[PATCH xserver v2] xrandrprovider: Do not use separate lists for unbound / source / offload slaves
Hans de Goede
hdegoede at redhat.com
Fri May 27 13:28:12 UTC 2016
A single provider can be both a offload and source slave at the same time,
the use of seperate lists breaks in this case e.g. :
xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x7b cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 2 associated providers: 0 name:modesetting
Provider 1: id: 0x46 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 5 associated providers: 0 name:modesetting
xrandr --setprovideroutputsource 1 0x7b
xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x7b cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 2 associated providers: 1 name:modesetting
Provider 1: id: 0x46 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 5 associated providers: 1 name:modesetting
xrandr --setprovideroffloadsink 1 0x7b
xrandr --listproviders
Providers: number : 3
Provider 0: id: 0x7b cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 2 associated providers: 2 name:modesetting
Provider 1: id: 0x46 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 5 associated providers: 2 name:modesetting
Provider 2: id: 0x46 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 5 associated providers: 2 name:modesetting
Not good. The problem is that the provider with id 0x46 now is on both
the output_slave_list and the offload_slave_list of the master screen.
This commit fixes this by unifying all 3 lists into a single slaves list.
Note that this does change the struct _Screen definition, so this is an ABI
break. I do not expect any of the drivers to actually use the removed / changed
fields so a recompile should suffice.
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
Change sin v2:
-Do not call AttachUnboundGPU on SetOffloadSink/SetOutputSource(NULL)
-Fix "associated providers" count when source_provider and sink_provider
are the same
-Fix assert(new->isGPU) triggering on server exit caused by calling
DetachUnboundGPU on the master
---
dix/dispatch.c | 30 ++++++++++++++-----------
hw/xfree86/dri2/dri2.c | 7 ++++--
hw/xfree86/modes/xf86RandR12.c | 11 ++--------
include/scrnintstr.h | 15 ++++++-------
present/present.c | 2 +-
randr/randr.c | 42 ++++++++++++++---------------------
randr/rrcrtc.c | 16 +++++++++++---
randr/rrmonitor.c | 17 +++++++++++---
randr/rroutput.c | 10 ++++-----
randr/rrprovider.c | 50 ++++++++++++++----------------------------
randr/rrscreen.c | 12 +++++++---
11 files changed, 104 insertions(+), 108 deletions(-)
diff --git a/dix/dispatch.c b/dix/dispatch.c
index 26122c1..6b893b4 100644
--- a/dix/dispatch.c
+++ b/dix/dispatch.c
@@ -3790,9 +3790,7 @@ static int init_screen(ScreenPtr pScreen, int i, Bool gpu)
pScreen->CreateScreenResources = 0;
xorg_list_init(&pScreen->pixmap_dirty_list);
- xorg_list_init(&pScreen->unattached_list);
- xorg_list_init(&pScreen->output_slave_list);
- xorg_list_init(&pScreen->offload_slave_list);
+ xorg_list_init(&pScreen->slave_list);
/*
* This loop gets run once for every Screen that gets added,
@@ -3951,7 +3949,7 @@ AttachUnboundGPU(ScreenPtr pScreen, ScreenPtr new)
{
assert(new->isGPU);
assert(!new->current_master);
- xorg_list_add(&new->unattached_head, &pScreen->unattached_list);
+ xorg_list_add(&new->slave_head, &pScreen->slave_list);
new->current_master = pScreen;
}
@@ -3959,7 +3957,9 @@ void
DetachUnboundGPU(ScreenPtr slave)
{
assert(slave->isGPU);
- xorg_list_del(&slave->unattached_head);
+ assert(!slave->is_output_slave);
+ assert(!slave->is_offload_slave);
+ xorg_list_del(&slave->slave_head);
slave->current_master = NULL;
}
@@ -3967,31 +3967,35 @@ void
AttachOutputGPU(ScreenPtr pScreen, ScreenPtr new)
{
assert(new->isGPU);
- xorg_list_add(&new->output_head, &pScreen->output_slave_list);
- new->current_master = pScreen;
+ assert(!new->is_output_slave);
+ assert(new->current_master == pScreen);
+ new->is_output_slave = TRUE;
+ new->current_master->output_slaves++;
}
void
DetachOutputGPU(ScreenPtr slave)
{
assert(slave->isGPU);
- xorg_list_del(&slave->output_head);
- slave->current_master = NULL;
+ assert(slave->is_output_slave);
+ slave->current_master->output_slaves--;
+ slave->is_output_slave = FALSE;
}
void
AttachOffloadGPU(ScreenPtr pScreen, ScreenPtr new)
{
assert(new->isGPU);
- xorg_list_add(&new->offload_head, &pScreen->offload_slave_list);
- new->current_master = pScreen;
+ assert(!new->is_offload_slave);
+ assert(new->current_master == pScreen);
+ new->is_offload_slave = TRUE;
}
void
DetachOffloadGPU(ScreenPtr slave)
{
assert(slave->isGPU);
- xorg_list_del(&slave->offload_head);
- slave->current_master = NULL;
+ assert(slave->is_offload_slave);
+ slave->is_offload_slave = FALSE;
}
diff --git a/hw/xfree86/dri2/dri2.c b/hw/xfree86/dri2/dri2.c
index f80599f..2165603 100644
--- a/hw/xfree86/dri2/dri2.c
+++ b/hw/xfree86/dri2/dri2.c
@@ -186,12 +186,15 @@ static ScreenPtr
GetScreenPrime(ScreenPtr master, int prime_id)
{
ScreenPtr slave;
- if (prime_id == 0 || xorg_list_is_empty(&master->offload_slave_list)) {
+ if (prime_id == 0) {
return master;
}
- xorg_list_for_each_entry(slave, &master->offload_slave_list, offload_head) {
+ xorg_list_for_each_entry(slave, &master->slave_list, slave_head) {
DRI2ScreenPtr ds;
+ if (!slave->is_offload_slave)
+ continue;
+
ds = DRI2GetScreen(slave);
if (ds == NULL)
continue;
diff --git a/hw/xfree86/modes/xf86RandR12.c b/hw/xfree86/modes/xf86RandR12.c
index 60d2254..4a21766 100644
--- a/hw/xfree86/modes/xf86RandR12.c
+++ b/hw/xfree86/modes/xf86RandR12.c
@@ -1836,10 +1836,7 @@ xf86RandR14ProviderSetOutputSource(ScreenPtr pScreen,
{
if (!source_provider) {
if (provider->output_source) {
- ScreenPtr cmScreen = pScreen->current_master;
-
xf86DetachOutputGPU(pScreen);
- AttachUnboundGPU(cmScreen, pScreen);
}
provider->output_source = NULL;
return TRUE;
@@ -1850,7 +1847,6 @@ xf86RandR14ProviderSetOutputSource(ScreenPtr pScreen,
SetRootClip(source_provider->pScreen, ROOT_CLIP_NONE);
- DetachUnboundGPU(pScreen);
AttachOutputGPU(source_provider->pScreen, pScreen);
provider->output_source = source_provider;
@@ -1865,9 +1861,7 @@ xf86RandR14ProviderSetOffloadSink(ScreenPtr pScreen,
{
if (!sink_provider) {
if (provider->offload_sink) {
- ScreenPtr cmScreen = pScreen->current_master;
xf86DetachOutputGPU(pScreen);
- AttachUnboundGPU(cmScreen, pScreen);
}
provider->offload_sink = NULL;
@@ -1877,7 +1871,6 @@ xf86RandR14ProviderSetOffloadSink(ScreenPtr pScreen,
if (provider->offload_sink == sink_provider)
return TRUE;
- DetachUnboundGPU(pScreen);
AttachOffloadGPU(sink_provider->pScreen, pScreen);
provider->offload_sink = sink_provider;
@@ -1956,12 +1949,12 @@ xf86RandR14ProviderDestroy(ScreenPtr screen, RRProviderPtr provider)
config->randr_provider->offload_sink = NULL;
RRSetChanged(screen);
}
- else if (config->randr_provider->output_source) {
+ if (config->randr_provider->output_source) {
xf86DetachOutputGPU(screen);
config->randr_provider->output_source = NULL;
RRSetChanged(screen);
}
- else if (screen->current_master)
+ if (screen->current_master)
DetachUnboundGPU(screen);
}
config->randr_provider = NULL;
diff --git a/include/scrnintstr.h b/include/scrnintstr.h
index 2e617c4..63ef55c 100644
--- a/include/scrnintstr.h
+++ b/include/scrnintstr.h
@@ -590,13 +590,14 @@ typedef struct _Screen {
Bool isGPU;
- struct xorg_list unattached_list;
- struct xorg_list unattached_head;
-
+ /* Info on this screen's slaves (if any) */
+ struct xorg_list slave_list;
+ struct xorg_list slave_head;
+ int output_slaves;
+ /* Info for when this screen is a slave */
ScreenPtr current_master;
-
- struct xorg_list output_slave_list;
- struct xorg_list output_head;
+ Bool is_output_slave;
+ Bool is_offload_slave;
SharePixmapBackingProcPtr SharePixmapBacking;
SetSharedPixmapBackingProcPtr SetSharedPixmapBacking;
@@ -605,8 +606,6 @@ typedef struct _Screen {
StopPixmapTrackingProcPtr StopPixmapTracking;
struct xorg_list pixmap_dirty_list;
- struct xorg_list offload_slave_list;
- struct xorg_list offload_head;
ReplaceScanoutPixmapProcPtr ReplaceScanoutPixmap;
XYToWindowProcPtr XYToWindow;
diff --git a/present/present.c b/present/present.c
index 105e2bf..82fbe57 100644
--- a/present/present.c
+++ b/present/present.c
@@ -145,7 +145,7 @@ present_check_flip(RRCrtcPtr crtc,
return FALSE;
/* Fail to flip if we have slave outputs */
- if (!xorg_list_is_empty(&screen->output_slave_list))
+ if (screen->output_slaves)
return FALSE;
/* Make sure the window hasn't been redirected with Composite */
diff --git a/randr/randr.c b/randr/randr.c
index 3aabb19..95ed7e5 100644
--- a/randr/randr.c
+++ b/randr/randr.c
@@ -483,7 +483,10 @@ TellChanged(WindowPtr pWin, void *value)
RRDeliverCrtcEvent(client, pWin, crtc);
}
- xorg_list_for_each_entry(iter, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(iter, &pScreen->slave_list, slave_head) {
+ if (!iter->is_output_slave)
+ continue;
+
pSlaveScrPriv = rrGetScrPriv(iter);
for (i = 0; i < pSlaveScrPriv->numCrtcs; i++) {
RRCrtcPtr crtc = pSlaveScrPriv->crtcs[i];
@@ -502,7 +505,10 @@ TellChanged(WindowPtr pWin, void *value)
RRDeliverOutputEvent(client, pWin, output);
}
- xorg_list_for_each_entry(iter, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(iter, &pScreen->slave_list, slave_head) {
+ if (!iter->is_output_slave)
+ continue;
+
pSlaveScrPriv = rrGetScrPriv(iter);
for (i = 0; i < pSlaveScrPriv->numOutputs; i++) {
RROutputPtr output = pSlaveScrPriv->outputs[i];
@@ -514,17 +520,7 @@ TellChanged(WindowPtr pWin, void *value)
}
if (pRREvent->mask & RRProviderChangeNotifyMask) {
- xorg_list_for_each_entry(iter, &pScreen->output_slave_list, output_head) {
- pSlaveScrPriv = rrGetScrPriv(iter);
- if (pSlaveScrPriv->provider->changed)
- RRDeliverProviderEvent(client, pWin, pSlaveScrPriv->provider);
- }
- xorg_list_for_each_entry(iter, &pScreen->offload_slave_list, offload_head) {
- pSlaveScrPriv = rrGetScrPriv(iter);
- if (pSlaveScrPriv->provider->changed)
- RRDeliverProviderEvent(client, pWin, pSlaveScrPriv->provider);
- }
- xorg_list_for_each_entry(iter, &pScreen->unattached_list, unattached_head) {
+ xorg_list_for_each_entry(iter, &pScreen->slave_list, slave_head) {
pSlaveScrPriv = rrGetScrPriv(iter);
if (pSlaveScrPriv->provider->changed)
RRDeliverProviderEvent(client, pWin, pSlaveScrPriv->provider);
@@ -602,21 +598,15 @@ RRTellChanged(ScreenPtr pScreen)
for (i = 0; i < pScrPriv->numCrtcs; i++)
pScrPriv->crtcs[i]->changed = FALSE;
- xorg_list_for_each_entry(iter, &master->output_slave_list, output_head) {
- pSlaveScrPriv = rrGetScrPriv(iter);
- pSlaveScrPriv->provider->changed = FALSE;
- for (i = 0; i < pSlaveScrPriv->numOutputs; i++)
- pSlaveScrPriv->outputs[i]->changed = FALSE;
- for (i = 0; i < pSlaveScrPriv->numCrtcs; i++)
- pSlaveScrPriv->crtcs[i]->changed = FALSE;
- }
- xorg_list_for_each_entry(iter, &master->offload_slave_list, offload_head) {
- pSlaveScrPriv = rrGetScrPriv(iter);
- pSlaveScrPriv->provider->changed = FALSE;
- }
- xorg_list_for_each_entry(iter, &master->unattached_list, unattached_head) {
+ xorg_list_for_each_entry(iter, &master->slave_list, slave_head) {
pSlaveScrPriv = rrGetScrPriv(iter);
pSlaveScrPriv->provider->changed = FALSE;
+ if (iter->is_output_slave) {
+ for (i = 0; i < pSlaveScrPriv->numOutputs; i++)
+ pSlaveScrPriv->outputs[i]->changed = FALSE;
+ for (i = 0; i < pSlaveScrPriv->numCrtcs; i++)
+ pSlaveScrPriv->crtcs[i]->changed = FALSE;
+ }
}
if (mastersp->layoutChanged) {
diff --git a/randr/rrcrtc.c b/randr/rrcrtc.c
index 5447133..ea91ab7 100644
--- a/randr/rrcrtc.c
+++ b/randr/rrcrtc.c
@@ -526,8 +526,12 @@ rrCheckPixmapBounding(ScreenPtr pScreen,
RegionUnion(&total_region, &total_region, &new_crtc_region);
}
- xorg_list_for_each_entry(slave, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(slave, &pScreen->slave_list, slave_head) {
rrScrPrivPtr slave_priv = rrGetScrPriv(slave);
+
+ if (!slave->is_output_slave)
+ continue;
+
for (c = 0; c < slave_priv->numCrtcs; c++) {
RRCrtcPtr slave_crtc = slave_priv->crtcs[c];
@@ -1700,7 +1704,10 @@ RRConstrainCursorHarder(DeviceIntPtr pDev, ScreenPtr pScreen, int mode, int *x,
if (ret == TRUE)
return;
- xorg_list_for_each_entry(slave, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(slave, &pScreen->slave_list, slave_head) {
+ if (!slave->is_output_slave)
+ continue;
+
ret = check_all_screen_crtcs(slave, x, y);
if (ret == TRUE)
return;
@@ -1711,7 +1718,10 @@ RRConstrainCursorHarder(DeviceIntPtr pDev, ScreenPtr pScreen, int mode, int *x,
if (ret == TRUE)
return;
- xorg_list_for_each_entry(slave, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(slave, &pScreen->slave_list, slave_head) {
+ if (!slave->is_output_slave)
+ continue;
+
ret = constrain_all_screen_crtcs(pDev, slave, x, y);
if (ret == TRUE)
return;
diff --git a/randr/rrmonitor.c b/randr/rrmonitor.c
index ba310ea..3f6e03e 100644
--- a/randr/rrmonitor.c
+++ b/randr/rrmonitor.c
@@ -202,8 +202,12 @@ RRMonitorInitList(ScreenPtr screen, RRMonitorListPtr mon_list, Bool get_active)
/* Count the number of crtcs in this and any slave screens */
numCrtcs = pScrPriv->numCrtcs;
- xorg_list_for_each_entry(slave, &screen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(slave, &screen->slave_list, slave_head) {
rrScrPrivPtr pSlavePriv;
+
+ if (!slave->is_output_slave)
+ continue;
+
pSlavePriv = rrGetScrPriv(slave);
numCrtcs += pSlavePriv->numCrtcs;
}
@@ -220,8 +224,12 @@ RRMonitorInitList(ScreenPtr screen, RRMonitorListPtr mon_list, Bool get_active)
mon_list->server_crtc[c] = pScrPriv->crtcs[sc];
}
- xorg_list_for_each_entry(slave, &screen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(slave, &screen->slave_list, slave_head) {
rrScrPrivPtr pSlavePriv;
+
+ if (!slave->is_output_slave)
+ continue;
+
pSlavePriv = rrGetScrPriv(slave);
for (sc = 0; sc < pSlavePriv->numCrtcs; sc++, c++) {
if (pSlavePriv->crtcs[sc]->mode != NULL)
@@ -471,7 +479,10 @@ RRMonitorAdd(ClientPtr client, ScreenPtr screen, RRMonitorPtr monitor)
return BadValue;
}
- xorg_list_for_each_entry(slave, &screen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(slave, &screen->slave_list, slave_head) {
+ if (!slave->is_output_slave)
+ continue;
+
if (RRMonitorMatchesOutputName(slave, monitor->name)) {
client->errorValue = monitor->name;
return BadValue;
diff --git a/randr/rroutput.c b/randr/rroutput.c
index 686ae49..a8efec4 100644
--- a/randr/rroutput.c
+++ b/randr/rroutput.c
@@ -570,12 +570,10 @@ ProcRRSetOutputPrimary(ClientPtr client)
RRSetPrimaryOutput(pWin->drawable.pScreen, pScrPriv, output);
xorg_list_for_each_entry(slave,
- &pWin->drawable.pScreen->output_slave_list,
- output_head) {
- rrScrPrivPtr pSlavePriv;
- pSlavePriv = rrGetScrPriv(slave);
-
- RRSetPrimaryOutput(slave, pSlavePriv, output);
+ &pWin->drawable.pScreen->slave_list,
+ slave_head) {
+ if (slave->is_output_slave)
+ RRSetPrimaryOutput(slave, rrGetScrPriv(slave), output);
}
}
diff --git a/randr/rrprovider.c b/randr/rrprovider.c
index 5329f41..8ef4726 100644
--- a/randr/rrprovider.c
+++ b/randr/rrprovider.c
@@ -72,15 +72,7 @@ ProcRRGetProviders (ClientPtr client)
if (pScrPriv->provider)
total_providers++;
- xorg_list_for_each_entry(iter, &pScreen->output_slave_list, output_head) {
- pScrPriv = rrGetScrPriv(iter);
- total_providers += pScrPriv->provider ? 1 : 0;
- }
- xorg_list_for_each_entry(iter, &pScreen->offload_slave_list, offload_head) {
- pScrPriv = rrGetScrPriv(iter);
- total_providers += pScrPriv->provider ? 1 : 0;
- }
- xorg_list_for_each_entry(iter, &pScreen->unattached_list, unattached_head) {
+ xorg_list_for_each_entry(iter, &pScreen->slave_list, slave_head) {
pScrPriv = rrGetScrPriv(iter);
total_providers += pScrPriv->provider ? 1 : 0;
}
@@ -116,13 +108,7 @@ ProcRRGetProviders (ClientPtr client)
providers = (RRProvider *)extra;
ADD_PROVIDER(pScreen);
- xorg_list_for_each_entry(iter, &pScreen->output_slave_list, output_head) {
- ADD_PROVIDER(iter);
- }
- xorg_list_for_each_entry(iter, &pScreen->offload_slave_list, offload_head) {
- ADD_PROVIDER(iter);
- }
- xorg_list_for_each_entry(iter, &pScreen->unattached_list, unattached_head) {
+ xorg_list_for_each_entry(iter, &pScreen->slave_list, slave_head) {
ADD_PROVIDER(iter);
}
}
@@ -182,12 +168,13 @@ ProcRRGetProviderInfo (ClientPtr client)
/* count associated providers */
if (provider->offload_sink)
rep.nAssociatedProviders++;
- if (provider->output_source)
- rep.nAssociatedProviders++;
- xorg_list_for_each_entry(provscreen, &pScreen->output_slave_list, output_head)
- rep.nAssociatedProviders++;
- xorg_list_for_each_entry(provscreen, &pScreen->offload_slave_list, offload_head)
+ if (provider->output_source &&
+ provider->output_source != provider->offload_sink)
rep.nAssociatedProviders++;
+ xorg_list_for_each_entry(provscreen, &pScreen->slave_list, slave_head) {
+ if (provscreen->is_output_slave || provscreen->is_offload_slave)
+ rep.nAssociatedProviders++;
+ }
rep.length = (pScrPriv->numCrtcs + pScrPriv->numOutputs +
(rep.nAssociatedProviders * 2) + bytes_to_int32(rep.nameLength));
@@ -237,27 +224,22 @@ ProcRRGetProviderInfo (ClientPtr client)
swapl(&prov_cap[i]);
i++;
}
- xorg_list_for_each_entry(provscreen, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(provscreen, &pScreen->slave_list, slave_head) {
+ if (!provscreen->is_output_slave && !provscreen->is_offload_slave)
+ continue;
pScrProvPriv = rrGetScrPriv(provscreen);
providers[i] = pScrProvPriv->provider->id;
if (client->swapped)
swapl(&providers[i]);
- prov_cap[i] = RR_Capability_SinkOutput;
+ prov_cap[i] = 0;
+ if (provscreen->is_output_slave)
+ prov_cap[i] |= RR_Capability_SinkOutput;
+ if (provscreen->is_offload_slave)
+ prov_cap[i] |= RR_Capability_SourceOffload;
if (client->swapped)
swapl(&prov_cap[i]);
i++;
}
- xorg_list_for_each_entry(provscreen, &pScreen->offload_slave_list, offload_head) {
- pScrProvPriv = rrGetScrPriv(provscreen);
- providers[i] = pScrProvPriv->provider->id;
- if (client->swapped)
- swapl(&providers[i]);
- prov_cap[i] = RR_Capability_SourceOffload;
- if (client->swapped)
- swapl(&prov_cap[i]);
- i++;
- }
-
memcpy(name, provider->name, rep.nameLength);
if (client->swapped) {
diff --git a/randr/rrscreen.c b/randr/rrscreen.c
index d0ca91e..a69f0bc 100644
--- a/randr/rrscreen.c
+++ b/randr/rrscreen.c
@@ -391,7 +391,10 @@ rrGetMultiScreenResources(ClientPtr client, Bool query, ScreenPtr pScreen)
update_totals(pScreen, pScrPriv);
- xorg_list_for_each_entry(iter, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(iter, &pScreen->slave_list, slave_head) {
+ if (!iter->is_output_slave)
+ continue;
+
pScrPriv = rrGetScrPriv(iter);
if (query)
@@ -447,7 +450,10 @@ rrGetMultiScreenResources(ClientPtr client, Bool query, ScreenPtr pScreen)
}
update_arrays(pScreen, pScrPriv, primary_crtc, has_primary);
- xorg_list_for_each_entry(iter, &pScreen->output_slave_list, output_head) {
+ xorg_list_for_each_entry(iter, &pScreen->slave_list, slave_head) {
+ if (!iter->is_output_slave)
+ continue;
+
pScrPriv = rrGetScrPriv(iter);
update_arrays(iter, pScrPriv, primary_crtc, has_primary);
@@ -500,7 +506,7 @@ rrGetScreenResources(ClientPtr client, Bool query)
if (!RRGetInfo(pScreen, query))
return BadAlloc;
- if (!xorg_list_is_empty(&pScreen->output_slave_list))
+ if (pScreen->output_slaves)
return rrGetMultiScreenResources(client, query, pScreen);
if (!pScrPriv) {
--
2.7.4
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