i2c: imx: fix imx driver to work though signal is pending
Interrupt a test application for I2C based mc13xxx driven touch panel, SIGINT, causes open event file descriptor to be closed, which in turn causes I2C activity to mask PMIC local interrupts. This eventually ends up in i2c_imx_bus_busy to wait for some busy flag to toggle, but while waiting it would find a signal pending and break. The final symptom is the device is not closed down cleanly and thus not reopenable. Do without check for pending signal. Signed-off-by: Oskar Schirmer <oskar@scara.com> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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@ -149,11 +149,6 @@ static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy)
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break;
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break;
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if (!for_busy && !(temp & I2SR_IBB))
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if (!for_busy && !(temp & I2SR_IBB))
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break;
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break;
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if (signal_pending(current)) {
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dev_dbg(&i2c_imx->adapter.dev,
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"<%s> I2C Interrupted\n", __func__);
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return -EINTR;
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}
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if (time_after(jiffies, orig_jiffies + msecs_to_jiffies(500))) {
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if (time_after(jiffies, orig_jiffies + msecs_to_jiffies(500))) {
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dev_dbg(&i2c_imx->adapter.dev,
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dev_dbg(&i2c_imx->adapter.dev,
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"<%s> I2C bus is busy\n", __func__);
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"<%s> I2C bus is busy\n", __func__);
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