PetervdPerk-NXP commented on issue #7812:
URL: https://github.com/apache/nuttx/issues/7812#issuecomment-1340988130
I've found the workaround to the transmit problem it seems with new IOB api
we've to explicitely set d_len to 0. Not sure about the other drivers that are
affected by this.
```patch
diff --git a/arch/arm/src/s32k3xx/s32k3xx_flexcan.c
b/arch/arm/src/s32k3xx/s32k3xx_flexcan.c
index 3e17b52ee0..d0ac32894d 100644
--- a/arch/arm/src/s32k3xx/s32k3xx_flexcan.c
+++ b/arch/arm/src/s32k3xx/s32k3xx_flexcan.c
@@ -905,6 +905,8 @@ static int s32k3xx_transmit(struct s32k3xx_driver_s
*priv)
mb->cs = cs; /* Go. */
+ priv->dev.d_len = 0;
+
regval = getreg32(priv->base + S32K3XX_CAN_IMASK1_OFFSET);
regval |= mb_bit;
putreg32(regval, priv->base + S32K3XX_CAN_IMASK1_OFFSET);
```
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