diff options
Diffstat (limited to 'kernel/drivers/net/ethernet/intel/fm10k/fm10k_vf.c')
| -rw-r--r-- | kernel/drivers/net/ethernet/intel/fm10k/fm10k_vf.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/kernel/drivers/net/ethernet/intel/fm10k/fm10k_vf.c b/kernel/drivers/net/ethernet/intel/fm10k/fm10k_vf.c index 36c8b0aa0..d512575c3 100644 --- a/kernel/drivers/net/ethernet/intel/fm10k/fm10k_vf.c +++ b/kernel/drivers/net/ethernet/intel/fm10k/fm10k_vf.c @@ -103,7 +103,14 @@ static s32 fm10k_init_hw_vf(struct fm10k_hw *hw) s32 err; u16 i; - /* assume we always have at least 1 queue */ + /* verify we have at least 1 queue */ + if (!~fm10k_read_reg(hw, FM10K_TXQCTL(0)) || + !~fm10k_read_reg(hw, FM10K_RXQCTL(0))) { + err = FM10K_ERR_NO_RESOURCES; + goto reset_max_queues; + } + + /* determine how many queues we have */ for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) { /* verify the Descriptor cache offsets are increasing */ tqdloc = ~fm10k_read_reg(hw, FM10K_TQDLOC(i)); @@ -119,7 +126,7 @@ static s32 fm10k_init_hw_vf(struct fm10k_hw *hw) /* shut down queues we own and reset DMA configuration */ err = fm10k_disable_queues_generic(hw, i); if (err) - return err; + goto reset_max_queues; /* record maximum queue count */ hw->mac.max_queues = i; @@ -129,6 +136,11 @@ static s32 fm10k_init_hw_vf(struct fm10k_hw *hw) FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT; return 0; + +reset_max_queues: + hw->mac.max_queues = 0; + + return err; } /* This structure defines the attibutes to be parsed below */ |