Re: [Qemu-devel] [Qemu-trivial] [PATCH v2] serial-pci: Set prog interface field of pci config to 16550 compatible

[BALATON Zoltan]

On Thu, 8 May 2014, Michael Tokarev wrote:
27.02.2014 05:05, BALATON Zoltan wrote:
Shoudl we actually make it machine-specific, to keep even prog-if value
of these things the same as before for older machine types?  I dunno.
mst says we should, I think this is not a very important property to keep.

So what's the decision? Can it be taken as it is now or do you want any 
more changes? (If you want it version specific then please tell me how to 
do that or show me an example because I don't know how to do that.)

Regards,
BALATON Zoltan


Thanks,

/mjt

 v2: resubmission after pc-2.1 is added with the multiport case

 hw/char/serial-pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/char/serial-pci.c b/hw/char/serial-pci.c
index 991c99f..f3f5e07 100644
--- a/hw/char/serial-pci.c
+++ b/hw/char/serial-pci.c
@@ -60,6 +60,7 @@ static int serial_pci_init(PCIDevice *dev)
         return -1;
     }

+    pci->dev.config[PCI_CLASS_PROG] = 0x02; /* 16550 compatible */
     pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
     s->irq = pci_allocate_irq(&pci->dev);

@@ -101,6 +102,7 @@ static int multi_serial_pci_init(PCIDevice *dev)
     assert(pci->ports > 0);
     assert(pci->ports <= PCI_SERIAL_MAX_PORTS);

+    pci->dev.config[PCI_CLASS_PROG] = 0x02; /* 16550 compatible */
     pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
     memory_region_init(&pci->iobar, OBJECT(pci), "multiserial", 8 * 
pci->ports);
     pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->iobar);