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| author |   John Greene <jogreene@redhat.com> | 2012-12-19 09:47:48 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-12-19 14:30:59 -0800 |
| commit | 83c34fd00d0c3989466e95808bf12af9bf87e383 (patch) | |
| tree | 477e1bde4443e5708f4c1c7885c9c552dcd7d4d6 /drivers/atm | |
| parent | net: qmi_wwan: add ZTE MF880 (diff) | |
| download | linux-dev-83c34fd00d0c3989466e95808bf12af9bf87e383.tar.xz linux-dev-83c34fd00d0c3989466e95808bf12af9bf87e383.zip | |
8139cp: Prevent dev_close/cp_interrupt race on MTU change
commit: cb64edb6b89491edfdbae52ba7db9a8b8391d339 upstream
Above commit may introduce a race between cp_interrupt and dev_close
/ change MTU / dev_open up state. Changes cp_interrupt to tolerate
this. Change spin_locking in cp_interrupt to avoid possible
but unobserved race.
Reported-by: "Francois Romieu" <romieu@fr.zoreil.com>
Tested on virtual hardware, Tx MTU size up to 4096, max tx payload
was ping -s 4068 for MTU of 4096. No real hardware, need test
assist.
Signed-off-by: "John Greene" <jogreene@redhat.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: "David Woodhouse" <David.Woodhouse@intel.com>
Tested-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm')
0 files changed, 0 insertions, 0 deletions