On Thu, Sep 27, 2012 at 12:00:09AM -0500, H Hartley Sweeten wrote: > On Wednesday, September 26, 2012 6:11 PM, Fengguang Wu wrote: > > > > FYI, there are new smatch warnings show up in > > > > tree: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-next > > head: 3cd73bc1cf59b2c9232d9889ba2b148e262054b6 > > commit: 8c7e4277c1197d31c0b34dbaf23e6edddb5978f7 [253/267] staging: comedi: s626: cleanup request_irq in s626_attach_pci() > > > > drivers/staging/comedi/drivers/s626.c:1428 s626_ai_cmd() Error invalid range 4096 to -1 > > drivers/staging/comedi/drivers/s626.c:1448 s626_ai_cmd() Error invalid range 4096 to -1 > > drivers/staging/comedi/drivers/s626.c:1649 s626_ai_cmdtest() Error invalid range 4096 to -1 > > drivers/staging/comedi/drivers/s626.c:1656 s626_ai_cmdtest() Error invalid range 4096 to -1 > > drivers/staging/comedi/drivers/s626.c:2504 s626_attach_pci() warn: '(dev->private)->base_addr' was not released on error > > drivers/staging/comedi/drivers/s626.c:2516 s626_attach_pci() warn: '(dev->private)->base_addr' was not released on error > > + drivers/staging/comedi/drivers/s626.c:2516 s626_attach_pci() warn: 'pcidev->irq' was not released on error > > These shouldn't be "new" warnings. The logic of the code has > not been changed. Its just been shuffled around. > > I'll take a look at the first four tommorrow just to make sure. > They may actually be a problem but they shouldn't be new. Right, it's not really a new *problem*. Technically, it's classified as "new" by the script because of the s626_attach()=>s626_attach_pci() rename, which makes it a new error *message*. This prevents the system from bisecting it to the initial commit that caused the *problem*. Hopefully such mistakes will only happen on a small fraction of pretty old bugs. > The last three warnings should exist in _every_ comedi driver. > The comedi drivers are designed _not_ to release anything in > the "attach" functions. Everything gets released either in the > "detach" function or by the comedi core itself. I think it was > orignally modeled on the tty subsystem. Ah OK. These error messages will be ignored by the build system until there comes another rename ;) > I plan on looking into if it would be cleaner for the "attach" > functions to cleanup after themselves on error. My initial > impression is that the patch to "fix" this is going to be huge... OK, thanks! Fengguang _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
