[PATCH v3 12/20] drm/i915: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()

7 Oct 2021

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 greenfoo@u92.eu
---
 drivers/gpu/drm/i915/display/intel_audio.c    | 16 ++++---
 .../drm/i915/display/intel_display_debugfs.c  | 46 ++++++++++++-------
 drivers/gpu/drm/i915/display/intel_overlay.c  |  6 ++-
 drivers/gpu/drm/i915/display/intel_pipe_crc.c |  7 ++-
 drivers/gpu/drm/i915/i915_drv.c               | 13 ++++--
 5 files changed, 58 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index 03e8c05a74f6..37699f13b21f 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -26,6 +26,7 @@
#include <drm/drm_edid.h>
 #include <drm/i915_component.h>
+#include <drm/drm_drv.h>
#include "i915_drv.h"
 #include "intel_atomic.h"
@@ -1225,7 +1226,8 @@ static int i915_audio_component_bind(struct device *i915_kdev,
 {
    struct i915_audio_component *acomp = data;
    struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
-	int i;
+	struct drm_modeset_acquire_ctx ctx;
+	int i, ret;
if (drm_WARN_ON(&dev_priv->drm, acomp->base.ops || acomp->base.dev))
    	return -EEXIST;
@@ -1235,16 +1237,16 @@ static int i915_audio_component_bind(struct device *i915_kdev,
    				 DL_FLAG_STATELESS)))
    	return -ENOMEM;
-	drm_modeset_lock_all(&dev_priv->drm);
+	DRM_MODESET_LOCK_ALL_BEGIN((&dev_priv->drm), ctx, 0, ret);
    acomp->base.ops = &i915_audio_component_ops;
    acomp->base.dev = i915_kdev;
    BUILD_BUG_ON(MAX_PORTS != I915_MAX_PORTS);
    for (i = 0; i < ARRAY_SIZE(acomp->aud_sample_rate); i++)
    	acomp->aud_sample_rate[i] = 0;
    dev_priv->audio_component = acomp;
-	drm_modeset_unlock_all(&dev_priv->drm);
+	DRM_MODESET_LOCK_ALL_END((&dev_priv->drm), ctx, ret);
-	return 0;
+	return ret;
 }
static void i915_audio_component_unbind(struct device *i915_kdev,
@@ -1252,12 +1254,14 @@ static void i915_audio_component_unbind(struct device *i915_kdev,
 {
    struct i915_audio_component *acomp = data;
    struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
+	struct drm_modeset_acquire_ctx ctx;
+	int ret;
-	drm_modeset_lock_all(&dev_priv->drm);
+	DRM_MODESET_LOCK_ALL_BEGIN((&dev_priv->drm), ctx, 0, ret);
    acomp->base.ops = NULL;
    acomp->base.dev = NULL;
    dev_priv->audio_component = NULL;
-	drm_modeset_unlock_all(&dev_priv->drm);
+	DRM_MODESET_LOCK_ALL_END((&dev_priv->drm), ctx, ret);
device_link_remove(hda_kdev, i915_kdev);
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index 309d74fd86ce..8a4cc82f9f23 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -5,6 +5,7 @@
#include <drm/drm_debugfs.h>
 #include <drm/drm_fourcc.h>
+#include <drm/drm_drv.h>
#include "i915_debugfs.h"
 #include "intel_display_debugfs.h"
@@ -1058,11 +1059,13 @@ static int i915_display_info(struct seq_file *m, void *unused)
    struct intel_crtc *crtc;
    struct drm_connector *connector;
    struct drm_connector_list_iter conn_iter;
+	struct drm_modeset_acquire_ctx ctx;
    intel_wakeref_t wakeref;
+	int ret;
wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
seq_printf(m, "CRTC info\n");
    seq_printf(m, "---------\n");
@@ -1077,20 +1080,21 @@ static int i915_display_info(struct seq_file *m, void *unused)
    	intel_connector_info(m, connector);
    drm_connector_list_iter_end(&conn_iter);
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
-	return 0;
+	return ret;
 }
static int i915_shared_dplls_info(struct seq_file *m, void *unused)
 {
    struct drm_i915_private *dev_priv = node_to_i915(m->private);
    struct drm_device *dev = &dev_priv->drm;
-	int i;
+	struct drm_modeset_acquire_ctx ctx;
+	int i, ret;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
seq_printf(m, "PLL refclks: non-SSC: %d kHz, SSC: %d kHz\n",
    	   dev_priv->dpll.ref_clks.nssc,
@@ -1133,9 +1137,9 @@ static int i915_shared_dplls_info(struct seq_file *m, void *unused)
    	seq_printf(m, " mg_pll_tdc_coldst_bias: 0x%08x\n",
    		   pll->state.hw_state.mg_pll_tdc_coldst_bias);
    }
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
-	return 0;
+	return ret;
 }
static int i915_ipc_status_show(struct seq_file *m, void *data)
@@ -1194,13 +1198,15 @@ static int i915_ddb_info(struct seq_file *m, void *unused)
 {
    struct drm_i915_private *dev_priv = node_to_i915(m->private);
    struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
    struct skl_ddb_entry *entry;
    struct intel_crtc *crtc;
+	int ret;
if (DISPLAY_VER(dev_priv) < 9)
    	return -ENODEV;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
seq_printf(m, "%-15s%8s%8s%8s\n", "", "Start", "End", "Size");
@@ -1224,9 +1230,9 @@ static int i915_ddb_info(struct seq_file *m, void *unused)
    		   entry->end, skl_ddb_entry_size(entry));
    }
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
-	return 0;
+	return ret;
 }
static void drrs_status_per_crtc(struct seq_file *m,
@@ -1304,10 +1310,12 @@ static int i915_drrs_status(struct seq_file *m, void *unused)
 {
    struct drm_i915_private *dev_priv = node_to_i915(m->private);
    struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
    struct intel_crtc *crtc;
    int active_crtc_cnt = 0;
+	int ret;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
    for_each_intel_crtc(dev, crtc) {
    	if (crtc->base.state->active) {
    		active_crtc_cnt++;
@@ -1316,7 +1324,7 @@ static int i915_drrs_status(struct seq_file *m, void *unused)
    		drrs_status_per_crtc(m, dev, crtc);
    	}
    }
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
if (!active_crtc_cnt)
    	seq_puts(m, "No active crtc found\n");
@@ -1593,8 +1601,10 @@ static void wm_latency_show(struct seq_file *m, const u16 wm[8])
 {
    struct drm_i915_private *dev_priv = m->private;
    struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
    int level;
    int num_levels;
+	int ret;
if (IS_CHERRYVIEW(dev_priv))
    	num_levels = 3;
@@ -1605,7 +1615,7 @@ static void wm_latency_show(struct seq_file *m, const u16 wm[8])
    else
    	num_levels = ilk_wm_max_level(dev_priv) + 1;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
for (level = 0; level < num_levels; level++) {
    	unsigned int latency = wm[level];
@@ -1626,7 +1636,7 @@ static void wm_latency_show(struct seq_file *m, const u16 wm[8])
    		   level, wm[level], latency / 10, latency % 10);
    }
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 }
static int pri_wm_latency_show(struct seq_file *m, void *data)
@@ -1710,6 +1720,7 @@ static ssize_t wm_latency_write(struct file *file, const char __user *ubuf,
    struct seq_file *m = file->private_data;
    struct drm_i915_private *dev_priv = m->private;
    struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
    u16 new[8] = { 0 };
    int num_levels;
    int level;
@@ -1739,12 +1750,15 @@ static ssize_t wm_latency_write(struct file *file, const char __user *ubuf,
    if (ret != num_levels)
    	return -EINVAL;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
for (level = 0; level < num_levels; level++)
    	wm[level] = new[level];
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
+
+	if (ret)
+		return ret;
return len;
 }
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index 7e3f5c6ca484..c0ee135e5499 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -27,6 +27,7 @@
  */
#include <drm/drm_fourcc.h>
+#include <drm/drm_drv.h>
#include "gem/i915_gem_pm.h"
 #include "gt/intel_gpu_commands.h"
@@ -1263,6 +1264,7 @@ int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
 {
    struct drm_intel_overlay_attrs *attrs = data;
    struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_modeset_acquire_ctx ctx;
    struct intel_overlay *overlay;
    int ret;
@@ -1272,7 +1274,7 @@ int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
    	return -ENODEV;
    }
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
ret = -EINVAL;
    if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
@@ -1329,7 +1331,7 @@ int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
ret = 0;
 out_unlock:
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
return ret;
 }
diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
index 8ac263f471be..d0bc74904b93 100644
--- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c
+++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
@@ -29,6 +29,8 @@
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
+#include <drm/drm_drv.h>
+
 #include "intel_atomic.h"
 #include "intel_de.h"
 #include "intel_display_types.h"
@@ -76,6 +78,7 @@ static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
    			     enum intel_pipe_crc_source *source)
 {
    struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
    struct intel_encoder *encoder;
    struct intel_crtc *crtc;
    struct intel_digital_port *dig_port;
@@ -83,7 +86,7 @@ static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
*source = INTEL_PIPE_CRC_SOURCE_PIPE;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
    for_each_intel_encoder(dev, encoder) {
    	if (!encoder->base.crtc)
    		continue;
@@ -120,7 +123,7 @@ static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
    		break;
    	}
    }
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
return ret;
 }
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c65c3742887a..298a5b12e882 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -44,6 +44,7 @@
 #include <drm/drm_ioctl.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_drv.h>
#include "display/intel_acpi.h"
 #include "display/intel_bw.h"
@@ -1010,31 +1011,35 @@ static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
 static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
 {
    struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
    struct intel_encoder *encoder;
+	int ret;
if (!HAS_DISPLAY(dev_priv))
    	return;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
    for_each_intel_encoder(dev, encoder)
    	if (encoder->suspend)
    		encoder->suspend(encoder);
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 }
static void intel_shutdown_encoders(struct drm_i915_private *dev_priv)
 {
    struct drm_device *dev = &dev_priv->drm;
+	struct drm_modeset_acquire_ctx ctx;
    struct intel_encoder *encoder;
+	int ret;
if (!HAS_DISPLAY(dev_priv))
    	return;
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
    for_each_intel_encoder(dev, encoder)
    	if (encoder->shutdown)
    		encoder->shutdown(encoder);
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 }
void i915_driver_shutdown(struct drm_i915_private *i915)
-- 
2.33.0


    

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[PATCH v3 12/20] drm/i915: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()