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SubjectRe: [PATCH 1/5] mips: cavium: no need to check return value of debugfs_create functions
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Hi Greg,

On Tue, Jan 22, 2019 at 08:29:16PM +0100, Greg Kroah-Hartman wrote:
> On Tue, Jan 22, 2019 at 07:22:57PM +0000, Paul Burton wrote:
> > On Tue, Jan 22, 2019 at 08:48:56PM +0200, Aaro Koskinen wrote:
> > > On Tue, Jan 22, 2019 at 03:57:38PM +0100, Greg Kroah-Hartman wrote:
> > > > -static int init_debufs(void)
> > > > +static void init_debugfs(void)
> > > > {
> > > > - struct dentry *show_dentry;
> > > > dir = debugfs_create_dir("oct_ilm", 0);
> > > > - if (!dir) {
> > > > - pr_err("oct_ilm: failed to create debugfs entry oct_ilm\n");
> > > > - return -1;
> > > > - }
> > > > -
> > > > - show_dentry = debugfs_create_file("statistics", 0222, dir, NULL,
> > > > - &oct_ilm_ops);
> > > > - if (!show_dentry) {
> > > > - pr_err("oct_ilm: failed to create debugfs entry oct_ilm/statistics\n");
> > > > - return -1;
> > > > - }
> > > > -
> > > > - show_dentry = debugfs_create_file("reset", 0222, dir, NULL,
> > > > - &reset_statistics_ops);
> > > > - if (!show_dentry) {
> > > > - pr_err("oct_ilm: failed to create debugfs entry oct_ilm/reset\n");
> > > > - return -1;
> > > > - }
> > > > -
> > > > + debugfs_create_file("statistics", 0222, dir, NULL, &oct_ilm_ops);
> > > > + debugfs_create_file("reset", 0222, dir, NULL, &reset_statistics_ops);
> > > > return 0;
> > >
> > > The return needs to be deleted now that the function is void.
> >
> > Well spotted - I'm happy to fix this up whilst applying the patch.
>
> The fact that 0-day didn't catch this makes me worried, is this
> platform/driver not being built there?

It looks like this code ought to be built as a module for
cavium_octeon_defconfig:

$ grep oct_ilm arch/mips/cavium-octeon/Makefile
obj-$(CONFIG_OCTEON_ILM) += oct_ilm.o

$ grep OCTEON_ILM arch/mips/configs/cavium_octeon_defconfig
CONFIG_OCTEON_ILM=m

Fengguang or others - does 0-day build cavium_octeon_defconfig? If so,
does it build modules?

Thanks,
Paul

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