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hw/serial.c: fix THRE interrupt clearing

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UART_IIR_THRI is not a mask, but a possible value for the IIR ID.
Use UART_IIR_ID to extract this value.

Broken by commit 71e605f803.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2010-03-06 22:19:53 +01:00
parent 2f4f22bd44
commit cdee7bdfee
1 changed files with 1 additions and 1 deletions
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2
hw/serial.c
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@ -541,7 +541,7 @@ static uint32_t serial_ioport_read(void *opaque, uint32_t addr)
break;
case 2:
ret = s->iir;
if (ret & UART_IIR_THRI) {
if ((ret & UART_IIR_ID) == UART_IIR_THRI) {
s->thr_ipending = 0;
serial_update_irq(s);
}