fm10k: avoid possible null pointer dereference in fm10k_update_stats

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It's currently possible for fm10k_update_stats to be called during the
window when we go down and the rings are removed. This can result in
a null pointer dereference. In fm10k_get_stats64 we work around this by
using ACCESS_ONCE and a null pointer check inside the loop. Use this
same flow in the fm10k_update_stats to avoid the potential null pointer.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Jacob Keller 2016-06-03 15:42:12 -07:00 • committed by Jeff Kirsher

parent 1b00c6c064

commit b624714bc9

1 changed files with 8 additions and 2 deletions

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drivers/net/ethernet/intel/fm10k/fm10k_pci.c

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