Hi, another little fix:
EP93xx User's Manual -> Synchronous Serial Port -> Registers
SSPIIR description:
"Read Only
Note: A write to this register clears the receive overrun interrupt,
regardless of the data
value written."
It doesn't affect the RIS/TIS ones, which are caused by the state of the device.
so
static irqreturn_t ep93xx_spi_interrupt(int irq, void *dev_id)
{
...
if (!(irq_status & (SSPIIR_RORIS | SSPIIR_TIS | SSPIIR_RIS)))
return IRQ_NONE; /* not for us */
- /* clear the interrupt */
- ep93xx_spi_write_u8(espi, SSPICR, 0);
/*
* If we got ROR (receive overrun) interrupt we know that something is
* wrong. Just abort the message.
*/
if (unlikely(irq_status & SSPIIR_RORIS)) {
+ /* clear the overrun interrupt */
+ ep93xx_spi_write_u8(espi, SSPICR, 0);
dev_warn(&espi->pdev->dev,
"receive overrun, aborting the message\n");
espi->current_msg->status = -EIO;
} else {
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