Re: [PATCH 1/3] dl2k: Handle memory allocation errors in alloc_list

From: Francois Romieu
Date: Tue Nov 17 2015 - 17:54:15 EST

Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx> :
> If memory allocation fails in alloc_list(), free the already allocated
> memory and return -ENODEV. In rio_open(), call alloc_list() first and
> abort if it fails. Move HW access (set RFDListPtr) out ot alloc_list().
> Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>

ENODEV vs ENOMEM aside, it's ok with me.

The driver may avoid depleting the receive ring when netdev_alloc_skb_ip_align
fails in receive_packet (drop and increase stats->rx_dropped).

Then you may replace the pci_* dma helpers with the plain dma_* ones (they
can fail).

And perform a plain napi conversion.

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