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scsi: mpi3mr: Fix scheduling while atomic type bug 

Fix 'scheduling while atomic' type bug, which is observed when
pci_irq_vector() is called from interrupt context.

Link: https://lore.kernel.org/r/20220912135742.11764-9-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sreekanth Reddy 2022-09-12 19:27:41 +05:30 committed by Martin K. Petersen
parent f84e8b5bb5
commit 2e31be8697
2 changed files with 5 additions and 6 deletions
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2
drivers/scsi/mpi3mr/mpi3mr.h
View File

@ -431,12 +431,14 @@ struct op_reply_qinfo {
* struct mpi3mr_intr_info - Interrupt cookie information
*
* @mrioc: Adapter instance reference
* @os_irq: irq number
* @msix_index: MSIx index
* @op_reply_q: Associated operational reply queue
* @name: Dev name for the irq claiming device
*/
struct mpi3mr_intr_info {
struct mpi3mr_ioc *mrioc;
int os_irq;
u16 msix_index;
struct op_reply_qinfo *op_reply_q;
char name[MPI3MR_NAME_LENGTH];

9
drivers/scsi/mpi3mr/mpi3mr_fw.c
View File

@ -627,15 +627,11 @@ static irqreturn_t mpi3mr_isr_primary(int irq, void *privdata)
static irqreturn_t mpi3mr_isr(int irq, void *privdata)
{
struct mpi3mr_intr_info *intr_info = privdata;
struct mpi3mr_ioc *mrioc;
u16 midx;
int ret;
if (!intr_info)
return IRQ_NONE;
mrioc = intr_info->mrioc;
midx = intr_info->msix_index;
/* Call primary ISR routine */
ret = mpi3mr_isr_primary(irq, privdata);
@ -650,7 +646,7 @@ static irqreturn_t mpi3mr_isr(int irq, void *privdata)
!atomic_read(&intr_info->op_reply_q->pend_ios))
return ret;
disable_irq_nosync(pci_irq_vector(mrioc->pdev, midx));
disable_irq_nosync(intr_info->os_irq);
return IRQ_WAKE_THREAD;
}
@ -696,7 +692,7 @@ static irqreturn_t mpi3mr_isr_poll(int irq, void *privdata)
(num_op_reply < mrioc->max_host_ios));
intr_info->op_reply_q->enable_irq_poll = false;
enable_irq(pci_irq_vector(mrioc->pdev, midx));
enable_irq(intr_info->os_irq);
return IRQ_HANDLED;
}
@ -738,6 +734,7 @@ static inline int mpi3mr_request_irq(struct mpi3mr_ioc *mrioc, u16 index)
return retval;
}
intr_info->os_irq = pci_irq_vector(pdev, index);
return retval;
}