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From f14a14edf12354103e28e8b0336614385766b30a Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Tue, 23 May 2023 14:14:05 +0100
Subject: [PATCH] i2c-bcm2835: Do not abort transfers on ERR if still
active
If a transaction is aborted immediately on ERR being reported,
then the bus is not returned to the STOP condition, and devices
generally get very upset.
Handle the ERR and CLKT conditions only when TA is not set.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/i2c/busses/i2c-bcm2835.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/i2c/busses/i2c-bcm2835.c
+++ b/drivers/i2c/busses/i2c-bcm2835.c
@@ -385,7 +385,7 @@ static irqreturn_t bcm2835_i2c_isr(int t
bcm2835_debug_add(i2c_dev, val);
err = val & (BCM2835_I2C_S_CLKT | BCM2835_I2C_S_ERR);
- if (err)
+ if (err && !(val & BCM2835_I2C_S_TA))
i2c_dev->msg_err = err;
if (val & BCM2835_I2C_S_DONE) {
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