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| author | Stefan Agner <stefan@agner.ch> | 2015-05-18 17:24:34 +0200 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2015-08-04 17:51:29 +0200 |
| commit | a4985acb14bbc320c2011266232911052cb259c1 (patch) | |
| tree | 4f33c078d102df407d12b3d36f167cf2cd8e1973 /drivers/dma | |
| parent | ef647356c826291dbe5be6685357cbbe532d2651 (diff) | |
can: mcp251x: fix resume when device is down
If a valid power regulator or a dummy regulator is used (which
happens to be the case when no regulator is specified), restart_work
is queued no matter whether the device was running or not at suspend
time. Since work queues get initialized in the ndo_open callback,
resuming leads to a NULL pointer exception.
Reverse exactly the steps executed at suspend time:
- Enable the power regulator in any case
- Enable the transceiver regulator if the device was running, even in
case we have a power regulator
- Queue restart_work only in case the device was running
Fixes: bf66f3736a94 ("can: mcp251x: Move to threaded interrupts instead of workqueues.")
Diffstat (limited to 'drivers/dma')
0 files changed, 0 insertions, 0 deletions