Hi Avri, all, > > [ 0.449917] ufshcd-renesas e6860000.ufs: ufshcd_query_attr: opcode 0x03 > > for idn 1 failed, index 0, err = 253 > > [ 0.452035] ufshcd-renesas e6860000.ufs: ufshcd_query_attr: opcode 0x03 > > for idn 1 failed, index 0, err = 253 > > [ 0.453859] ufshcd-renesas e6860000.ufs: ufshcd_query_attr: opcode 0x03 > > for idn 1 failed, index 0, err = 253 > > [ 0.453874] ufshcd-renesas e6860000.ufs: ufshcd_query_attr_retry: query > > attribute, idn 1, failed with error 253 after 3 retires > Should be interesting to find out who is trying to read an undefined (reserved) attribute in your system. So, the call trace is: [ 0.455361] Call trace: [ 0.455521] ufshcd_query_attr_retry+0x68/0xb0 [ 0.455808] ufshpb_get_dev_info+0x80/0x110 [ 0.456083] ufshcd_probe_hba+0xce0/0x10d0 [ 0.456349] ufshcd_async_scan+0x34/0x310 [ 0.456609] async_run_entry_fn+0x34/0x130 [ 0.456873] process_one_work+0x1e4/0x434 [ 0.457136] worker_thread+0x174/0x4dc [ 0.457379] kthread+0xdc/0xe0 [ 0.457580] ret_from_fork+0x10/0x20 which leads me to this call in ufshpb_get_dev_info(): 2622 ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR, 2623 QUERY_ATTR_IDN_MAX_HPB_SINGLE_CMD, 0, 0, &max_single_cmd); And from here on, I miss the UFS experience to debug further. But I will happily provide more information if people give me pointers. All the best, Wolfram
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