> From: Jakub Kicinski [mailto:jakub.kicin...@netronome.com] > > On Thu, 7 Dec 2017 13:10:39 +0900, Prashant Bhole wrote: > > > From: Jakub Kicinski [mailto:jakub.kicin...@netronome.com] > > > > > > On Thu, 7 Dec 2017 10:02:13 +0900, Prashant Bhole wrote: > > > > - Handled debugfs_create_dir failure in nsim_init() > > > > - Fixed return value of nsim_module_init() when debugfs_create_dir > > > > fails > > > > > > > > Signed-off-by: Prashant Bhole <bhole_prashant...@lab.ntt.co.jp> > > > > > > Why? Failing to expose the state via DebugFS is not fatal to the driver. > > > > Ok, my intention was to handle the return code properly, which is not > > needed as per your comment. > > Shall I remove the existing handling in nsim_module_init() in separate > > patch? > > I was going back and forth on the error handling quite a bit writing that code. In > the end I decided to leave the module_init check and check for bpf prog > directory. Former one is mostly useful to make sure the is no duplicate directory > with the same name, the latter to limit possible false positive in the selftest..
Ok. Currently return value is checked with IS_ERR(). But when Debug FS is enabled, debugfs_create_dir will never return error value. It returns either NULL or a valid pointer. Shall I replace IS_ERR with NULL check or IS_ERR_OR_NULL check? -Prashant
