On OMAP4 we were writing 1 to IRQENABLE_CLR which cleared only the arbitration lost interrupt. The patch intends to fix the same by writing 0 to the IE register clearing all interrupts. This is based on the work done by Vikram Pandita <vikram.pandita@xxxxxx>. The changes from the original patch ... - Does not use the IRQENABLE_CLR register to clear as it is not mentioned to be legacy register IRQENABLE_CLR helps in atomically setting/clearing specific interrupts, instead use the OMAP_I2C_IE_REG as we are clearing all interrupts. Cc: Vikram Pandita <vikram.pandita@xxxxxx> Signed-off-by: Shubhrajyoti D <shubhrajyoti@xxxxxx> --- Original patch can be found here: http://git.omapzoom.org/?p=kernel/omap.git;a=commit;h=41049d62e146e0fafe2fac0a31be566b3bbc9149 drivers/i2c/busses/i2c-omap.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index e0733b7..11f6c9b 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -297,10 +297,8 @@ static void omap_i2c_idle(struct omap_i2c_dev *dev) pdata = dev->dev->platform_data; dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG); - if (pdata->rev == OMAP_I2C_IP_VERSION_2) - omap_i2c_write_reg(dev, OMAP_I2C_IP_V2_IRQENABLE_CLR, 1); - else - omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0); + + omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0); if (dev->rev < OMAP_I2C_OMAP1_REV_2) { iv = omap_i2c_read_reg(dev, OMAP_I2C_IV_REG); /* Read clears */ -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
