Hi All,
Thanks for comments.
Changes since v7: - improved commit message - added R-Bs
Changes since v6: - removed leftovers from old naming scheme in commit descritions, - added R-Bs.
Changes since v5: - removed patch adding macro, dev_err_probe(dev, PTR_ERR(ptr), ...) should be used instead, - added dev_dbg logging in case of -EPROBE_DEFER, - renamed functions and vars according to comments, - extended docs, - cosmetics.
Original message (with small adjustments):
Recently I took some time to re-check error handling in drivers probe code, and I have noticed that number of incorrect resource acquisition error handling increased and there are no other propositions which can cure the situation.
So I have decided to resend my old proposition of probe_err helper which should simplify resource acquisition error handling, it also extend it with adding defer probe reason to devices_deferred debugfs property, which should improve debugging experience for developers/testers.
I have also added two patches showing usage and benefits of the helper.
My dirty/ad-hoc cocci scripts shows that this helper can be used in at least 2700 places saving about 3500 lines of code.
Regards Andrzej
Andrzej Hajda (5): driver core: add device probe log helper driver core: add deferring probe reason to devices_deferred property drm/bridge/sii8620: fix resource acquisition error handling drm/bridge: lvds-codec: simplify error handling coccinelle: add script looking for cases where probe__err can be used
drivers/base/base.h | 3 + drivers/base/core.c | 46 +++++ drivers/base/dd.c | 23 ++- drivers/gpu/drm/bridge/lvds-codec.c | 10 +- drivers/gpu/drm/bridge/sil-sii8620.c | 21 +-- include/linux/device.h | 3 + probe_err.cocci | 247 +++++++++++++++++++++++++++ 7 files changed, 333 insertions(+), 20 deletions(-) create mode 100644 probe_err.cocci