modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/drivers/gpu/drm/drm_lock.c
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@@ -1,4 +1,4 @@
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-/**
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+/*
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  * \file drm_lock.c
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  * IOCTLs for locking
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  *
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@@ -36,13 +36,17 @@
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 #include <linux/export.h>
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 #include <linux/sched/signal.h>
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-#include <drm/drmP.h>
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-#include "drm_legacy.h"
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+#include <drm/drm.h>
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+#include <drm/drm_drv.h>
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+#include <drm/drm_file.h>
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+#include <drm/drm_print.h>
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+
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 #include "drm_internal.h"
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+#include "drm_legacy.h"
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 static int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
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-/**
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+/*
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  * Take the heavyweight lock.
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  *
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  * \param lock lock pointer.
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@@ -89,7 +93,7 @@
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 	return 0;
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 }
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-/**
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+/*
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  * This takes a lock forcibly and hands it to context.	Should ONLY be used
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  * inside *_unlock to give lock to kernel before calling *_dma_schedule.
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  *
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@@ -146,7 +150,7 @@
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 	return 0;
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 }
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-/**
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+/*
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  * Lock ioctl.
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  *
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  * \param inode device inode.
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@@ -166,7 +170,7 @@
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 	int ret = 0;
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 	if (!drm_core_check_feature(dev, DRIVER_LEGACY))
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-		return -EINVAL;
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+		return -EOPNOTSUPP;
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 	++file_priv->lock_count;
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@@ -239,7 +243,7 @@
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 	return 0;
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 }
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-/**
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+/*
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  * Unlock ioctl.
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  *
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  * \param inode device inode.
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@@ -256,7 +260,7 @@
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 	struct drm_master *master = file_priv->master;
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 	if (!drm_core_check_feature(dev, DRIVER_LEGACY))
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-		return -EINVAL;
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+		return -EOPNOTSUPP;
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 	if (lock->context == DRM_KERNEL_CONTEXT) {
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 		DRM_ERROR("Process %d using kernel context %d\n",
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@@ -271,7 +275,7 @@
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 	return 0;
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 }
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-/**
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+/*
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  * This function returns immediately and takes the hw lock
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  * with the kernel context if it is free, otherwise it gets the highest priority when and if
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  * it is eventually released.
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@@ -283,7 +287,6 @@
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  * This should be sufficient to wait for GPU idle without
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  * having to worry about starvation.
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  */
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-
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 void drm_legacy_idlelock_take(struct drm_lock_data *lock_data)
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 {
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 	int ret;
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@@ -327,6 +330,7 @@
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 				     struct drm_file *file_priv)
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 {
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 	struct drm_master *master = file_priv->master;
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+
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 	return (file_priv->lock_count && master->lock.hw_lock &&
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 		_DRM_LOCK_IS_HELD(master->lock.hw_lock->lock) &&
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 		master->lock.file_priv == file_priv);
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@@ -347,3 +351,23 @@
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 				     _DRM_LOCKING_CONTEXT(file_priv->master->lock.hw_lock->lock));
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 	}
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 }
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+
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+void drm_legacy_lock_master_cleanup(struct drm_device *dev, struct drm_master *master)
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+{
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+	if (!drm_core_check_feature(dev, DRIVER_LEGACY))
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+		return;
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+
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+	/*
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+	 * Since the master is disappearing, so is the
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+	 * possibility to lock.
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+	 */
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+	mutex_lock(&dev->struct_mutex);
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+	if (master->lock.hw_lock) {
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+		if (dev->sigdata.lock == master->lock.hw_lock)
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+			dev->sigdata.lock = NULL;
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+		master->lock.hw_lock = NULL;
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+		master->lock.file_priv = NULL;
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+		wake_up_interruptible_all(&master->lock.lock_queue);
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+	}
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+	mutex_unlock(&dev->struct_mutex);
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+}