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SubjectRe: [PATCH] pcnet32: VLB support fixes
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On Thursday 30 July 2009 23:58:00 Jeff Garzik wrote:
> Bartlomiej Zolnierkiewicz wrote:
> > On Thursday 30 July 2009 23:32:19 Jeff Garzik wrote:
> >> Bartlomiej Zolnierkiewicz wrote:
> >>> From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> >>> Subject: [PATCH] pcnet32: VLB support fixes
> >>>
> >>> VLB support has been broken since at least 2004-2005 period as some
> >>> changes introduced back then assumed that ->pci_dev is always valid,
> >>> lets try to fix it:
> >>>
> >>> - remove duplicated SET_NETDEV_DEV() call
> >>>
> >>> - call SET_NETDEV_DEV() only for PCI devices
> >>>
> >>> - check for ->pci_dev validity in pcnet32_open()
> >>>
> >>> [ Alternatively we may consider removing VLB support but there would not
> >>> be much gain in it since an extra driver code needed for VLB support is
> >>> minimal and quite simple. ]
> >>>
> >>> This takes care of the following entry from Dan's list:
> >>>
> >>> drivers/net/pcnet32.c +1889 pcnet32_probe1(298) warning: variable derefenced before check 'pdev'
> >>>
> >>> Reported-by: Dan Carpenter <error27@gmail.com>
> >>> Cc: corbet@lwn.net
> >>> Cc: eteo@redhat.com
> >>> Cc: Julia Lawall <julia@diku.dk>
> >>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> >>> ---
> >>> PS I still keep the original cc: list from the smatch thread -- please let
> >>> me know if you don't want to be spammed.. ;-)
> >>>
> >>> drivers/net/pcnet32.c | 12 +++++++-----
> >>> 1 file changed, 7 insertions(+), 5 deletions(-)
> >> ACK -- the patch is correct AFAICS -- but would it not be better to have
> >> a struct device for the VLB device?
> >
> > Sure, such addition would be needed for sysfs support on VLB devices..
>
>
> >> We have capability to create struct device for isa and eisa, so VLB is
> >> quite doable.
> >>
> >> Jeff, who converted old-ISDN ISA+EISA+PCI drivers to
> >> hotplug model, once upon a time
> >
> > ..and it seems that you've the needed experience! :)
>
> <grin> In my esteemed experience, I point you to the 39-line
> include/linux/isa.h as a starting point for grep... :)

Send patches.

I don't have a time/motivation for enhancing VLB support, not even
mentioning the access to hardware needed to test such changes..


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