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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> | 2012-10-07 08:27:25 -0700 |
| commit | 9ce5f868f54045589dd0f90e6b502efb1becd88d (patch) | |
| tree | eef188b227a154ec98559f40bb10c162f1e3f981 /Documentation/PCI | |
| parent | 9c1ce83c1250a3ad4c2d131d59295561b09efe83 (diff) | |
| download | kernel_samsung_crespo-9ce5f868f54045589dd0f90e6b502efb1becd88d.zip kernel_samsung_crespo-9ce5f868f54045589dd0f90e6b502efb1becd88d.tar.gz kernel_samsung_crespo-9ce5f868f54045589dd0f90e6b502efb1becd88d.tar.bz2 | |
n_gsm: added interlocking for gsm_data_lock for certain code paths
commit 5e44708f75b0f8712da715d6babb0c21089b2317 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/PCI')
0 files changed, 0 insertions, 0 deletions