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ide: Fix bootindex for bus_id > 9 

We identify devices by their Open Firmware device paths.  The encoding
of bus numbers is incorrect: idebus_get_fw_dev_path() formats them in
decimal, while SeaBIOS uses hexadecimal.  With bus number > 9, SeaBIOS
will miss the bootindex (lucky case), or apply it to another device
(unlucky case).

Bug can't bite right now: ich9-ahci has six ports, and the sysbus-ahci
created by Calxeda Highbank has just one.

Fix it anyway, by changing %d to %x.

I couldn't find an Open Firmware spec covering this.  For what it's
worth, OVMF agrees with SeaBIOS.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Markus Armbruster 2014-08-15 13:32:37 +02:00 committed by Stefan Hajnoczi
parent a6aebb38ba
commit 28fa7133b8
1 changed files with 1 additions and 1 deletions
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2
hw/ide/qdev.c
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@ -59,7 +59,7 @@ static char *idebus_get_fw_dev_path(DeviceState *dev)
{
char path[30];
snprintf(path, sizeof(path), "%s@%d", qdev_fw_name(dev),
snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
((IDEBus*)dev->parent_bus)->bus_id);
return g_strdup(path);