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On Fri, Jun 15, 2007 at 04:50:53PM +0300, Ramagudi Naziir wrote:
> I have a driver from QUATECH that when compiled screams that:
> warning: implicit declaration of function `pcmcia_report_error`
> warning: implicit declaration of function `pcmcia_register_client`
> warning: implicit declaration of function `pcmcia_deregister_client`
> warning: implicit declaration of function `register_serial`
> warning: implicit declaration of function `unregister_serial`
>
> and indeed I can't load it; it shouts about unknown symbols.
Correct, the PCMCIA subsytem got a major overhaul around 2.6.16 or so.
> I checked and saw that, for example the function pcmcia_register_client
> does not exists in modern kernels but does exist in 2.6.10.
>
> Can I use git to find the exact kernel version (or patch)
> this function disappeared ?
Sure. I use pcmcia_report_error cause pcmcia_register_client was
probably removed before the use of git (from 2.6.12-rc2 and on). You
already figured out that the function lives in drivers/pcmcia/, so then
you tell git:
git-whatchanged -p drivers/pcmcia/ | grep pcmcia_report_error
That shows you which files are affected. Then you use git blame to see
who is to blame for the lines in that file:
git blame drivers/pcmcia/ds.c
^1da177e (Linus Torvalds 2005-04-16 15:20:36 -0700 158)
2bc5a9bd (Dominik Brodowski 2005-07-07 17:59:02 -0700 159) static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
^1da177e (Linus Torvalds 2005-04-16 15:20:36 -0700 160) {
^1da177e (Linus Torvalds 2005-04-16 15:20:36 -0700 161) int i;
That tells that commit 2bc5a9bd is responsible. Now you can use git
show to see the complete commit:
git show 2bc5a9bd
If you want to investigate further: the commit was on july 7 2005,
which is after 2.6.12 but before 2.6.12. You can now use gitk to see the exact relation:
gitk v2.6.12..v2.6.13
Type the commit in the "SHA1 ID" box, hit "Goto" and there you go: a
bunch of PCMCIA patches. Gitk even shows that this was merged between
2.6.13-rc2 and 2.6.13-rc3.
Erik
- --
They're all fools. Don't worry. Darwin may be slow, but he'll
eventually get them. -- Matthew Lammers in alt.sysadmin.recovery
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