From cd0983c7f8809d685bc57eda1f11cc1cdb67b9ac Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 9 Sep 2024 11:21:04 +0000 Subject: can: rockchip_canfd: rkcanfd_timestamp_init(): rework delay calculation Rework the delay calculation to only require a single 64-bit division. Signed-off-by: Arnd Bergmann [mkl: port to on-top of existing 32-bit division fix] Link: https://patch.msgid.link/20240911-can-rockchip_canfd-fixes-v1-1-5ce385b5ab10@pengutronix.de Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rockchip/rockchip_canfd-timestamp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/rockchip/rockchip_canfd-timestamp.c b/drivers/net/can/rockchip/rockchip_canfd-timestamp.c index fb1a8f4e6217..43d4b5721812 100644 --- a/drivers/net/can/rockchip/rockchip_canfd-timestamp.c +++ b/drivers/net/can/rockchip/rockchip_canfd-timestamp.c @@ -71,8 +71,8 @@ void rkcanfd_timestamp_init(struct rkcanfd_priv *priv) max_cycles = div_u64(ULLONG_MAX, cc->mult); max_cycles = min(max_cycles, cc->mask); - work_delay_ns = div_u64(clocksource_cyc2ns(max_cycles, cc->mult, cc->shift), 3); - priv->work_delay_jiffies = nsecs_to_jiffies(work_delay_ns); + work_delay_ns = clocksource_cyc2ns(max_cycles, cc->mult, cc->shift); + priv->work_delay_jiffies = div_u64(work_delay_ns, 3u * NSEC_PER_SEC / HZ); INIT_DELAYED_WORK(&priv->timestamp, rkcanfd_timestamp_work); netdev_dbg(priv->ndev, "clock=%lu.%02luMHz bitrate=%lu.%02luMBit/s div=%u rate=%lu.%02luMHz mult=%u shift=%u delay=%lus\n", -- cgit From a63e10462af67257b99b5330b32d1a47583803e2 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Wed, 11 Sep 2024 10:09:48 +0200 Subject: can: rockchip_canfd: rkcanfd_handle_error_int_reg_ec(): fix decoding of error code register Probably due to a copy/paste error rkcanfd_handle_error_int_reg_ec() checks twice if the RKCANFD_REG_ERROR_CODE_TX_ACK_EOF bit is set in reg_ec. Keep the correct check for RKCANFD_REG_ERROR_CODE_TX_ACK_EOF and remove the superfluous one. Reported-by: Dan Carpenter Closes: https://patch.msgid.link/9a46d10d-e4e3-40a5-8fb6-f4637959f124@stanley.mountain Fixes: ff60bfbaf67f ("can: rockchip_canfd: add driver for Rockchip CAN-FD controller") Link: https://patch.msgid.link/20240911-can-rockchip_canfd-fixes-v1-2-5ce385b5ab10@pengutronix.de Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rockchip/rockchip_canfd-core.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/net/can/rockchip/rockchip_canfd-core.c b/drivers/net/can/rockchip/rockchip_canfd-core.c index 6883153e8fc1..df18c85fc078 100644 --- a/drivers/net/can/rockchip/rockchip_canfd-core.c +++ b/drivers/net/can/rockchip/rockchip_canfd-core.c @@ -491,11 +491,9 @@ rkcanfd_handle_error_int_reg_ec(struct rkcanfd_priv *priv, struct can_frame *cf, else if (reg_ec & RKCANFD_REG_ERROR_CODE_TX_CRC) cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ; else if (reg_ec & RKCANFD_REG_ERROR_CODE_TX_ACK_EOF) - cf->data[3] = CAN_ERR_PROT_LOC_ACK; + cf->data[3] = CAN_ERR_PROT_LOC_ACK_DEL; else if (reg_ec & RKCANFD_REG_ERROR_CODE_TX_ACK) cf->data[3] = CAN_ERR_PROT_LOC_ACK; - else if (reg_ec & RKCANFD_REG_ERROR_CODE_TX_ACK_EOF) - cf->data[3] = CAN_ERR_PROT_LOC_ACK_DEL; /* RKCANFD_REG_ERROR_CODE_TX_ERROR */ else if (reg_ec & RKCANFD_REG_ERROR_CODE_TX_OVERLOAD) cf->data[2] |= CAN_ERR_PROT_OVERLOAD; -- cgit