cxgb4: dont touch blocked freelist bitmap after free

When adapter init fails, the blocked freelist bitmap is already freed
up and should not be touched. So, move the bitmap zeroing closer to
where it was successfully allocated. Also handle adapter init failure
unwind path immediately and avoid setting up RDMA memory windows.

Fixes: 5b377d114f2b ("cxgb4: Add debugfs facility to inject FL starvation")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index dbf9a0e6601d1d41d046c7b07a932c729a2d7459..710cb00ce3a3b88331d21d1b9234342f32106c18 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -5068,6 +5068,7 @@ static int adap_init0(struct adapter *adap, int vpd_skip)
                ret = -ENOMEM;
                goto bye;
        }
+       bitmap_zero(adap->sge.blocked_fl, adap->sge.egr_sz);
 #endif
 
        params[0] = FW_PARAM_PFVF(CLIP_START);
@@ -6788,13 +6789,11 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        setup_memwin(adapter);
        err = adap_init0(adapter, 0);
-#ifdef CONFIG_DEBUG_FS
-       bitmap_zero(adapter->sge.blocked_fl, adapter->sge.egr_sz);
-#endif
-       setup_memwin_rdma(adapter);
        if (err)
                goto out_unmap_bar;
 
+       setup_memwin_rdma(adapter);
+
        /* configure SGE_STAT_CFG_A to read WC stats */
        if (!is_t4(adapter->params.chip))
                t4_write_reg(adapter, SGE_STAT_CFG_A, STATSOURCE_T5_V(7) |