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Currently, the data flow of the max/min linkrate in the driver is
* in pm8001_get_lrate_mode():
hardcoded value ==> struct sas_phy
* in pm8001_bytes_dmaed():
struct pm8001_phy ==> struct sas_phy
* in pm8001_phy_control():
libsas data ==> struct pm8001_phy
Since pm8001_bytes_dmaed() follows pm8001_get_lrate_mode(), and the fields
in struct pm8001_phy are not initialized, sysfs
`/sys/class/sas_phy/phy-*/maximum_linkrate` always shows `Unknown`.
To fix the issue, change the dataflow to the following:
* in pm8001_phy_init():
initial value ==> struct pm8001_phy
* in pm8001_get_lrate_mode():
struct pm8001_phy ==> struct sas_phy
* in pm8001_phy_control():
libsas data ==> struct pm8001_phy
For negotiated linkrate, the current dataflow is:
* in pm8001_get_lrate_mode():
iomb data ==> struct asd_sas_phy ==> struct sas_phy
* in pm8001_bytes_dmaed():
struct asd_sas_phy ==> struct sas_phy
Since pm8001_bytes_dmaed() follows pm8001_get_lrate_mode(), the assignment
statements in pm8001_bytes_dmaed() are unnecessary and cleaned up.
Link: https://lore.kernel.org/r/20220707175210.528858-1-changyuanl@google.com
Reviewed-by: Igor Pylypiv <ipylypiv@google.com>
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Changyuan Lyu <changyuanl@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
e78276cadb