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authorDave Airlie <airlied@gmail.com>2014-08-08 07:30:53 +1000
committerDave Airlie <airlied@gmail.com>2014-08-08 07:30:53 +1000
commit7963e9db1b1f842fdc53309baa8714d38e9f5681 (patch)
tree9829f2d38b6df9f5a07c349766e77b002cb34539 /drivers
parentfa1d0ee69ca8c123dd791d52830a2e146985ce85 (diff)
downloadlinux-stericsson-7963e9db1b1f842fdc53309baa8714d38e9f5681.tar.gz
Revert "drm: drop redundant drm_file->is_master"
This reverts commit 48ba813701eb14b3008edefef4a0789b328e278c. Thanks to Chris: "drm_file->is_master is not synomous with having drm_file->master == drm_file->minor->master. This is because drm_file->master is the same for all drm_files of the same generation and so when there is a master, every drm_file believes itself to be the master. Confusion ensues and things go pear shaped when one file is closed and there is no master anymore." Conflicts: drivers/gpu/drm/drm_drv.c drivers/gpu/drm/drm_stub.c
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/drm_crtc.c2
-rw-r--r--drivers/gpu/drm/drm_drv.c10
-rw-r--r--drivers/gpu/drm/drm_fops.c4
-rw-r--r--drivers/gpu/drm/drm_ioctl.c2
-rw-r--r--drivers/gpu/drm/drm_lock.c2
-rw-r--r--drivers/gpu/drm/i915/i915_gem_execbuffer.c4
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_drv.c2
-rw-r--r--drivers/staging/imx-drm/imx-drm-core.c2
8 files changed, 17 insertions, 11 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index ca8bb1bc92a0..fa2be249999c 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -3244,7 +3244,7 @@ int drm_mode_getfb(struct drm_device *dev,
r->bpp = fb->bits_per_pixel;
r->pitch = fb->pitches[0];
if (fb->funcs->create_handle) {
- if (drm_is_master(file_priv) || capable(CAP_SYS_ADMIN) ||
+ if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
drm_is_control_client(file_priv)) {
ret = fb->funcs->create_handle(fb, file_priv,
&r->handle);
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 92bc6b1d9646..3242e208c0d0 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -179,7 +179,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
int ret = 0;
mutex_lock(&dev->master_mutex);
- if (drm_is_master(file_priv))
+ if (file_priv->is_master)
goto out_unlock;
if (file_priv->minor->master) {
@@ -193,10 +193,13 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
}
file_priv->minor->master = drm_master_get(file_priv->master);
+ file_priv->is_master = 1;
if (dev->driver->master_set) {
ret = dev->driver->master_set(dev, file_priv, false);
- if (unlikely(ret != 0))
+ if (unlikely(ret != 0)) {
+ file_priv->is_master = 0;
drm_master_put(&file_priv->minor->master);
+ }
}
out_unlock:
@@ -210,7 +213,7 @@ int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
int ret = -EINVAL;
mutex_lock(&dev->master_mutex);
- if (!drm_is_master(file_priv))
+ if (!file_priv->is_master)
goto out_unlock;
if (!file_priv->minor->master)
@@ -220,6 +223,7 @@ int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
if (dev->driver->master_drop)
dev->driver->master_drop(dev, file_priv, false);
drm_master_put(&file_priv->minor->master);
+ file_priv->is_master = 0;
out_unlock:
mutex_unlock(&dev->master_mutex);
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 4b060942cb3c..79d5221c6e41 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -194,6 +194,7 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor)
goto out_close;
}
+ priv->is_master = 1;
/* take another reference for the copy in the local file priv */
priv->master = drm_master_get(priv->minor->master);
priv->authenticated = 1;
@@ -425,7 +426,7 @@ int drm_release(struct inode *inode, struct file *filp)
mutex_lock(&dev->master_mutex);
- if (drm_is_master(file_priv)) {
+ if (file_priv->is_master) {
struct drm_master *master = file_priv->master;
/**
@@ -453,6 +454,7 @@ int drm_release(struct inode *inode, struct file *filp)
/* drop the master reference held by the file priv */
if (file_priv->master)
drm_master_put(&file_priv->master);
+ file_priv->is_master = 0;
mutex_unlock(&dev->master_mutex);
if (dev->driver->postclose)
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index d3d1a8c72e98..40be746b7e68 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -607,7 +607,7 @@ static int drm_ioctl_permit(u32 flags, struct drm_file *file_priv)
return -EACCES;
/* MASTER is only for master or control clients */
- if (unlikely((flags & DRM_MASTER) && !drm_is_master(file_priv) &&
+ if (unlikely((flags & DRM_MASTER) && !file_priv->is_master &&
!drm_is_control_client(file_priv)))
return -EACCES;
diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c
index ea1572596578..e26b59e385ff 100644
--- a/drivers/gpu/drm/drm_lock.c
+++ b/drivers/gpu/drm/drm_lock.c
@@ -112,7 +112,7 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
/* don't set the block all signals on the master process for now
* really probably not the correct answer but lets us debug xkb
* xserver for now */
- if (!drm_is_master(file_priv)) {
+ if (!file_priv->is_master) {
sigemptyset(&dev->sigmask);
sigaddset(&dev->sigmask, SIGSTOP);
sigaddset(&dev->sigmask, SIGTSTP);
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 2dd19da6b4b3..60998fc4e5b2 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1260,7 +1260,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
flags = 0;
if (args->flags & I915_EXEC_SECURE) {
- if (!drm_is_master(file) || !capable(CAP_SYS_ADMIN))
+ if (!file->is_master || !capable(CAP_SYS_ADMIN))
return -EPERM;
flags |= I915_DISPATCH_SECURE;
@@ -1369,7 +1369,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
ret = i915_parse_cmds(ring,
batch_obj,
args->batch_start_offset,
- drm_is_master(file));
+ file->is_master);
if (ret)
goto err;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 63c4d6f0281e..18b54acacfbb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -990,7 +990,7 @@ static struct vmw_master *vmw_master_check(struct drm_device *dev,
if (unlikely(ret != 0))
return ERR_PTR(-ERESTARTSYS);
- if (drm_is_master(file_priv)) {
+ if (file_priv->is_master) {
mutex_unlock(&dev->master_mutex);
return NULL;
}
diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index 72913b299047..6f54ff4f9372 100644
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c
@@ -182,7 +182,7 @@ static void imx_drm_driver_preclose(struct drm_device *drm,
{
int i;
- if (!drm_is_master(file))
+ if (!file->is_master)
return;
for (i = 0; i < MAX_CRTC; i++)