arch/arm64/src/imx9/imx9_lpi2c.c: Ignore spurious RX interrupts

Check remaining data count, just in case an extra RX interrupt occurs after receiving a message Signed-off-by: Jukka Laitinen <[email protected]>
tiiuae · Sep 13, 2024 · 1826648 · 1826648
1 parent 07eb70f
commit 1826648
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/arm64/src/imx9/imx9_lpi2c.c b/arch/arm64/src/imx9/imx9_lpi2c.c
@@ -1576,7 +1576,7 @@ static int imx9_lpi2c_isr_process(struct imx9_lpi2c_priv_s *priv)
 
   /* Check if there are received bytes */
 
-  else if ((status & LPI2C_MSR_RDF) != 0)
+  else if ((status & LPI2C_MSR_RDF) != 0 && priv->dcnt > 0)
     {
       imx9_lpi2c_traceevent(priv, I2CEVENT_RCVBYTE, priv->dcnt);