From 906999c9b653dc27d22d9a7f53a5a6637c0e670e Mon Sep 17 00:00:00 2001 From: Nithin Dabilpuram Date: Wed, 25 Aug 2021 11:09:04 +0530 Subject: octeontx2-af: Change the order of queue work and interrupt disable Clear and disable interrupt before queueing work as there might be a chance that work gets completed on other core faster and interrupt enable as a part of the work completes before interrupt disable in the interrupt context. This leads to permanent disable of interrupt. Signed-off-by: Nithin Dabilpuram Signed-off-by: Sunil Goutham Signed-off-by: Geetha sowjanya Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/net/ethernet/marvell') diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c index 84f0aaa8665d..5bdeed250089 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c @@ -2447,11 +2447,12 @@ static void rvu_afvf_queue_flr_work(struct rvu *rvu, int start_vf, int numvfs) for (vf = 0; vf < numvfs; vf++) { if (!(intr & BIT_ULL(vf))) continue; - dev = vf + start_vf + rvu->hw->total_pfs; - queue_work(rvu->flr_wq, &rvu->flr_wrk[dev].work); /* Clear and disable the interrupt */ rvupf_write64(rvu, RVU_PF_VFFLR_INTX(reg), BIT_ULL(vf)); rvupf_write64(rvu, RVU_PF_VFFLR_INT_ENA_W1CX(reg), BIT_ULL(vf)); + + dev = vf + start_vf + rvu->hw->total_pfs; + queue_work(rvu->flr_wq, &rvu->flr_wrk[dev].work); } } @@ -2467,14 +2468,14 @@ static irqreturn_t rvu_flr_intr_handler(int irq, void *rvu_irq) for (pf = 0; pf < rvu->hw->total_pfs; pf++) { if (intr & (1ULL << pf)) { - /* PF is already dead do only AF related operations */ - queue_work(rvu->flr_wq, &rvu->flr_wrk[pf].work); /* clear interrupt */ rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_PFFLR_INT, BIT_ULL(pf)); /* Disable the interrupt */ rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_PFFLR_INT_ENA_W1C, BIT_ULL(pf)); + /* PF is already dead do only AF related operations */ + queue_work(rvu->flr_wq, &rvu->flr_wrk[pf].work); } } -- cgit v1.2.3