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| author | Juergen Lock <nox@jelal.kn-bremen.de> | 2009-09-12 18:52:22 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2009-09-16 20:58:56 +0200 |
| commit | 2d6ee8e7e17227d5eb8c6e9a054dd88d5b37c5ae (patch) | |
| tree | 21303174f38b3483c7a8df4df989a79eed21b4c0 /hw | |
| parent | e5934d333f0a1a8d1a3f05c0b4a6447b01e21bef (diff) | |
| download | qemu-2d6ee8e7e17227d5eb8c6e9a054dd88d5b37c5ae.zip qemu-2d6ee8e7e17227d5eb8c6e9a054dd88d5b37c5ae.tar.gz qemu-2d6ee8e7e17227d5eb8c6e9a054dd88d5b37c5ae.tar.bz2 | |
qemu serial: lost tx irqs (affecting FreeBSD's new uart(4) driver)
Well one problem seems to be the rx condition,
... if ((s->ier & UART_IER_RDI) && (s->lsr & UART_LSR_DR))
is not enough to trigger an irq, yet still causes the following
conditions not to be checked anymore at all.
Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de>
Acked-by: Jan Kiszka <jan.kiszka@web.de>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/serial.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/hw/serial.c b/hw/serial.c index 1f4ce77..a22770f 100644 --- a/hw/serial.c +++ b/hw/serial.c @@ -197,12 +197,10 @@ static void serial_update_irq(SerialState *s) * this is not in the specification but is observed on existing * hardware. */ tmp_iir = UART_IIR_CTI; - } else if ((s->ier & UART_IER_RDI) && (s->lsr & UART_LSR_DR)) { - if (!(s->fcr & UART_FCR_FE)) { - tmp_iir = UART_IIR_RDI; - } else if (s->recv_fifo.count >= s->recv_fifo.itl) { - tmp_iir = UART_IIR_RDI; - } + } else if ((s->ier & UART_IER_RDI) && (s->lsr & UART_LSR_DR) && + (!(s->fcr & UART_FCR_FE) || + s->recv_fifo.count >= s->recv_fifo.itl)) { + tmp_iir = UART_IIR_RDI; } else if ((s->ier & UART_IER_THRI) && s->thr_ipending) { tmp_iir = UART_IIR_THRI; } else if ((s->ier & UART_IER_MSI) && (s->msr & UART_MSR_ANY_DELTA)) { |