diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_nx.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_nx.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c index b3ba0de5d4fb..0677295957bc 100644 --- a/drivers/scsi/qla2xxx/qla_nx.c +++ b/drivers/scsi/qla2xxx/qla_nx.c @@ -489,29 +489,26 @@ qla82xx_rd_32(struct qla_hw_data *ha, ulong off_in) return data; } -#define IDC_LOCK_TIMEOUT 100000000 +/* + * Context: task, might sleep + */ int qla82xx_idc_lock(struct qla_hw_data *ha) { - int i; - int done = 0, timeout = 0; + const int delay_ms = 100, timeout_ms = 2000; + int done, total = 0; - while (!done) { + might_sleep(); + + while (true) { /* acquire semaphore5 from PCI HW block */ done = qla82xx_rd_32(ha, QLA82XX_PCIE_REG(PCIE_SEM5_LOCK)); if (done == 1) break; - if (timeout >= IDC_LOCK_TIMEOUT) + if (WARN_ON_ONCE(total >= timeout_ms)) return -1; - timeout++; - - /* Yield CPU */ - if (!in_interrupt()) - schedule(); - else { - for (i = 0; i < 20; i++) - cpu_relax(); - } + total += delay_ms; + msleep(delay_ms); } return 0; @@ -965,7 +962,7 @@ qla82xx_read_status_reg(struct qla_hw_data *ha, uint32_t *val) static int qla82xx_flash_wait_write_finish(struct qla_hw_data *ha) { - uint32_t val; + uint32_t val = 0; int i, ret; scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); |