We should check the ring allocations don't fail.
If we get a fail we need to clean up properly. The allocator assumes the
deallocator will be used on failure, but it isn't. Make sure the
right deallocator is always called and add a missing check against
fbr allocation failure.
[v2]: Correct check logic
Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---
drivers/staging/et131x/et131x.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c
index 6413500..cc600df 100644
--- a/drivers/staging/et131x/et131x.c
+++ b/drivers/staging/et131x/et131x.c
@@ -2124,7 +2124,11 @@ static int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
/* Alloc memory for the lookup table */
rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
+ if (rx_ring->fbr[0] == NULL)
+ return -ENOMEM;
rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
+ if (rx_ring->fbr[1] == NULL)
+ return -ENOMEM;
/* The first thing we will do is configure the sizes of the buffer
* rings. These will change based on jumbo packet support. Larger
@@ -2289,7 +2293,7 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
for (id = 0; id < NUM_FBRS; id++) {
fbr = rx_ring->fbr[id];
- if (!fbr->ring_virtaddr)
+ if (!fbr || !fbr->ring_virtaddr)
continue;
/* First the packet memory */
@@ -3591,6 +3595,7 @@ static int et131x_adapter_memory_alloc(struct et131x_adapter *adapter)
if (status) {
dev_err(&adapter->pdev->dev,
"et131x_tx_dma_memory_alloc FAILED\n");
+ et131x_tx_dma_memory_free(adapter);
return status;
}
/* Receive buffer memory allocation */
@@ -3598,7 +3603,7 @@ static int et131x_adapter_memory_alloc(struct et131x_adapter *adapter)
if (status) {
dev_err(&adapter->pdev->dev,
"et131x_rx_dma_memory_alloc FAILED\n");
- et131x_tx_dma_memory_free(adapter);
+ et131x_adapter_memory_free(adapter);
return status;
}
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