[Intel-gfx] [PATCH 2/4] drm/i915/guc: Print error name on CTB (de)registration failure
Michal Wajdeczko
michal.wajdeczko at intel.com
Wed Aug 18 15:11:17 UTC 2021
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.wajdeczko at 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]
-Michal
[1]
https://cgit.freedesktop.org/drm/drm-tip/commit/?id=57f5677e535ba24b8926a7125be2ef8d7f09323c
>
> With that: Reviewed-by: Daniel Vetter <daniel.vetter at 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
>>
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>
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