AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/scsi/megaraid
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Yinghai Lu e7f851684e megaraid_sas: Fix probing cards without io port 
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.

Fixes: b6d5d8808b ("megaraid_sas: Use lowest memory bar for SR-IOV VF support")
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-08-10 22:28:54 -04:00
..
Kconfig.megaraid
Makefile [SCSI] megaraid_sas: Add 9565/9285 specific code 2010-12-22 23:26:53 -06:00
mbox_defs.h Fix common misspellings 2011-03-31 11:26:23 -03:00
mega_common.h scsi: use 64-bit LUNs 2014-07-17 22:07:37 +02:00
megaraid_ioctl.h
megaraid_mbox.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
megaraid_mbox.h
megaraid_mm.c megaraid: Fix possible NULL pointer deference in mraid_mm_ioctl 2016-01-08 13:03:53 -05:00
megaraid_mm.h
megaraid_sas_base.c megaraid_sas: Fix probing cards without io port 2016-08-10 22:28:54 -04:00
megaraid_sas_fp.c megaraid_sas: Fastpath region lock bypass 2016-02-23 21:27:02 -05:00
megaraid_sas_fusion.c megaraid_sas: Fix probing cards without io port 2016-08-10 22:28:54 -04:00
megaraid_sas_fusion.h megaraid_sas: Reply Descriptor Post Queue (RDPQ) support 2016-02-23 21:27:02 -05:00
megaraid_sas.h megaraid_sas: driver version upgrade 2016-04-15 16:53:22 -04:00