Hi Ville. On Thu, May 14, 2020 at 09:40:40PM +0300, Ville Syrjala wrote: > From: Ville Syrjälä <[email protected]> > > To make it easier to figure out what caused a particular debug > message let's print out aux->name. > > v2: Convert drm_dp_send_real_edid_checksum() too > > Cc: Sam Ravnborg <[email protected]> > Signed-off-by: Ville Syrjälä <[email protected]> > --- > IIRC Sam suggested that I switch to per-device logging functions at the > same time. I could imagine I did.
> Sadly that's going to require some amount of actual work: > For i915/amdgpu/nouveau/etc. aux->dev is connector->kdev instead of the > pdev->dev we want, which we could handle by walking up the tree several > levels. However it looks like some of the armish drivers stick pdev->dev > directly into aux->dev so there we don't want to walk up the tree. This > means either one set of drivers will need to change their aux->dev > assignment approach, or we're going to need another device pointer in > there. I didn't even want to look what the bridge drivers put there. > In the meantime I refreshed the original patch which at least lets > us see aux->name... Thanks for the detailed explanation. Patch is: Acked-by: Sam Ravnborg <[email protected]> > > drivers/gpu/drm/drm_dp_helper.c | 67 ++++++++++++++++++--------------- > 1 file changed, 37 insertions(+), 30 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c > index 43e57632b00a..743ead068a43 100644 > --- a/drivers/gpu/drm/drm_dp_helper.c > +++ b/drivers/gpu/drm/drm_dp_helper.c > @@ -257,7 +257,8 @@ static int drm_dp_dpcd_access(struct drm_dp_aux *aux, u8 > request, > err = ret; > } > > - DRM_DEBUG_KMS("Too many retries, giving up. First error: %d\n", err); > + DRM_DEBUG_KMS("%s: Too many retries, giving up. First error: %d\n", > + aux->name, err); > ret = err; > > unlock: > @@ -376,43 +377,44 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux > *aux, > > if (drm_dp_dpcd_read(aux, DP_DEVICE_SERVICE_IRQ_VECTOR, > &auto_test_req, 1) < 1) { > - DRM_ERROR("DPCD failed read at register 0x%x\n", > - DP_DEVICE_SERVICE_IRQ_VECTOR); > + DRM_ERROR("%s: DPCD failed read at register 0x%x\n", > + aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR); > return false; > } > auto_test_req &= DP_AUTOMATED_TEST_REQUEST; > > if (drm_dp_dpcd_read(aux, DP_TEST_REQUEST, &link_edid_read, 1) < 1) { > - DRM_ERROR("DPCD failed read at register 0x%x\n", > - DP_TEST_REQUEST); > + DRM_ERROR("%s: DPCD failed read at register 0x%x\n", > + aux->name, DP_TEST_REQUEST); > return false; > } > link_edid_read &= DP_TEST_LINK_EDID_READ; > > if (!auto_test_req || !link_edid_read) { > - DRM_DEBUG_KMS("Source DUT does not support TEST_EDID_READ\n"); > + DRM_DEBUG_KMS("%s: Source DUT does not support > TEST_EDID_READ\n", > + aux->name); > return false; > } > > if (drm_dp_dpcd_write(aux, DP_DEVICE_SERVICE_IRQ_VECTOR, > &auto_test_req, 1) < 1) { > - DRM_ERROR("DPCD failed write at register 0x%x\n", > - DP_DEVICE_SERVICE_IRQ_VECTOR); > + DRM_ERROR("%s: DPCD failed write at register 0x%x\n", > + aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR); > return false; > } > > /* send back checksum for the last edid extension block data */ > if (drm_dp_dpcd_write(aux, DP_TEST_EDID_CHECKSUM, > &real_edid_checksum, 1) < 1) { > - DRM_ERROR("DPCD failed write at register 0x%x\n", > - DP_TEST_EDID_CHECKSUM); > + DRM_ERROR("%s: DPCD failed write at register 0x%x\n", > + aux->name, DP_TEST_EDID_CHECKSUM); > return false; > } > > test_resp |= DP_TEST_EDID_CHECKSUM_WRITE; > if (drm_dp_dpcd_write(aux, DP_TEST_RESPONSE, &test_resp, 1) < 1) { > - DRM_ERROR("DPCD failed write at register 0x%x\n", > - DP_TEST_RESPONSE); > + DRM_ERROR("%s: DPCD failed write at register 0x%x\n", > + aux->name, DP_TEST_RESPONSE); > return false; > } > > @@ -737,10 +739,11 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, > struct drm_dp_aux_msg *msg) > * Avoid spamming the kernel log with timeout errors. > */ > if (ret == -ETIMEDOUT) > - DRM_DEBUG_KMS_RATELIMITED("transaction timed > out\n"); > + DRM_DEBUG_KMS_RATELIMITED("%s: transaction > timed out\n", > + aux->name); > else > - DRM_DEBUG_KMS("transaction failed: %d\n", ret); > - > + DRM_DEBUG_KMS("%s: transaction failed: %d\n", > + aux->name, ret); > return ret; > } > > @@ -754,11 +757,12 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, > struct drm_dp_aux_msg *msg) > break; > > case DP_AUX_NATIVE_REPLY_NACK: > - DRM_DEBUG_KMS("native nack (result=%d, size=%zu)\n", > ret, msg->size); > + DRM_DEBUG_KMS("%s: native nack (result=%d, size=%zu)\n", > + aux->name, ret, msg->size); > return -EREMOTEIO; > > case DP_AUX_NATIVE_REPLY_DEFER: > - DRM_DEBUG_KMS("native defer\n"); > + DRM_DEBUG_KMS("%s: native defer\n", aux->name); > /* > * We could check for I2C bit rate capabilities and if > * available adjust this interval. We could also be > @@ -772,7 +776,8 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, > struct drm_dp_aux_msg *msg) > continue; > > default: > - DRM_ERROR("invalid native reply %#04x\n", msg->reply); > + DRM_ERROR("%s: invalid native reply %#04x\n", > + aux->name, msg->reply); > return -EREMOTEIO; > } > > @@ -787,13 +792,13 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, > struct drm_dp_aux_msg *msg) > return ret; > > case DP_AUX_I2C_REPLY_NACK: > - DRM_DEBUG_KMS("I2C nack (result=%d, size=%zu)\n", > - ret, msg->size); > + DRM_DEBUG_KMS("%s: I2C nack (result=%d, size=%zu)\n", > + aux->name, ret, msg->size); > aux->i2c_nack_count++; > return -EREMOTEIO; > > case DP_AUX_I2C_REPLY_DEFER: > - DRM_DEBUG_KMS("I2C defer\n"); > + DRM_DEBUG_KMS("%s: I2C defer\n", aux->name); > /* DP Compliance Test 4.2.2.5 Requirement: > * Must have at least 7 retries for I2C defers on the > * transaction to pass this test > @@ -807,12 +812,13 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, > struct drm_dp_aux_msg *msg) > continue; > > default: > - DRM_ERROR("invalid I2C reply %#04x\n", msg->reply); > + DRM_ERROR("%s: invalid I2C reply %#04x\n", > + aux->name, msg->reply); > return -EREMOTEIO; > } > } > > - DRM_DEBUG_KMS("too many retries, giving up\n"); > + DRM_DEBUG_KMS("%s: Too many retries, giving up\n", aux->name); > return -EREMOTEIO; > } > > @@ -841,8 +847,8 @@ static int drm_dp_i2c_drain_msg(struct drm_dp_aux *aux, > struct drm_dp_aux_msg *o > return err == 0 ? -EPROTO : err; > > if (err < msg.size && err < ret) { > - DRM_DEBUG_KMS("Partial I2C reply: requested %zu bytes > got %d bytes\n", > - msg.size, err); > + DRM_DEBUG_KMS("%s: Partial I2C reply: requested %zu > bytes got %d bytes\n", > + aux->name, msg.size, err); > ret = err; > } > > @@ -1021,11 +1027,12 @@ static void drm_dp_aux_crc_work(struct work_struct > *work) > } > > if (ret == -EAGAIN) { > - DRM_DEBUG_KMS("Get CRC failed after retrying: %d\n", > - ret); > + DRM_DEBUG_KMS("%s: Get CRC failed after retrying: %d\n", > + aux->name, ret); > continue; > } else if (ret) { > - DRM_DEBUG_KMS("Failed to get a CRC: %d\n", ret); > + DRM_DEBUG_KMS("%s: Failed to get a CRC: %d\n", > + aux->name, ret); > continue; > } > > @@ -1387,8 +1394,8 @@ int drm_dp_read_desc(struct drm_dp_aux *aux, struct > drm_dp_desc *desc, > > dev_id_len = strnlen(ident->device_id, sizeof(ident->device_id)); > > - DRM_DEBUG_KMS("DP %s: OUI %*phD dev-ID %*pE HW-rev %d.%d SW-rev %d.%d > quirks 0x%04x\n", > - is_branch ? "branch" : "sink", > + DRM_DEBUG_KMS("%s: DP %s: OUI %*phD dev-ID %*pE HW-rev %d.%d SW-rev > %d.%d quirks 0x%04x\n", > + aux->name, is_branch ? "branch" : "sink", > (int)sizeof(ident->oui), ident->oui, > dev_id_len, ident->device_id, > ident->hw_rev >> 4, ident->hw_rev & 0xf, > -- > 2.26.2 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
