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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/char/tpm/tpm-dev.h
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@@ -2,27 +2,32 @@
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 #ifndef _TPM_DEV_H
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 #define _TPM_DEV_H
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+#include <linux/poll.h>
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 #include "tpm.h"
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 struct file_priv {
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 	struct tpm_chip *chip;
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+	struct tpm_space *space;
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-	/* Data passed to and from the tpm via the read/write calls */
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-	size_t data_pending;
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 	struct mutex buffer_mutex;
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-
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 	struct timer_list user_read_timer;      /* user needs to claim result */
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-	struct work_struct work;
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+	struct work_struct timeout_work;
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+	struct work_struct async_work;
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+	wait_queue_head_t async_wait;
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+	ssize_t response_length;
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+	bool response_read;
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+	bool command_enqueued;
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 	u8 data_buffer[TPM_BUFSIZE];
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 };
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 void tpm_common_open(struct file *file, struct tpm_chip *chip,
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-		     struct file_priv *priv);
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+		     struct file_priv *priv, struct tpm_space *space);
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 ssize_t tpm_common_read(struct file *file, char __user *buf,
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 			size_t size, loff_t *off);
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 ssize_t tpm_common_write(struct file *file, const char __user *buf,
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-			 size_t size, loff_t *off, struct tpm_space *space);
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-void tpm_common_release(struct file *file, struct file_priv *priv);
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+			 size_t size, loff_t *off);
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+__poll_t tpm_common_poll(struct file *file, poll_table *wait);
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+void tpm_common_release(struct file *file, struct file_priv *priv);
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 #endif