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From 625b5c018f512e17512df16f57b6393b771f4996 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Tue, 30 Jun 2015 10:28:59 +0100
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Subject: [PATCH 093/222] i2c-bcm2708: Increase timeouts to allow larger
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transfers
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Use the timeout value provided by the I2C_TIMEOUT ioctl when waiting
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for completion. The default timeout is 1 second.
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See: https://github.com/raspberrypi/linux/issues/260
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---
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drivers/i2c/busses/i2c-bcm2708.c | 7 +++----
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1 file changed, 3 insertions(+), 4 deletions(-)
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--- a/drivers/i2c/busses/i2c-bcm2708.c
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+++ b/drivers/i2c/busses/i2c-bcm2708.c
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@@ -67,10 +67,9 @@
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#define BSC_S_DONE 0x00000002
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#define BSC_S_TA 0x00000001
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-#define I2C_TIMEOUT_MS 150
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-#define I2C_WAIT_LOOP_COUNT 40
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+#define I2C_WAIT_LOOP_COUNT 200
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-#define DRV_NAME "bcm2708_i2c"
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+#define DRV_NAME "bcm2708_i2c"
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static unsigned int baudrate = CONFIG_I2C_BCM2708_BAUDRATE;
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module_param(baudrate, uint, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
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@@ -305,7 +304,7 @@ static int bcm2708_i2c_master_xfer(struc
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goto error_timeout;
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}
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- ret = wait_for_completion_timeout(&bi->done, msecs_to_jiffies(I2C_TIMEOUT_MS));
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+ ret = wait_for_completion_timeout(&bi->done, adap->timeout);
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if (ret == 0) {
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dev_err(&adap->dev, "transfer timed out\n");
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goto error_timeout;
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