracle.com ([148.87.113.121]:44049 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755667Ab0KPROg (ORCPT ); Tue, 16 Nov 2010 12:14:36 -0500 Date: Tue, 16 Nov 2010 09:14:08 -0800 From: Randy Dunlap To: Namhyung Kim Cc: Steffen Klassert , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] 3c59x: fix build failure on !CONFIG_PCI Message-Id: <20101116091408.abd36ec8.randy.dunlap@oracle.com> In-Reply-To: <1289921271-15295-1-git-send-email-namhyung@gmail.com> References: <1289921271-15295-1-git-send-email-namhyung@gmail.com> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.7.1 (GTK+ 2.16.6; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2732 Lines: 72 On Wed, 17 Nov 2010 00:27:51 +0900 Namhyung Kim wrote: > VORTEX_PCI() could return NULL so it needs to be casted before > accessing any member of struct pci_dev. This fixes following > build failure. Likewise VORTEX_EISA() was changed also. > > CC [M] drivers/net/3c59x.o > drivers/net/3c59x.c: In function 'acpi_set_WOL': > drivers/net/3c59x.c:3211:39: warning: dereferencing 'void *' pointer > drivers/net/3c59x.c:3211:39: error: request for member 'current_state' in something not a structure or union > make[3]: *** [drivers/net/3c59x.o] Error 1 > make[2]: *** [drivers/net/3c59x.o] Error 2 > make[1]: *** [sub-make] Error 2 > make: *** [all] Error 2 > > Signed-off-by: Namhyung Kim > --- > drivers/net/3c59x.c | 6 ++++-- > 1 files changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c > index e1da258..0a92436 100644 > --- a/drivers/net/3c59x.c > +++ b/drivers/net/3c59x.c > @@ -699,7 +699,8 @@ DEFINE_WINDOW_IO(32) > #define DEVICE_PCI(dev) NULL > #endif > > -#define VORTEX_PCI(vp) (((vp)->gendev) ? DEVICE_PCI((vp)->gendev) : NULL) > +#define VORTEX_PCI(vp) \ > + ((struct pci_dev *) (((vp)->gendev) ? DEVICE_PCI((vp)->gendev) : NULL)) > > #ifdef CONFIG_EISA > #define DEVICE_EISA(dev) (((dev)->bus == &eisa_bus_type) ? to_eisa_device((dev)) : NULL) > @@ -707,7 +708,8 @@ DEFINE_WINDOW_IO(32) > #define DEVICE_EISA(dev) NULL > #endif > > -#define VORTEX_EISA(vp) (((vp)->gendev) ? DEVICE_EISA((vp)->gendev) : NULL) > +#define VORTEX_EISA(vp) \ > + ((struct eisa_device *) (((vp)->gendev) ? DEVICE_EISA((vp)->gendev) : NULL)) > > /* The action to take with a media selection timer tick. > Note that we deviate from the 3Com order by checking 10base2 before AUI. > -- Hi, Interesting patch. I have reported this build error and looked into fixing it, but did not come up with this solution. Looking at it more: if CONFIG_PCI is not enabled, DEVICE_PCI() is NULL. That makes VORTEX_PCI() (with or without your patch) have a value of NULL. Is the line with the reported syntax error (3211) executed in function acpi_set_WOL() ? If so, let's assume that vp->enable_wol is true. Then what happens on line 3211 (or 3213 after your patch)? if (VORTEX_PCI(vp)->current_state < PCI_D3hot) return; or if I am really confuzed this morning, please tell me how it works. thanks, --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/