2009-02-09 03:36:13 +08:00
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--- a/drivers/serial/pxa.c
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+++ b/drivers/serial/pxa.c
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2008-04-28 00:56:19 +08:00
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@@ -235,15 +235,19 @@ static inline irqreturn_t serial_pxa_irq
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struct uart_pxa_port *up = dev_id;
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unsigned int iir, lsr;
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+ serial_out(up, UART_MCR, serial_in(up, UART_MCR) & ~UART_MCR_RTS); // Clear RTS
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iir = serial_in(up, UART_IIR);
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if (iir & UART_IIR_NO_INT)
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- return IRQ_NONE;
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+ {
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+ //printk(KERN_WARNING "serial_pxa_irq: odd -- interrupt triggered, but no interrupt in IIR: %08x\n",iir);
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+ }
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lsr = serial_in(up, UART_LSR);
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if (lsr & UART_LSR_DR)
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receive_chars(up, &lsr);
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check_modem_status(up);
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if (lsr & UART_LSR_THRE)
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transmit_chars(up);
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+ serial_out(up, UART_MCR, serial_in(up, UART_MCR) | UART_MCR_RTS); // Assert RTS
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return IRQ_HANDLED;
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}
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