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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-20 08:42:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-20 08:42:48 -0700
commit5cab3856e76f4e6dd44731cea054021105e3e02d (patch)
tree0fce18d11071276dac994765ffc35248438edab2
parent2edbdd1266784495979576c4ab4ef294c29bad27 (diff)
parent59de2bebabc5027f93df999d59cc65df591c3e6e (diff)
Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: agp: zero pages before sending to userspace drm: check for minor master before allowing drop master. drm: set/clear is_master when master changed drm: clean dirty memory after device release drm: count reaches -1
-rw-r--r--drivers/char/agp/generic.c4
-rw-r--r--drivers/gpu/drm/drm_stub.c11
-rw-r--r--drivers/gpu/drm/drm_sysfs.c1
-rw-r--r--drivers/gpu/drm/via/via_dma.c12
4 files changed, 20 insertions, 8 deletions
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index 10d6cbd7c05..2224b762b7f 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -1226,7 +1226,7 @@ int agp_generic_alloc_pages(struct agp_bridge_data *bridge, struct agp_memory *m
int i, ret = -ENOMEM;
for (i = 0; i < num_pages; i++) {
- page = alloc_page(GFP_KERNEL | GFP_DMA32);
+ page = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
/* agp_free_memory() needs gart address */
if (page == NULL)
goto out;
@@ -1257,7 +1257,7 @@ void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
{
struct page * page;
- page = alloc_page(GFP_KERNEL | GFP_DMA32);
+ page = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
if (page == NULL)
return NULL;
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index d009661781b..ef878615c49 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -159,6 +159,9 @@ void drm_master_put(struct drm_master **master)
int drm_setmaster_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
+ if (file_priv->is_master)
+ return 0;
+
if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
return -EINVAL;
@@ -169,6 +172,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
file_priv->minor->master != file_priv->master) {
mutex_lock(&dev->struct_mutex);
file_priv->minor->master = drm_master_get(file_priv->master);
+ file_priv->is_master = 1;
mutex_unlock(&dev->struct_mutex);
}
@@ -178,10 +182,15 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
- if (!file_priv->master)
+ if (!file_priv->is_master)
return -EINVAL;
+
+ if (!file_priv->minor->master)
+ return -EINVAL;
+
mutex_lock(&dev->struct_mutex);
drm_master_put(&file_priv->minor->master);
+ file_priv->is_master = 0;
mutex_unlock(&dev->struct_mutex);
return 0;
}
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index bc0c6849360..022876ae34f 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -132,6 +132,7 @@ void drm_sysfs_destroy(void)
*/
static void drm_sysfs_device_release(struct device *dev)
{
+ memset(dev, 0, sizeof(struct device));
return;
}
diff --git a/drivers/gpu/drm/via/via_dma.c b/drivers/gpu/drm/via/via_dma.c
index 7a339dba6a6..bfb92d28326 100644
--- a/drivers/gpu/drm/via/via_dma.c
+++ b/drivers/gpu/drm/via/via_dma.c
@@ -481,11 +481,13 @@ static int via_wait_idle(drm_via_private_t * dev_priv)
{
int count = 10000000;
- while (!(VIA_READ(VIA_REG_STATUS) & VIA_VR_QUEUE_BUSY) && count--);
+ while (!(VIA_READ(VIA_REG_STATUS) & VIA_VR_QUEUE_BUSY) && --count)
+ ;
- while (count-- && (VIA_READ(VIA_REG_STATUS) &
+ while (count && (VIA_READ(VIA_REG_STATUS) &
(VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY |
- VIA_3D_ENG_BUSY))) ;
+ VIA_3D_ENG_BUSY)))
+ --count;
return count;
}
@@ -705,7 +707,7 @@ static int via_cmdbuf_size(struct drm_device *dev, void *data, struct drm_file *
switch (d_siz->func) {
case VIA_CMDBUF_SPACE:
while (((tmp_size = via_cmdbuf_space(dev_priv)) < d_siz->size)
- && count--) {
+ && --count) {
if (!d_siz->wait) {
break;
}
@@ -717,7 +719,7 @@ static int via_cmdbuf_size(struct drm_device *dev, void *data, struct drm_file *
break;
case VIA_CMDBUF_LAG:
while (((tmp_size = via_cmdbuf_lag(dev_priv)) > d_siz->size)
- && count--) {
+ && --count) {
if (!d_siz->wait) {
break;
}