diff options
| author |   Anirban Chakraborty <anirban.chakraborty@qlogic.com> | 2009-12-02 10:36:55 -0800 |
|---|---|---|
| committer |   James Bottomley <James.Bottomley@suse.de> | 2009-12-10 08:54:19 -0600 |
| commit | 3155754a6b7985a80c41d84dd06530ff543f52a8 (patch) | |
| tree | ba11ce0747dbfad6ecdcb6d42d71ca8675122f63 /drivers/scsi/qla2xxx/qla_init.c | |
| parent | [SCSI] qla2xxx: Queue depth ramp up/down modification changes. (diff) | |
| download | linux-dev-3155754a6b7985a80c41d84dd06530ff543f52a8.tar.xz linux-dev-3155754a6b7985a80c41d84dd06530ff543f52a8.zip | |
[SCSI] qla2xxx: fix for multiqueue in MISX disabled case
Fix to accommodate a hardware bug in multiqueue mode that does not
work properly when acknowledgement of MSIX Interrupts is disabled.
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_init.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index b74924b279ef..73a793539d45 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1442,7 +1442,17 @@ qla24xx_config_rings(struct scsi_qla_host *vha) icb->firmware_options_2 |= __constant_cpu_to_le32(BIT_18); - icb->firmware_options_2 &= __constant_cpu_to_le32(~BIT_22); + /* Use Disable MSIX Handshake mode for capable adapters */ + if (IS_MSIX_NACK_CAPABLE(ha)) { + icb->firmware_options_2 &= + __constant_cpu_to_le32(~BIT_22); + ha->flags.disable_msix_handshake = 1; + qla_printk(KERN_INFO, ha, + "MSIX Handshake Disable Mode turned on\n"); + } else { + icb->firmware_options_2 |= + __constant_cpu_to_le32(BIT_22); + } icb->firmware_options_2 |= __constant_cpu_to_le32(BIT_23); WRT_REG_DWORD(®->isp25mq.req_q_in, 0); |