On Wed, Aug 18, 2021 at 5:11 PM Michal Wajdeczko <michal.wajdec...@intel.com> wrote: > > > > On 18.08.2021 16:20, Daniel Vetter wrote: > > On Thu, Jul 01, 2021 at 05:55:11PM +0200, Michal Wajdeczko wrote: > >> Instead of plain error value (%d) print more user friendly error > >> name (%pe). > >> > >> Signed-off-by: Michal Wajdeczko <michal.wajdec...@intel.com> > >> --- > >> drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 8 ++++---- > >> 1 file changed, 4 insertions(+), 4 deletions(-) > >> > >> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c > >> b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c > >> index a26bb55c0898..18d52c39f0c2 100644 > >> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c > >> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c > >> @@ -167,8 +167,8 @@ static int ct_register_buffer(struct intel_guc_ct *ct, > >> u32 type, > >> err = guc_action_register_ct_buffer(ct_to_guc(ct), type, > >> desc_addr, buff_addr, size); > >> if (unlikely(err)) > >> - CT_ERROR(ct, "Failed to register %s buffer (err=%d)\n", > >> - guc_ct_buffer_type_to_str(type), err); > >> + CT_ERROR(ct, "Failed to register %s buffer (%pe)\n", > >> + guc_ct_buffer_type_to_str(type), ERR_PTR(err)); > > > > errname() is what you want here, not this convoluted jumping through hoops > > to fake an error pointer. > > nope, I was already trying that shortcut, but errname() is not exported > so we fail with > > ERROR: modpost: "errname" [drivers/gpu/drm/i915/i915.ko] undefined! > > so unless we add that export we must follow initial approach [1]
Then we export that function. This is all open source, we can actually fix things up, there should _never_ be a need to hack around things like this. And yes I'm keenly aware that there's a pile of i915-gem code which outright flaunts this principle, but that doesn't mean we should continue with that. scripts/get_maintainers.pl can help with finding all the people you need to cc on that export patch. -Daniel > > -Michal > > [1] > https://cgit.freedesktop.org/drm/drm-tip/commit/?id=57f5677e535ba24b8926a7125be2ef8d7f09323c > > > > > With that: Reviewed-by: Daniel Vetter <daniel.vet...@ffwll.ch> > >> return err; > >> } > >> > >> @@ -195,8 +195,8 @@ static int ct_deregister_buffer(struct intel_guc_ct > >> *ct, u32 type) > >> int err = guc_action_deregister_ct_buffer(ct_to_guc(ct), type); > >> > >> if (unlikely(err)) > >> - CT_ERROR(ct, "Failed to deregister %s buffer (err=%d)\n", > >> - guc_ct_buffer_type_to_str(type), err); > >> + CT_ERROR(ct, "Failed to deregister %s buffer (%pe)\n", > >> + guc_ct_buffer_type_to_str(type), ERR_PTR(err)); > >> return err; > >> } > >> > >> -- > >> 2.25.1 > >> > >> _______________________________________________ > >> Intel-gfx mailing list > >> intel-...@lists.freedesktop.org > >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx > > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
