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From 11667799f99dca096d4d92e63b7823db2a8f8779 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 30 Jun 2015 10:28:59 +0100
Subject: [PATCH 093/121] i2c-bcm2708: Increase timeouts to allow larger
transfers
Use the timeout value provided by the I2C_TIMEOUT ioctl when waiting
for completion. The default timeout is 1 second.
See: https://github.com/raspberrypi/linux/issues/260
---
drivers/i2c/busses/i2c-bcm2708.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/drivers/i2c/busses/i2c-bcm2708.c
+++ b/drivers/i2c/busses/i2c-bcm2708.c
@@ -67,10 +67,9 @@
#define BSC_S_DONE 0x00000002
#define BSC_S_TA 0x00000001
-#define I2C_TIMEOUT_MS 150
-#define I2C_WAIT_LOOP_COUNT 40
+#define I2C_WAIT_LOOP_COUNT 200
-#define DRV_NAME "bcm2708_i2c"
+#define DRV_NAME "bcm2708_i2c"
static unsigned int baudrate = CONFIG_I2C_BCM2708_BAUDRATE;
module_param(baudrate, uint, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
@@ -305,7 +304,7 @@ static int bcm2708_i2c_master_xfer(struc
goto error_timeout;
}
- ret = wait_for_completion_timeout(&bi->done, msecs_to_jiffies(I2C_TIMEOUT_MS));
+ ret = wait_for_completion_timeout(&bi->done, adap->timeout);
if (ret == 0) {
dev_err(&adap->dev, "transfer timed out\n");
goto error_timeout;
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