As requested in Documentation/gpu/todo.rst, replace driver calls to
drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and
DRM_MODESET_LOCK_ALL_END()
Signed-off-by: Fernando Ramos <[email protected]>
---
drivers/gpu/drm/radeon/radeon_device.c | 13 +++++++++----
drivers/gpu/drm/radeon/radeon_dp_mst.c | 7 +++++--
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 4f0fbf667431..3feb1fd44409 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -37,6 +37,7 @@
#include <drm/drm_cache.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_device.h>
+#include <drm/drm_drv.h>
#include <drm/drm_file.h>
#include <drm/drm_probe_helper.h>
#include <drm/radeon_drm.h>
@@ -1559,7 +1560,9 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
struct pci_dev *pdev;
struct drm_crtc *crtc;
struct drm_connector *connector;
+ struct drm_modeset_acquire_ctx ctx;
int i, r;
+ int ret;
if (dev == NULL || dev->dev_private == NULL) {
return -ENODEV;
@@ -1573,12 +1576,12 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
drm_kms_helper_poll_disable(dev);
- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
/* turn off display hw */
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
}
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
/* unpin the front buffers and cursors */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
@@ -1663,7 +1666,9 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
struct radeon_device *rdev = dev->dev_private;
struct pci_dev *pdev = to_pci_dev(dev->dev);
struct drm_crtc *crtc;
+ struct drm_modeset_acquire_ctx ctx;
int r;
+ int ret;
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
return 0;
@@ -1741,11 +1746,11 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
if (fbcon) {
drm_helper_resume_force_mode(dev);
/* turn on display hw */
- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
}
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
}
drm_kms_helper_poll_enable(dev);
diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c
index ec867fa880a4..04fe7b0a6746 100644
--- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
+++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c
@@ -4,6 +4,7 @@
#include <drm/drm_fb_helper.h>
#include <drm/drm_file.h>
#include <drm/drm_probe_helper.h>
+#include <drm/drm_drv.h>
#include "atom.h"
#include "ni_reg.h"
@@ -737,11 +738,13 @@ static int radeon_debugfs_mst_info_show(struct seq_file *m, void *unused)
struct radeon_device *rdev = (struct radeon_device *)m->private;
struct drm_device *dev = rdev->ddev;
struct drm_connector *connector;
+ struct drm_modeset_acquire_ctx ctx;
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
int i;
+ int ret;
- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
continue;
@@ -759,7 +762,7 @@ static int radeon_debugfs_mst_info_show(struct seq_file *m, void *unused)
radeon_connector->cur_stream_attribs[i].fe,
radeon_connector->cur_stream_attribs[i].slots);
}
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
return 0;
}
--
2.33.0
On Thu, Sep 16, 2021 at 11:15:45PM +0200, Fernando Ramos wrote:
> As requested in Documentation/gpu/todo.rst, replace driver calls to
> drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and
> DRM_MODESET_LOCK_ALL_END()
>
> Signed-off-by: Fernando Ramos <[email protected]>
> ---
> drivers/gpu/drm/radeon/radeon_device.c | 13 +++++++++----
> drivers/gpu/drm/radeon/radeon_dp_mst.c | 7 +++++--
> 2 files changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
> index 4f0fbf667431..3feb1fd44409 100644
> --- a/drivers/gpu/drm/radeon/radeon_device.c
> +++ b/drivers/gpu/drm/radeon/radeon_device.c
> @@ -37,6 +37,7 @@
> #include <drm/drm_cache.h>
> #include <drm/drm_crtc_helper.h>
> #include <drm/drm_device.h>
> +#include <drm/drm_drv.h>
> #include <drm/drm_file.h>
> #include <drm/drm_probe_helper.h>
> #include <drm/radeon_drm.h>
> @@ -1559,7 +1560,9 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
> struct pci_dev *pdev;
> struct drm_crtc *crtc;
> struct drm_connector *connector;
> + struct drm_modeset_acquire_ctx ctx;
> int i, r;
> + int ret;
Could you please tuck this up with i & r?
>
> if (dev == NULL || dev->dev_private == NULL) {
> return -ENODEV;
> @@ -1573,12 +1576,12 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
>
> drm_kms_helper_poll_disable(dev);
>
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
> /* turn off display hw */
> list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
> }
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
You should check ret here
>
> /* unpin the front buffers and cursors */
> list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
> @@ -1663,7 +1666,9 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
> struct radeon_device *rdev = dev->dev_private;
> struct pci_dev *pdev = to_pci_dev(dev->dev);
> struct drm_crtc *crtc;
> + struct drm_modeset_acquire_ctx ctx;
> int r;
> + int ret;
Same suggestion here, move up with r
>
> if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
> return 0;
> @@ -1741,11 +1746,11 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
> if (fbcon) {
> drm_helper_resume_force_mode(dev);
> /* turn on display hw */
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
> list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
> }
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
Also check ret here
> }
>
> drm_kms_helper_poll_enable(dev);
> diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c
> index ec867fa880a4..04fe7b0a6746 100644
> --- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
> +++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c
> @@ -4,6 +4,7 @@
> #include <drm/drm_fb_helper.h>
> #include <drm/drm_file.h>
> #include <drm/drm_probe_helper.h>
> +#include <drm/drm_drv.h>
>
> #include "atom.h"
> #include "ni_reg.h"
> @@ -737,11 +738,13 @@ static int radeon_debugfs_mst_info_show(struct seq_file *m, void *unused)
> struct radeon_device *rdev = (struct radeon_device *)m->private;
> struct drm_device *dev = rdev->ddev;
> struct drm_connector *connector;
> + struct drm_modeset_acquire_ctx ctx;
> struct radeon_connector *radeon_connector;
> struct radeon_connector_atom_dig *dig_connector;
> int i;
> + int ret;
Move up with i
>
> - drm_modeset_lock_all(dev);
> + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
> list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
> continue;
> @@ -759,7 +762,7 @@ static int radeon_debugfs_mst_info_show(struct seq_file *m, void *unused)
> radeon_connector->cur_stream_attribs[i].fe,
> radeon_connector->cur_stream_attribs[i].slots);
> }
> - drm_modeset_unlock_all(dev);
> + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
> return 0;
> }
>
> --
> 2.33.0
>
--
Sean Paul, Software Engineer, Google / Chromium OS
> > + struct drm_modeset_acquire_ctx ctx;
> > int i, r;
> > + int ret;
>
> Could you please tuck this up with i & r?
Done!
> > - drm_modeset_unlock_all(dev);
> > + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
>
> You should check ret here
Would it be save to return at this point if the lock fails?
In other words, can I just add this? --> "if (ret) return ret;"
> > + struct drm_modeset_acquire_ctx ctx;
> > int r;
> > + int ret;
>
> Same suggestion here, move up with r
Done!
> > - drm_modeset_unlock_all(dev);
> > + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
>
> Also check ret here
Same question. Would "if (ret) return ret;" be safe here?
> > int i;
> > + int ret;
>
> Move up with i
Done!
> > - drm_modeset_unlock_all(dev);
> > + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
> > return 0;
I can also "return ret;" instead of "0".
What happens when a DEFINE_SHOW_ATTRIBUTE'd function returns non-zero? Is it ok?
Or do we want to always return "0" to print whatever we can?