diff options
| author |   Marc Kleine-Budde <mkl@pengutronix.de> | 2014-02-28 15:30:18 +0100 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-03-03 12:41:27 +0100 |
| commit | 9b00b300e7bce032c467c36ca47fe2a776887fc2 (patch) | |
| tree | d66a93171f6a33c6e7000f731d7b58f368b5bcd2 /drivers/net/can/bfin_can.c | |
| parent | can: flexcan: flexcan_open(): fix error path if flexcan_chip_start() fails (diff) | |
| download | linux-dev-9b00b300e7bce032c467c36ca47fe2a776887fc2.tar.xz linux-dev-9b00b300e7bce032c467c36ca47fe2a776887fc2.zip | |
can: flexcan: fix transition from and to low power mode in chip_{en,dis}able
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.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/bfin_can.c')
0 files changed, 0 insertions, 0 deletions