[PATCH net-next v2 06/13] bnxt_en: Fix suspend/resume path on 57500 chips
From: Michael Chan <michael.chan@broadcom.com>
Date: 2019-11-24 03:31:27
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Vasundhara Volam <redacted> Driver calls HWRM_FUNC_RESET firmware call while resuming the device which clears the context memory backing store. Because of which allocating firmware resources would eventually fail. Fix it by freeing all context memory during suspend and reallocate the memory during resume. Call bnxt_hwrm_queue_qportcfg() in resume path. This firmware call is needed on the 57500 chips so that firmware will set up the proper queue mapping in relation to the context memory. Signed-off-by: Vasundhara Volam <redacted> Signed-off-by: Michael Chan <michael.chan@broadcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 69d7ab1..6a12ab5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c@@ -11916,6 +11916,9 @@ static int bnxt_suspend(struct device *device) } bnxt_hwrm_func_drv_unrgtr(bp); pci_disable_device(bp->pdev); + bnxt_free_ctx_mem(bp); + kfree(bp->ctx); + bp->ctx = NULL; rtnl_unlock(); return rc; }
@@ -11944,6 +11947,17 @@ static int bnxt_resume(struct device *device) goto resume_exit; } + if (bnxt_hwrm_queue_qportcfg(bp)) { + rc = -ENODEV; + goto resume_exit; + } + + if (bp->hwrm_spec_code >= 0x10803) { + if (bnxt_alloc_ctx_mem(bp)) { + rc = -ENODEV; + goto resume_exit; + } + } if (BNXT_NEW_RM(bp)) bnxt_hwrm_func_resc_qcaps(bp, false);
--
2.5.1