>-----Original Message----- >From: linux-scsi-owner@xxxxxxxxxxxxxxx [mailto:linux-scsi- >owner@xxxxxxxxxxxxxxx] On Behalf Of Lars-Peter Clausen >Sent: Friday, March 04, 2016 3:45 PM >To: James E.J. Bottomley; Martin K. Petersen >Cc: Sathya Prakash; Chaitra P B; Suganath Prabu Subramani; Jitendra Bhivare; >linux-scsi@xxxxxxxxxxxxxxx; MPT-FusionLinux.pdl@xxxxxxxxxxxx; Lars-Peter >Clausen >Subject: [PATCH resend 1/2] be2iscsi: Remove unnecessary synchronize_irq() >before free_irq() > >Calling synchronize_irq() right before free_irq() is quite useless. On one hand the >IRQ can easily fire again before free_irq() is entered, on the other hand free_irq() >itself calls synchronize_irq() internally (in a race condition free way), before any >state associated with the IRQ is freed. > >Patch was generated using the following semantic patch: >// <smpl> >@@ >expression irq; >@@ >-synchronize_irq(irq); > free_irq(irq, ...); >// </smpl> > >Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx> >--- > drivers/scsi/be2iscsi/be_main.c | 5 +---- > 1 file changed, 1 insertion(+), 4 deletions(-) > >diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c >index b51e726..e89a0f8d 100644 >--- a/drivers/scsi/be2iscsi/be_main.c >+++ b/drivers/scsi/be2iscsi/be_main.c >@@ -5303,15 +5303,12 @@ static void beiscsi_quiesce(struct beiscsi_hba *phba, > if (phba->msix_enabled) { > for (i = 0; i <= phba->num_cpus; i++) { > msix_vec = phba->msix_entries[i].vector; >- synchronize_irq(msix_vec); > free_irq(msix_vec, &phwi_context->be_eq[i]); > kfree(phba->msi_name[i]); > } > } else >- if (phba->pcidev->irq) { >- synchronize_irq(phba->pcidev->irq); >+ if (phba->pcidev->irq) > free_irq(phba->pcidev->irq, phba); >- } > pci_disable_msix(phba->pcidev); > cancel_delayed_work_sync(&phba->beiscsi_hw_check_task); > >-- >2.1.4 Reviewed-by: Jitendra Bhivare <jitendra.bhivare@xxxxxxxxxxxx> Thanks, JB -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
