mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-02-15 04:42:02 +00:00
27 lines
957 B
Diff
27 lines
957 B
Diff
From b2857bbd0a068eb562a4db204de7000684039945 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) {
|