>>>>> "Yinghai" == Yinghai Lu <[email protected]> writes:
> Found one megaraid_sas HBA probe fails, > > [ 187.235190] scsi host2: Avago SAS based MegaRAID driver > [ 191.112365] megaraid_sas 0000:89:00.0: BAR 0: can't reserve [io > 0x0000-0x00ff] > [ 191.120548] megaraid_sas 0000:89:00.0: IO memory region busy! > and the card has resource like, > [ 125.097714] pci 0000:89:00.0: [1000:005d] type 00 class 0x010400 > [ 125.104446] pci 0000:89:00.0: reg 0x10: [io 0x0000-0x00ff] > [ 125.110686] pci 0000:89:00.0: reg 0x14: [mem 0xce400000-0xce40ffff 64bit] > [ 125.118286] pci 0000:89:00.0: reg 0x1c: [mem 0xce300000-0xce3fffff 64bit] > [ 125.125891] pci 0000:89:00.0: reg 0x30: [mem 0xce200000-0xce2fffff pref] > that does not io port resource allocated from BIOS, and kernel can not assign > one as io port shortage. > > The driver is only looking for MEM, and should not fail. > It turns out megasas_init_fw() etc are using bar index as mask. > index 1 is used as mask 1, so that pci_request_selected_regions() > is trying to request BAR0 instead of BAR1. > Fix all related reference. Kashyap? Sumit? -- Martin K. Petersen Oracle Linux Engineering
