diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0093-i2c-bcm2708-Increase-timeouts-to-allow-larger-transf.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0093-i2c-bcm2708-Increase-timeouts-to-allow-larger-transf.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0093-i2c-bcm2708-Increase-timeouts-to-allow-larger-transf.patch b/target/linux/brcm2708/patches-4.1/0093-i2c-bcm2708-Increase-timeouts-to-allow-larger-transf.patch new file mode 100644 index 0000000000..63078b86ff --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0093-i2c-bcm2708-Increase-timeouts-to-allow-larger-transf.patch @@ -0,0 +1,38 @@ +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; |