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| author | Gao Feng <fgao@ikuai8.com> | 2016-08-25 03:45:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-08-26 02:02:48 +0200 |
| commit | b628d611a2a53858263fc419dba552f32431dba4 (patch) | |
| tree | a0f36ccc5eba2cc45525c0bd55c7d72b6a1db79b /drivers/net/ethernet/hisilicon | |
| parent | i40e: Change some init flow for the client (diff) | |
| download | linux-b628d611a2a53858263fc419dba552f32431dba4.tar.xz linux-b628d611a2a53858263fc419dba552f32431dba4.zip | |
8139cp: Fix one possible deadloop in cp_rx_poll
When cp_rx_poll does not get enough packet, it will check the rx
interrupt status again. If so, it will jumpt to rx_status_loop again.
But the goto jump resets the rx variable as zero too.
As a result, it causes one possible deadloop. Assume this case,
rx_status_loop only gets the packet count which is less than budget,
and (cpr16(IntrStatus) & cp_rx_intr_mask) condition is always true.
It causes the deadloop happens and system is blocked.
Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/hisilicon')
0 files changed, 0 insertions, 0 deletions