AcoSail/kernel_optimize_test
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[SCSI] qla2xxx: Correct locking within MSI-X interrupt handlers.

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Both MSI-X vector handlers attempt to acquire the HA's
hardware_lock.  This though requires that interrupts be
disabled/enabled during acquisition and release of the spinlock.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Andrew Vasquez 2008-05-12 22:21:09 -07:00 committed by James Bottomley
parent fd9a29f036
commit 0e973a24f0
1 changed files with 4 additions and 4 deletions
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8
drivers/scsi/qla2xxx/qla_isr.c
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@ -1639,12 +1639,12 @@ qla24xx_msix_rsp_q(int irq, void *dev_id)
ha = dev_id;
reg = &ha->iobase->isp24;
spin_lock(&ha->hardware_lock);
spin_lock_irq(&ha->hardware_lock);
qla24xx_process_response_queue(ha);
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
spin_unlock(&ha->hardware_lock);
spin_unlock_irq(&ha->hardware_lock);
return IRQ_HANDLED;
}
@ -1663,7 +1663,7 @@ qla24xx_msix_default(int irq, void *dev_id)
reg = &ha->iobase->isp24;
status = 0;
spin_lock(&ha->hardware_lock);
spin_lock_irq(&ha->hardware_lock);
do {
stat = RD_REG_DWORD(&reg->host_status);
if (stat & HSRX_RISC_PAUSED) {
@ -1716,7 +1716,7 @@ qla24xx_msix_default(int irq, void *dev_id)
}
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
} while (0);
spin_unlock(&ha->hardware_lock);
spin_unlock_irq(&ha->hardware_lock);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {