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scsi: pm80xx: Add GET_NVMD timeout during probe

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Add a wait timeout to prevent the kernel from waiting for the GET_NVMD
response forever during probe. Add a check for the controller state before
issuing GET_NVMD request.

Signed-off-by: Changyuan Lyu <changyuanl@google.com>
Signed-off-by: Pranav Prasad <pranavpp@google.com>
Link: https://lore.kernel.org/r/20230419175502.919999-1-pranavpp@google.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Changyuan Lyu 2023-04-19 17:55:02 +00:00 committed by Martin K. Petersen
parent 3aa65f7e25
commit 14a8f116cd
1 changed files with 22 additions and 7 deletions
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29
drivers/scsi/pm8001/pm8001_init.c
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@ -667,7 +667,7 @@ static void pm8001_post_sas_ha_init(struct Scsi_Host *shost,
* Currently we just set the fixed SAS address to our HBA, for manufacture,
* it should read from the EEPROM
*/
static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
static int pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
{
u8 i, j;
u8 sas_add[8];
@ -680,6 +680,12 @@ static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
struct pm8001_ioctl_payload payload;
u16 deviceid;
int rc;
unsigned long time_remaining;
if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) {
pm8001_dbg(pm8001_ha, FAIL, "controller is in fatal error state\n");
return -EIO;
}
pci_read_config_word(pm8001_ha->pdev, PCI_DEVICE_ID, &deviceid);
pm8001_ha->nvmd_completion = &completion;
@ -704,16 +710,23 @@ static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
payload.offset = 0;
payload.func_specific = kzalloc(payload.rd_length, GFP_KERNEL);
if (!payload.func_specific) {
pm8001_dbg(pm8001_ha, INIT, "mem alloc fail\n");
return;
pm8001_dbg(pm8001_ha, FAIL, "mem alloc fail\n");
return -ENOMEM;
}
rc = PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
if (rc) {
kfree(payload.func_specific);
pm8001_dbg(pm8001_ha, INIT, "nvmd failed\n");
return;
pm8001_dbg(pm8001_ha, FAIL, "nvmd failed\n");
return -EIO;
}
wait_for_completion(&completion);
time_remaining = wait_for_completion_timeout(&completion,
msecs_to_jiffies(60*1000)); // 1 min
if (!time_remaining) {
kfree(payload.func_specific);
pm8001_dbg(pm8001_ha, FAIL, "get_nvmd_req timeout\n");
return -EIO;
}
for (i = 0, j = 0; i <= 7; i++, j++) {
if (pm8001_ha->chip_id == chip_8001) {
@ -752,6 +765,7 @@ static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
memcpy(pm8001_ha->sas_addr, &pm8001_ha->phy[0].dev_sas_addr,
SAS_ADDR_SIZE);
#endif
return 0;
}
/*
@ -1167,7 +1181,8 @@ static int pm8001_pci_probe(struct pci_dev *pdev,
pm80xx_set_thermal_config(pm8001_ha);
}
pm8001_init_sas_add(pm8001_ha);
if (pm8001_init_sas_add(pm8001_ha))
goto err_out_shost;
/* phy setting support for motherboard controller */
rc = pm8001_configure_phy_settings(pm8001_ha);
if (rc)