From 40a2e34a94c336b716f631b2952d233e1ba76e3c Mon Sep 17 00:00:00 2001 From: Andrew Vasquez Date: Mon, 12 Mar 2007 10:41:28 -0700 Subject: [SCSI] qla2xxx: Add cond_resched() calls during HBA flash manipulation. We're observing soft lockups during HBA FLASH retrieval and update. Add cond_resched() each time around the tight-loops during flash read()s/write()s. Signed-off-by: Andrew Vasquez Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_sup.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/scsi/qla2xxx/qla_sup.c') diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c index ff1dd4175a7f..362d041419fc 100644 --- a/drivers/scsi/qla2xxx/qla_sup.c +++ b/drivers/scsi/qla2xxx/qla_sup.c @@ -466,6 +466,7 @@ qla24xx_read_flash_dword(scsi_qla_host_t *ha, uint32_t addr) udelay(10); else rval = QLA_FUNCTION_TIMEOUT; + cond_resched(); } /* TODO: What happens if we time out? */ @@ -508,6 +509,7 @@ qla24xx_write_flash_dword(scsi_qla_host_t *ha, uint32_t addr, uint32_t data) udelay(10); else rval = QLA_FUNCTION_TIMEOUT; + cond_resched(); } return rval; } @@ -1255,6 +1257,7 @@ qla2x00_poll_flash(scsi_qla_host_t *ha, uint32_t addr, uint8_t poll_data, } udelay(10); barrier(); + cond_resched(); } return status; } @@ -1403,6 +1406,7 @@ qla2x00_read_flash_data(scsi_qla_host_t *ha, uint8_t *tmp_buf, uint32_t saddr, if (saddr % 100) udelay(10); *tmp_buf = data; + cond_resched(); } } @@ -1689,6 +1693,7 @@ update_flash: rval = QLA_FUNCTION_FAILED; break; } + cond_resched(); } } while (0); qla2x00_flash_disable(ha); -- cgit v1.2.1 From fecf97882a8f1e9b52627c30322232c18060aa2c Mon Sep 17 00:00:00 2001 From: Andrew Vasquez Date: Mon, 12 Mar 2007 10:41:29 -0700 Subject: [SCSI] qla2xxx: Drop acquisition of hardware_lock during flash manipulations. There's no need given, I/O has been quiesced, RISC interrupts have been disabled, and finally the RISC has been paused. Flash manipulation on ISP21xx, ISP22xx, and ISP23xx parts requires the RISC to go through a full reset to recover. Signed-off-by: Andrew Vasquez Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_sup.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers/scsi/qla2xxx/qla_sup.c') diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c index 362d041419fc..206bda093da2 100644 --- a/drivers/scsi/qla2xxx/qla_sup.c +++ b/drivers/scsi/qla2xxx/qla_sup.c @@ -1453,7 +1453,6 @@ uint8_t * qla2x00_read_optrom_data(struct scsi_qla_host *ha, uint8_t *buf, uint32_t offset, uint32_t length) { - unsigned long flags; uint32_t addr, midpoint; uint8_t *data; struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; @@ -1462,7 +1461,6 @@ qla2x00_read_optrom_data(struct scsi_qla_host *ha, uint8_t *buf, qla2x00_suspend_hba(ha); /* Go with read. */ - spin_lock_irqsave(&ha->hardware_lock, flags); midpoint = ha->optrom_size / 2; qla2x00_flash_enable(ha); @@ -1477,7 +1475,6 @@ qla2x00_read_optrom_data(struct scsi_qla_host *ha, uint8_t *buf, *data = qla2x00_read_flash_byte(ha, addr); } qla2x00_flash_disable(ha); - spin_unlock_irqrestore(&ha->hardware_lock, flags); /* Resume HBA. */ qla2x00_resume_hba(ha); @@ -1491,7 +1488,6 @@ qla2x00_write_optrom_data(struct scsi_qla_host *ha, uint8_t *buf, { int rval; - unsigned long flags; uint8_t man_id, flash_id, sec_number, data; uint16_t wd; uint32_t addr, liter, sec_mask, rest_addr; @@ -1504,7 +1500,6 @@ qla2x00_write_optrom_data(struct scsi_qla_host *ha, uint8_t *buf, sec_number = 0; /* Reset ISP chip. */ - spin_lock_irqsave(&ha->hardware_lock, flags); WRT_REG_WORD(®->ctrl_status, CSR_ISP_SOFT_RESET); pci_read_config_word(ha->pdev, PCI_COMMAND, &wd); @@ -1697,7 +1692,6 @@ update_flash: } } while (0); qla2x00_flash_disable(ha); - spin_unlock_irqrestore(&ha->hardware_lock, flags); /* Resume HBA. */ qla2x00_resume_hba(ha); -- cgit v1.2.1