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can: flexcan: disable completely the ECC mechanism

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The ECC (memory error detection and correction) mechanism can be
activated or not, controlled by the ECCDIS bit in CAN_MECR. When
disabled, updates on indications and reporting registers are stopped.
So if want to disable ECC completely, had better assert ECCDIS bit, not
just mask the related interrupts.

Fixes: cdce844865be ("can: flexcan: add vf610 support for FlexCAN")
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Joakim Zhang
2019-08-15 08:00:26 +00:00
committed by Marc Kleine-Budde
parent 3759739426
commit 5e269324db
1 changed files with 1 additions and 0 deletions
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drivers/net/can/flexcan.c
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@ -1188,6 +1188,7 @@ static int flexcan_chip_start(struct net_device *dev)
reg_mecr = priv->read(&regs->mecr);
reg_mecr &= ~FLEXCAN_MECR_ECRWRDIS;
priv->write(reg_mecr, &regs->mecr);
reg_mecr |= FLEXCAN_MECR_ECCDIS;
reg_mecr &= ~(FLEXCAN_MECR_NCEFAFRZ | FLEXCAN_MECR_HANCEI_MSK |
FLEXCAN_MECR_FANCEI_MSK);
priv->write(reg_mecr, &regs->mecr);