| Message ID | 1498745240-30658-4-git-send-email-mark.cave-ayland@ilande.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, 29 Jun 2017 15:07:17 +0100 Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> wrote: > This will enable the fw_cfg device to be placed anywhere within the QOM tree > regardless of its machine location. > > Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> > --- > hw/nvram/fw_cfg.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c > index 99bdbc2..0fe7404 100644 > --- a/hw/nvram/fw_cfg.c > +++ b/hw/nvram/fw_cfg.c > @@ -1017,7 +1017,7 @@ FWCfgState *fw_cfg_init_mem(hwaddr ctl_addr, hwaddr data_addr) > > FWCfgState *fw_cfg_find(void) > { > - return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL)); > + return FW_CFG(object_resolve_path_type("", TYPE_FW_CFG, NULL)); I insist on using ambiguous argument see why it's needed https://www.mail-archive.com/qemu-devel@nongnu.org/msg460692.html > } > > static void fw_cfg_class_init(ObjectClass *klass, void *data)
On 03/07/17 10:42, Igor Mammedov wrote: > On Thu, 29 Jun 2017 15:07:17 +0100 > Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> wrote: > >> This will enable the fw_cfg device to be placed anywhere within the QOM tree >> regardless of its machine location. >> >> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> >> --- >> hw/nvram/fw_cfg.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c >> index 99bdbc2..0fe7404 100644 >> --- a/hw/nvram/fw_cfg.c >> +++ b/hw/nvram/fw_cfg.c >> @@ -1017,7 +1017,7 @@ FWCfgState *fw_cfg_init_mem(hwaddr ctl_addr, hwaddr data_addr) >> >> FWCfgState *fw_cfg_find(void) >> { >> - return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL)); >> + return FW_CFG(object_resolve_path_type("", TYPE_FW_CFG, NULL)); > I insist on using ambiguous argument > > see why it's needed > https://www.mail-archive.com/qemu-devel@nongnu.org/msg460692.html Yes I did take into account your previous comment about the ambiguous argument, but with the fw_cfg_unattached_at_realize() check added in the v7 patchset, it is actually impossible to realize more than one fw_cfg device, and at realize time that device must have been linked as a child device to a parent device. Hence it should be impossible for the above situation where more than one fw_cfg device can exist in the QOM tree to occur. Have I missed something in the logic which would prevent this from happening? ATB, Mark.
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 99bdbc2..0fe7404 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -1017,7 +1017,7 @@ FWCfgState *fw_cfg_init_mem(hwaddr ctl_addr, hwaddr data_addr) FWCfgState *fw_cfg_find(void) { - return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL)); + return FW_CFG(object_resolve_path_type("", TYPE_FW_CFG, NULL)); } static void fw_cfg_class_init(ObjectClass *klass, void *data)
This will enable the fw_cfg device to be placed anywhere within the QOM tree regardless of its machine location. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> --- hw/nvram/fw_cfg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)