tpm/vtpm: fix kdoc warnings

Use corret kdoc format for function description and eliminate warning
of type:

tpm_ibmvtpm.c:66: warning: No description found for parameter 'count'
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

drivers/char/tpm/tpm_ibmvtpm.c

@@ -40,11 +40,12 @@ MODULE_DEVICE_TABLE(vio, tpm_ibmvtpm_device_table);
 
 /**
  * ibmvtpm_send_crq - Send a CRQ request
+ *
  * @vdev:	vio device struct
  * @w1:		first word
  * @w2:		second word
  *
- * Return value:
+ * Return:
  *	0 -Sucess
  *	Non-zero - Failure
  */
@@ -55,11 +56,12 @@ static int ibmvtpm_send_crq(struct vio_dev *vdev, u64 w1, u64 w2)
 
 /**
  * tpm_ibmvtpm_recv - Receive data after send
+ *
  * @chip:	tpm chip struct
  * @buf:	buffer to read
- * count:	size of buffer
+ * @count:	size of buffer
  *
- * Return value:
+ * Return:
  *	Number of bytes read
  */
 static int tpm_ibmvtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count)
@@ -96,12 +98,13 @@ static int tpm_ibmvtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 
 /**
  * tpm_ibmvtpm_send - Send tpm request
+ *
  * @chip:	tpm chip struct
  * @buf:	buffer contains data to send
- * count:	size of buffer
+ * @count:	size of buffer
  *
- * Return value:
- *	Number of bytes sent
+ * Return:
+ *	Number of bytes sent or < 0 on error.
  */
 static int tpm_ibmvtpm_send(struct tpm_chip *chip, u8 *buf, size_t count)
 {
@@ -170,11 +173,12 @@ static u8 tpm_ibmvtpm_status(struct tpm_chip *chip)
 
 /**
  * ibmvtpm_crq_get_rtce_size - Send a CRQ request to get rtce size
+ *
  * @ibmvtpm:	vtpm device struct
  *
- * Return value:
- *	0 - Success
- *	Non-zero - Failure
+ * Return:
+ *	0 on success.
+ *	Non-zero on failure.
  */
 static int ibmvtpm_crq_get_rtce_size(struct ibmvtpm_dev *ibmvtpm)
 {
@@ -197,11 +201,12 @@ static int ibmvtpm_crq_get_rtce_size(struct ibmvtpm_dev *ibmvtpm)
 /**
  * ibmvtpm_crq_get_version - Send a CRQ request to get vtpm version
  *			   - Note that this is vtpm version and not tpm version
+ *
  * @ibmvtpm:	vtpm device struct
  *
- * Return value:
- *	0 - Success
- *	Non-zero - Failure
+ * Return:
+ *	0 on success.
+ *	Non-zero on failure.
  */
 static int ibmvtpm_crq_get_version(struct ibmvtpm_dev *ibmvtpm)
 {
@@ -225,9 +230,9 @@ static int ibmvtpm_crq_get_version(struct ibmvtpm_dev *ibmvtpm)
  * ibmvtpm_crq_send_init_complete - Send a CRQ initialize complete message
  * @ibmvtpm:	vtpm device struct
  *
- * Return value:
- *	0 - Success
- *	Non-zero - Failure
+ * Return:
+ *	0 on success.
+ *	Non-zero on failure.
  */
 static int ibmvtpm_crq_send_init_complete(struct ibmvtpm_dev *ibmvtpm)
 {
@@ -245,9 +250,9 @@ static int ibmvtpm_crq_send_init_complete(struct ibmvtpm_dev *ibmvtpm)
  * ibmvtpm_crq_send_init - Send a CRQ initialize message
  * @ibmvtpm:	vtpm device struct
  *
- * Return value:
- *	0 - Success
- *	Non-zero - Failure
+ * Return:
+ *	0 on success.
+ *	Non-zero on failure.
  */
 static int ibmvtpm_crq_send_init(struct ibmvtpm_dev *ibmvtpm)
 {
@@ -265,8 +270,7 @@ static int ibmvtpm_crq_send_init(struct ibmvtpm_dev *ibmvtpm)
  * tpm_ibmvtpm_remove - ibm vtpm remove entry point
  * @vdev:	vio device struct
  *
- * Return value:
- *	0
+ * Return: Always 0.
  */
 static int tpm_ibmvtpm_remove(struct vio_dev *vdev)
 {
@@ -303,18 +307,19 @@ static int tpm_ibmvtpm_remove(struct vio_dev *vdev)
  * tpm_ibmvtpm_get_desired_dma - Get DMA size needed by this driver
  * @vdev:	vio device struct
  *
- * Return value:
- *	Number of bytes the driver needs to DMA map
+ * Return:
+ *	Number of bytes the driver needs to DMA map.
  */
 static unsigned long tpm_ibmvtpm_get_desired_dma(struct vio_dev *vdev)
 {
 	struct tpm_chip *chip = dev_get_drvdata(&vdev->dev);
 	struct ibmvtpm_dev *ibmvtpm = dev_get_drvdata(&chip->dev);
 
-	/* ibmvtpm initializes at probe time, so the data we are
-	* asking for may not be set yet. Estimate that 4K required
-	* for TCE-mapped buffer in addition to CRQ.
-	*/
+	/*
+	 * ibmvtpm initializes at probe time, so the data we are
+	 * asking for may not be set yet. Estimate that 4K required
+	 * for TCE-mapped buffer in addition to CRQ.
+	 */
 	if (!ibmvtpm)
 		return CRQ_RES_BUF_SIZE + PAGE_SIZE;
 
@@ -325,8 +330,7 @@ static unsigned long tpm_ibmvtpm_get_desired_dma(struct vio_dev *vdev)
  * tpm_ibmvtpm_suspend - Suspend
  * @dev:	device struct
  *
- * Return value:
- *	0
+ * Return: Always 0.
  */
 static int tpm_ibmvtpm_suspend(struct device *dev)
 {
@@ -350,11 +354,12 @@ static int tpm_ibmvtpm_suspend(struct device *dev)
 
 /**
  * ibmvtpm_reset_crq - Reset CRQ
+ *
  * @ibmvtpm:	ibm vtpm struct
  *
- * Return value:
- *	0 - Success
- *	Non-zero - Failure
+ * Return:
+ *	0 on success.
+ *	Non-zero on failure.
  */
 static int ibmvtpm_reset_crq(struct ibmvtpm_dev *ibmvtpm)
 {
@@ -376,10 +381,10 @@ static int ibmvtpm_reset_crq(struct ibmvtpm_dev *ibmvtpm)
 
 /**
  * tpm_ibmvtpm_resume - Resume from suspend
+ *
  * @dev:	device struct
  *
- * Return value:
- *	0
+ * Return: Always 0.
  */
 static int tpm_ibmvtpm_resume(struct device *dev)
 {
@@ -434,10 +439,10 @@ static const struct dev_pm_ops tpm_ibmvtpm_pm_ops = {
 
 /**
  * ibmvtpm_crq_get_next - Get next responded crq
- * @ibmvtpm	vtpm device struct
  *
- * Return value:
- *	vtpm crq pointer
+ * @ibmvtpm:	vtpm device struct
+ *
+ * Return: vtpm crq pointer or NULL.
  */
 static struct ibmvtpm_crq *ibmvtpm_crq_get_next(struct ibmvtpm_dev *ibmvtpm)
 {
@@ -455,11 +460,10 @@ static struct ibmvtpm_crq *ibmvtpm_crq_get_next(struct ibmvtpm_dev *ibmvtpm)
 
 /**
  * ibmvtpm_crq_process - Process responded crq
- * @crq		crq to be processed
- * @ibmvtpm	vtpm device struct
  *
- * Return value:
- *	Nothing
+ * @crq:	crq to be processed
+ * @ibmvtpm:	vtpm device struct
+ *
  */
 static void ibmvtpm_crq_process(struct ibmvtpm_crq *crq,
 				struct ibmvtpm_dev *ibmvtpm)
@@ -528,6 +532,7 @@ static void ibmvtpm_crq_process(struct ibmvtpm_crq *crq,
 
 /**
  * ibmvtpm_interrupt -	Interrupt handler
+ *
  * @irq:		irq number to handle
  * @vtpm_instance:	vtpm that received interrupt
  *
@@ -554,12 +559,13 @@ static irqreturn_t ibmvtpm_interrupt(int irq, void *vtpm_instance)
 
 /**
  * tpm_ibmvtpm_probe - ibm vtpm initialize entry point
+ *
  * @vio_dev:	vio device struct
  * @id:		vio device id struct
  *
- * Return value:
- *	0 - Success
- *	Non-zero - Failure
+ * Return:
+ *	0 on success.
+ *	Non-zero on failure.
  */
 static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 				   const struct vio_device_id *id)
@@ -671,11 +677,12 @@ static struct vio_driver ibmvtpm_driver = {
 };
 
 /**
- * ibmvtpm_module_init - Initialize ibm vtpm module
+ * ibmvtpm_module_init - Initialize ibm vtpm module.
  *
- * Return value:
- *	0 -Success
- *	Non-zero - Failure
+ *
+ * Return:
+ *	0 on success.
+ *	Non-zero on failure.
  */
 static int __init ibmvtpm_module_init(void)
 {
@@ -683,10 +690,7 @@ static int __init ibmvtpm_module_init(void)
 }
 
 /**
- * ibmvtpm_module_exit - Teardown ibm vtpm module
- *
- * Return value:
- *	Nothing
+ * ibmvtpm_module_exit - Tear down ibm vtpm module.
  */
 static void __exit ibmvtpm_module_exit(void)
 {

drivers/char/tpm/tpm_vtpm_proxy.c

@@ -65,7 +65,12 @@ static void vtpm_proxy_delete_device(struct proxy_dev *proxy_dev);
 /**
  * vtpm_proxy_fops_read - Read TPM commands on 'server side'
  *
- * Return value:
+ * @filp: file pointer
+ * @buf: read buffer
+ * @count: number of bytes to read
+ * @off: offset
+ *
+ * Return:
  *	Number of bytes read or negative error code
  */
 static ssize_t vtpm_proxy_fops_read(struct file *filp, char __user *buf,
@@ -115,7 +120,12 @@ static ssize_t vtpm_proxy_fops_read(struct file *filp, char __user *buf,
 /**
  * vtpm_proxy_fops_write - Write TPM responses on 'server side'
  *
- * Return value:
+ * @filp: file pointer
+ * @buf: write buffer
+ * @count: number of bytes to write
+ * @off: offset
+ *
+ * Return:
  *	Number of bytes read or negative error value
  */
 static ssize_t vtpm_proxy_fops_write(struct file *filp, const char __user *buf,
@@ -155,10 +165,12 @@ static ssize_t vtpm_proxy_fops_write(struct file *filp, const char __user *buf,
 }
 
 /*
- * vtpm_proxy_fops_poll: Poll status on 'server side'
+ * vtpm_proxy_fops_poll - Poll status on 'server side'
+ *
+ * @filp: file pointer
+ * @wait: poll table
  *
- * Return value:
- *      Poll flags
+ * Return: Poll flags
  */
 static unsigned int vtpm_proxy_fops_poll(struct file *filp, poll_table *wait)
 {
@@ -185,6 +197,8 @@ static unsigned int vtpm_proxy_fops_poll(struct file *filp, poll_table *wait)
 /*
  * vtpm_proxy_fops_open - Open vTPM device on 'server side'
  *
+ * @filp: file pointer
+ *
  * Called when setting up the anonymous file descriptor
  */
 static void vtpm_proxy_fops_open(struct file *filp)
@@ -196,8 +210,9 @@ static void vtpm_proxy_fops_open(struct file *filp)
 
 /**
  * vtpm_proxy_fops_undo_open - counter-part to vtpm_fops_open
+ *       Call to undo vtpm_proxy_fops_open
  *
- * Call to undo vtpm_proxy_fops_open
+ *@proxy_dev: tpm proxy device
  */
 static void vtpm_proxy_fops_undo_open(struct proxy_dev *proxy_dev)
 {
@@ -212,9 +227,11 @@ static void vtpm_proxy_fops_undo_open(struct proxy_dev *proxy_dev)
 }
 
 /*
- * vtpm_proxy_fops_release: Close 'server side'
+ * vtpm_proxy_fops_release - Close 'server side'
  *
- * Return value:
+ * @inode: inode
+ * @filp: file pointer
+ * Return:
  *      Always returns 0.
  */
 static int vtpm_proxy_fops_release(struct inode *inode, struct file *filp)
@@ -245,7 +262,10 @@ static const struct file_operations vtpm_proxy_fops = {
 /*
  * Called when core TPM driver reads TPM responses from 'server side'
  *
- * Return value:
+ * @chip: tpm chip to use
+ * @buf: receive buffer
+ * @count: bytes to read
+ * Return:
  *      Number of TPM response bytes read, negative error value otherwise
  */
 static int vtpm_proxy_tpm_op_recv(struct tpm_chip *chip, u8 *buf, size_t count)
@@ -282,7 +302,11 @@ static int vtpm_proxy_tpm_op_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 /*
  * Called when core TPM driver forwards TPM requests to 'server side'.
  *
- * Return value:
+ * @chip: tpm chip to use
+ * @buf: send buffer
+ * @count: bytes to send
+ *
+ * Return:
  *      0 in case of success, negative error value otherwise.
  */
 static int vtpm_proxy_tpm_op_send(struct tpm_chip *chip, u8 *buf, size_t count)
@@ -442,7 +466,7 @@ static inline void vtpm_proxy_delete_proxy_dev(struct proxy_dev *proxy_dev)
 /*
  * Create a /dev/tpm%d and 'server side' file descriptor pair
  *
- * Return value:
+ * Return:
  *      Returns file pointer on success, an error value otherwise
  */
 static struct file *vtpm_proxy_create_device(
@@ -571,7 +595,7 @@ static long vtpmx_ioc_new_dev(struct file *file, unsigned int ioctl,
 /*
  * vtpmx_fops_ioctl: ioctl on /dev/vtpmx
  *
- * Return value:
+ * Return:
  *      Returns 0 on success, a negative error code otherwise.
  */
 static long vtpmx_fops_ioctl(struct file *f, unsigned int ioctl,