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scsi: pm80xx: Do not busy wait in MPI init check

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We do not need to busy wait during mpi_init_check() since it is not being
invoked in atomic context. mpi_init_check() is being called from
pm8001_pci_resume(), pm8001_pci_probe(). Hence we are replacing udelay with
msleep.

Link: https://lore.kernel.org/r/20210109123849.17098-2-Viswas.G@microchip.com
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: akshatzen <akshatzen@google.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Ruksar Devadi <Ruksar.devadi@microchip.com>
Signed-off-by: Radha Ramachandran <radha@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
akshatzen 2021-01-09 18:08:42 +05:30 committed by Martin K. Petersen
parent b61d041413
commit d71023af4b
2 changed files with 5 additions and 5 deletions
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6
drivers/scsi/pm8001/pm80xx_hwi.c
View File

@ -997,7 +997,7 @@ static int mpi_init_check(struct pm8001_hba_info *pm8001_ha)
max_wait_count = SPC_DOORBELL_CLEAR_TIMEOUT;
}
do {
udelay(1);
msleep(FW_READY_INTERVAL);
value = pm8001_cr32(pm8001_ha, 0, MSGU_IBDB_SET);
value &= SPCv_MSGU_CFG_TABLE_UPDATE;
} while ((value != 0) && (--max_wait_count));
@ -1010,9 +1010,9 @@ static int mpi_init_check(struct pm8001_hba_info *pm8001_ha)
return -EBUSY;
}
/* check the MPI-State for initialization upto 100ms*/
max_wait_count = 100 * 1000;/* 100 msec */
max_wait_count = 5;/* 100 msec */
do {
udelay(1);
msleep(FW_READY_INTERVAL);
gst_len_mpistate =
pm8001_mr32(pm8001_ha->general_stat_tbl_addr,
GST_GSTLEN_MPIS_OFFSET);

4
drivers/scsi/pm8001/pm80xx_hwi.h
View File

@ -220,8 +220,8 @@
#define SAS_DOPNRJT_RTRY_TMO 128
#define SAS_COPNRJT_RTRY_TMO 128
#define SPCV_DOORBELL_CLEAR_TIMEOUT (30 * 1000 * 1000) /* 30 sec */
#define SPC_DOORBELL_CLEAR_TIMEOUT (15 * 1000 * 1000) /* 15 sec */
#define SPCV_DOORBELL_CLEAR_TIMEOUT (30 * 50) /* 30 sec */
#define SPC_DOORBELL_CLEAR_TIMEOUT (15 * 50) /* 15 sec */
/*
Making ORR bigger than IT NEXUS LOSS which is 2000000us = 2 second.