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IRQ handlers can be called without IRQs disabled and IRQF_DISABLED

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doesn't work with IRQF_SHARED on modern kernels.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4100 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2012-01-26 04:59:39 +00:00
parent 05f29dd542
commit 40ff4978ab
1 changed files with 10 additions and 7 deletions
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17
qla2x00t/qla_isr.c
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@@ -38,6 +38,7 @@ qla2100_intr_handler(int irq, void *dev_id)
unsigned long iter;
uint16_t hccr;
uint16_t mb[4];
unsigned long flags;
ha = (scsi_qla_host_t *) dev_id;
if (!ha) {
@@ -49,7 +50,7 @@ qla2100_intr_handler(int irq, void *dev_id)
reg = &ha->iobase->isp;
status = 0;
spin_lock(&ha->hardware_lock);
spin_lock_irqsave(&ha->hardware_lock, flags);
for (iter = 50; iter--; ) {
hccr = RD_REG_WORD(&reg->hccr);
if (hccr & HCCR_RISC_PAUSE) {
@@ -100,7 +101,7 @@ qla2100_intr_handler(int irq, void *dev_id)
RD_REG_WORD(&reg->hccr);
}
}
spin_unlock(&ha->hardware_lock);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
@@ -130,6 +131,7 @@ qla2300_intr_handler(int irq, void *dev_id)
uint32_t stat;
uint16_t hccr;
uint16_t mb[4];
unsigned long flags;
ha = (scsi_qla_host_t *) dev_id;
if (!ha) {
@@ -141,7 +143,7 @@ qla2300_intr_handler(int irq, void *dev_id)
reg = &ha->iobase->isp;
status = 0;
spin_lock(&ha->hardware_lock);
spin_lock_irqsave(&ha->hardware_lock, flags);
for (iter = 50; iter--; ) {
stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
if (stat & HSR_RISC_PAUSED) {
@@ -219,7 +221,7 @@ qla2300_intr_handler(int irq, void *dev_id)
WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
RD_REG_WORD_RELAXED(&reg->hccr);
}
spin_unlock(&ha->hardware_lock);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
@@ -1830,6 +1832,7 @@ qla24xx_intr_handler(int irq, void *dev_id)
uint32_t stat;
uint32_t hccr;
uint16_t mb[4];
unsigned long flags;
ha = (scsi_qla_host_t *) dev_id;
if (!ha) {
@@ -1841,7 +1844,7 @@ qla24xx_intr_handler(int irq, void *dev_id)
reg = &ha->iobase->isp24;
status = 0;
spin_lock(&ha->hardware_lock);
spin_lock_irqsave(&ha->hardware_lock, flags);
for (iter = 50; iter--; ) {
stat = RD_REG_DWORD(&reg->host_status);
if (stat & HSRX_RISC_PAUSED) {
@@ -1904,7 +1907,7 @@ qla24xx_intr_handler(int irq, void *dev_id)
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
RD_REG_DWORD_RELAXED(&reg->hccr);
}
spin_unlock(&ha->hardware_lock);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
@@ -2190,7 +2193,7 @@ skip_msix:
skip_msi:
ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
if (ret) {
qla_printk(KERN_WARNING, ha,
"Failed to reserve interrupt %d already in use.\n",