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| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-02-28 15:30:18 +0100 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-03-24 09:45:01 +0100 |
| commit | bd408b8c4c7f86022bd824eaf828f898e310cf12 (patch) | |
| tree | 8a3aabcda6532fc6a6ef01a41a7e144f668ab160 /lib/mpi/mpiutil.c | |
| parent | a822076cdfb8162652a799e8038606e3bf3b1cd4 (diff) | |
can: flexcan: fix transition from and to low power mode in chip_{en,dis}able
commit 9b00b300e7bce032c467c36ca47fe2a776887fc2 upstream.
In flexcan_chip_enable() and flexcan_chip_disable() fixed delays are used.
Experiments have shown that the transition from and to low power mode may take
several microseconds.
This patch adds a while loop which polls the Low Power Mode ACK bit (LPM_ACK)
that indicates a successfull mode change. If the function runs into a timeout a
error value is returned.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'lib/mpi/mpiutil.c')
0 files changed, 0 insertions, 0 deletions