Revision 1d5a474240407c38ca8c7484a656ee39f585399c authored by Martin Habets on 02 January 2022, 08:41:22 UTC, committed by Jakub Kicinski on 05 January 2022, 02:14:21 UTC
The RX page_ring is an optional feature that improves performance. When allocation fails the driver can still function, but possibly with a lower bandwidth. Guard against dereferencing a NULL page_ring. Fixes: 2768935a4660 ("sfc: reuse pages to avoid DMA mapping/unmapping costs") Signed-off-by: Martin Habets <habetsm.xilinx@gmail.com> Reported-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Link: https://lore.kernel.org/r/164111288276.5798.10330502993729113868.stgit@palantir17.mph.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1 parent 6f89ecf
File | Mode | Size |
---|---|---|
irq | ||
assoc_array.rst | -rw-r--r-- | 20.8 KB |
boot-time-mm.rst | -rw-r--r-- | 1.4 KB |
bus-virt-phys-mapping.rst | -rw-r--r-- | 8.0 KB |
cachetlb.rst | -rw-r--r-- | 16.8 KB |
circular-buffers.rst | -rw-r--r-- | 8.2 KB |
cpu_hotplug.rst | -rw-r--r-- | 29.3 KB |
debug-objects.rst | -rw-r--r-- | 11.3 KB |
debugging-via-ohci1394.rst | -rw-r--r-- | 7.5 KB |
dma-api-howto.rst | -rw-r--r-- | 32.8 KB |
dma-api.rst | -rw-r--r-- | 30.2 KB |
dma-attributes.rst | -rw-r--r-- | 5.7 KB |
dma-isa-lpc.rst | -rw-r--r-- | 5.1 KB |
errseq.rst | -rw-r--r-- | 6.4 KB |
genalloc.rst | -rw-r--r-- | 5.7 KB |
generic-radix-tree.rst | -rw-r--r-- | 323 bytes |
genericirq.rst | -rw-r--r-- | 12.5 KB |
gfp_mask-from-fs-io.rst | -rw-r--r-- | 3.0 KB |
idr.rst | -rw-r--r-- | 2.8 KB |
index.rst | -rw-r--r-- | 2.1 KB |
kernel-api.rst | -rw-r--r-- | 8.0 KB |
kobject.rst | -rw-r--r-- | 18.9 KB |
kref.rst | -rw-r--r-- | 9.1 KB |
librs.rst | -rw-r--r-- | 5.9 KB |
local_ops.rst | -rw-r--r-- | 7.2 KB |
memory-allocation.rst | -rw-r--r-- | 8.5 KB |
memory-hotplug.rst | -rw-r--r-- | 4.5 KB |
mm-api.rst | -rw-r--r-- | 1.9 KB |
packing.rst | -rw-r--r-- | 7.3 KB |
padata.rst | -rw-r--r-- | 7.5 KB |
pin_user_pages.rst | -rw-r--r-- | 12.1 KB |
printk-basics.rst | -rw-r--r-- | 4.9 KB |
printk-formats.rst | -rw-r--r-- | 17.3 KB |
protection-keys.rst | -rw-r--r-- | 3.4 KB |
rbtree.rst | -rw-r--r-- | 14.8 KB |
refcount-vs-atomic.rst | -rw-r--r-- | 5.6 KB |
symbol-namespaces.rst | -rw-r--r-- | 6.8 KB |
this_cpu_ops.rst | -rw-r--r-- | 11.2 KB |
timekeeping.rst | -rw-r--r-- | 7.2 KB |
tracepoint.rst | -rw-r--r-- | 1.5 KB |
unaligned-memory-access.rst | -rw-r--r-- | 10.4 KB |
workqueue.rst | -rw-r--r-- | 15.8 KB |
xarray.rst | -rw-r--r-- | 20.6 KB |
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...