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 |
|---|---|---|
| associativity.rst | -rw-r--r-- | 4.6 KB |
| booting.rst | -rw-r--r-- | 5.5 KB |
| bootwrapper.rst | -rw-r--r-- | 6.6 KB |
| cpu_families.rst | -rw-r--r-- | 6.2 KB |
| cpu_features.rst | -rw-r--r-- | 2.7 KB |
| cxl.rst | -rw-r--r-- | 15.8 KB |
| cxlflash.rst | -rw-r--r-- | 21.6 KB |
| dawr-power9.rst | -rw-r--r-- | 3.4 KB |
| dscr.rst | -rw-r--r-- | 3.4 KB |
| eeh-pci-error-recovery.rst | -rw-r--r-- | 14.9 KB |
| elfnote.rst | -rw-r--r-- | 1.3 KB |
| features.rst | -rw-r--r-- | 94 bytes |
| firmware-assisted-dump.rst | -rw-r--r-- | 16.8 KB |
| hvcs.rst | -rw-r--r-- | 22.5 KB |
| imc.rst | -rw-r--r-- | 6.3 KB |
| index.rst | -rw-r--r-- | 620 bytes |
| isa-versions.rst | -rw-r--r-- | 2.1 KB |
| kaslr-booke32.rst | -rw-r--r-- | 1.7 KB |
| mpc52xx.rst | -rw-r--r-- | 1.2 KB |
| papr_hcalls.rst | -rw-r--r-- | 14.4 KB |
| pci_iov_resource_on_powernv.rst | -rw-r--r-- | 14.6 KB |
| pmu-ebb.rst | -rw-r--r-- | 5.3 KB |
| ptrace.rst | -rw-r--r-- | 6.1 KB |
| qe_firmware.rst | -rw-r--r-- | 12.9 KB |
| syscall64-abi.rst | -rw-r--r-- | 6.4 KB |
| transactional_memory.rst | -rw-r--r-- | 11.1 KB |
| ultravisor.rst | -rw-r--r-- | 33.8 KB |
| vas-api.rst | -rw-r--r-- | 10.7 KB |
| vcpudispatch_stats.rst | -rw-r--r-- | 3.0 KB |
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