On 9/30/22 10:56, John Garry wrote:
From: Igor Pylypiv <ipylypiv@xxxxxxxxxx>
In commit 5a141315ed7c ("scsi: pm80xx: Increase the number of outstanding
I/O supported to 1024") the pm8001_ha->tags allocation was moved into
pm8001_init_ccb_tag(). This changed the execution order of allocation.
pm8001_tag_init() used to be called after the pm8001_ha->tags allocation
and now it is called before the allocation.
Before:
pm8001_pci_probe()
`--> pm8001_pci_alloc()
`--> pm8001_alloc()
`--> pm8001_ha->tags = kzalloc(...)
`--> pm8001_tag_init(pm8001_ha); // OK: tags are allocated
After:
pm8001_pci_probe()
`--> pm8001_pci_alloc()
| `--> pm8001_alloc()
| `--> pm8001_tag_init(pm8001_ha); // NOK: tags are not allocated
|
`--> pm8001_init_ccb_tag()
`--> pm8001_ha->tags = kzalloc(...) // today it is bitmap_zalloc()
Since pm8001_ha->tags_num is zero when pm8001_tag_init() is called it does
nothing. Tags memory is allocated with bitmap_zalloc() so there is no need
to manually clear each bit with pm8001_tag_free().
Reviewed-by: Changyuan Lyu <changyuanl@xxxxxxxxxx>
Signed-off-by: Igor Pylypiv <ipylypiv@xxxxxxxxxx>
Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
---
drivers/scsi/pm8001/pm8001_init.c | 2 --
drivers/scsi/pm8001/pm8001_sas.c | 7 -------
drivers/scsi/pm8001/pm8001_sas.h | 1 -
3 files changed, 10 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Cheerx,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
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