From: Michael Hernandez Date: Wed, 15 Feb 2017 23:37:21 +0000 (-0800) Subject: scsi: qla2xxx: Fix Regression introduced by pci_alloc_irq_vectors_affinity call. X-Git-Tag: v4.11-rc1~7^2~20 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=67f2db8792f96d8f7521461635d25f9c80245d80;p=karo-tx-linux.git scsi: qla2xxx: Fix Regression introduced by pci_alloc_irq_vectors_affinity call. For target mode, we need to increase minimum vectors value by one to account for ATIO queue. Following stack trace will be seen Call Trace: qla24xx_config_rings+0x15a/0x230 [qla2xxx] qla2x00_init_rings+0x1a1/0x3a0 [qla2xxx] qla2x00_restart_isp+0x5c/0x120 [qla2xxx] qla2x00_abort_isp+0x138/0x430 [qla2xxx] ? __schedule+0x260/0x580 qla2x00_do_dpc+0x3bc/0x920 [qla2xxx] ? qla2x00_relogin+0x290/0x290 [qla2xxx] ? schedule+0x3a/0xa0 ? qla2x00_relogin+0x290/0x290 [qla2xxx] kthread+0x103/0x140 ? __kthread_init_worker+0x40/0x40 ret_from_fork+0x29/0x40 RIP: qlt_24xx_config_rings+0x6c/0x90 [mkp: fixed Fixes: hash] Cc: Fixes: 17e5fc58588b ("scsi: qla2xxx: fix MSI-X vector affinity") Signed-off-by: Michael Hernandez Signed-off-by: Himanshu Madhani Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index edc2264db45b..87fc921ce391 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3015,14 +3015,17 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp) int i, ret; struct qla_msix_entry *qentry; scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); + int min_vecs = QLA_BASE_VECTORS; struct irq_affinity desc = { .pre_vectors = QLA_BASE_VECTORS, }; - if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) + if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) { desc.pre_vectors++; + min_vecs++; + } - ret = pci_alloc_irq_vectors_affinity(ha->pdev, QLA_BASE_VECTORS, + ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs, ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &desc);