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| author | Russ Gorby <russ.gorby@intel.com> | 2012-08-13 13:44:40 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-16 12:03:30 -0700 |
| commit | 5e44708f75b0f8712da715d6babb0c21089b2317 (patch) | |
| tree | e5f4f2ecd25649b5d47589ba2cf919c4e92ed222 /drivers/atm | |
| parent | 10c6c383e43565c9c6ec07ff8eb2825f8091bdf0 (diff) | |
| download | op-kernel-dev-5e44708f75b0f8712da715d6babb0c21089b2317.zip op-kernel-dev-5e44708f75b0f8712da715d6babb0c21089b2317.tar.gz | |
n_gsm: added interlocking for gsm_data_lock for certain code paths
There were some locking holes in the management of the MUX's
message queue for 2 code paths:
1) gsmld_write_wakeup
2) receipt of CMD_FCON flow-control message
In both cases gsm_data_kick is called w/o locking so it can collide
with other other instances of gsm_data_kick (pulling messages tx_tail)
or potentially other instances of __gsm_data_queu (adding messages to tx_head)
Changed to take the tx_lock in these 2 cases
Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Tested-by: Yin, Fengwei <fengwei.yin@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Riding School <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/atm')
0 files changed, 0 insertions, 0 deletions
