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spi: spi-fsl-dspi: Remove impossible to reach error check 

dspi->devtype_data is under the total control of the driver. Therefore,
a bad value is a driver bug and checking it at runtime (and during an
ISR, at that!) is pointless.

The second "else if" check is only for clarity (instead of a broader
"else") in case other transfer modes are added in the future. But the
printing is dead code and can be removed.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20190822211514.19288-4-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vladimir Oltean 2019-08-23 00:15:12 +03:00 committed by Mark Brown
parent 37b4100180
commit 1eaeba7073
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GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 20 deletions
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24
drivers/spi/spi-fsl-dspi.c
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@ -670,18 +670,10 @@ static irqreturn_t dspi_interrupt(int irq, void *dev_id)
msg->actual_length += spi_tcnt * dspi->bytes_per_word;
trans_mode = dspi->devtype_data->trans_mode;
switch (trans_mode) {
case DSPI_EOQ_MODE:
if (trans_mode == DSPI_EOQ_MODE)
dspi_eoq_read(dspi);
break;
case DSPI_TCFQ_MODE:
else if (trans_mode == DSPI_TCFQ_MODE)
dspi_tcfq_read(dspi);
break;
default:
dev_err(&dspi->pdev->dev, "unsupported trans_mode %u\n",
trans_mode);
return IRQ_HANDLED;
}
if (!dspi->len) {
dspi->waitflags = 1;
@ -689,18 +681,10 @@ static irqreturn_t dspi_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
switch (trans_mode) {
case DSPI_EOQ_MODE:
if (trans_mode == DSPI_EOQ_MODE)
dspi_eoq_write(dspi);
break;
case DSPI_TCFQ_MODE:
else if (trans_mode == DSPI_TCFQ_MODE)
dspi_tcfq_write(dspi);
break;
default:
dev_err(&dspi->pdev->dev,
"unsupported trans_mode %u\n",
trans_mode);
}
return IRQ_HANDLED;
}