mei: revamp host buffer interface function
1. Use unified _hbuf_ prefix for host/write buffer functions.
2. Cleanup the code w/o functional changes.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/interface.c b/drivers/misc/mei/interface.c
index 784a606..88ada64 100644
--- a/drivers/misc/mei/interface.c
+++ b/drivers/misc/mei/interface.c
@@ -58,16 +58,18 @@
}
/**
- * _host_get_filled_slots - gets number of device filled buffer slots
+ * mei_hbuf_filled_slots - gets number of device filled buffer slots
*
* @device: the device structure
*
* returns number of filled slots
*/
-static unsigned char _host_get_filled_slots(const struct mei_device *dev)
+static unsigned char mei_hbuf_filled_slots(struct mei_device *dev)
{
char read_ptr, write_ptr;
+ dev->host_hw_state = mei_hcsr_read(dev);
+
read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8);
write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16);
@@ -75,38 +77,29 @@
}
/**
- * mei_host_buffer_is_empty - checks if host buffer is empty.
+ * mei_hbuf_is_empty - checks if host buffer is empty.
*
* @dev: the device structure
*
- * returns 1 if empty, 0 - otherwise.
+ * returns true if empty, false - otherwise.
*/
-int mei_host_buffer_is_empty(struct mei_device *dev)
+bool mei_hbuf_is_empty(struct mei_device *dev)
{
- unsigned char filled_slots;
-
- dev->host_hw_state = mei_hcsr_read(dev);
- filled_slots = _host_get_filled_slots(dev);
-
- if (filled_slots == 0)
- return 1;
-
- return 0;
+ return mei_hbuf_filled_slots(dev) == 0;
}
/**
- * mei_count_empty_write_slots - counts write empty slots.
+ * mei_hbuf_empty_slots - counts write empty slots.
*
* @dev: the device structure
*
* returns -1(ESLOTS_OVERFLOW) if overflow, otherwise empty slots count
*/
-int mei_count_empty_write_slots(struct mei_device *dev)
+int mei_hbuf_empty_slots(struct mei_device *dev)
{
unsigned char filled_slots, empty_slots;
- dev->host_hw_state = mei_hcsr_read(dev);
- filled_slots = _host_get_filled_slots(dev);
+ filled_slots = mei_hbuf_filled_slots(dev);
empty_slots = dev->hbuf_depth - filled_slots;
/* check for overflow */
@@ -139,7 +132,7 @@
"mei_write_message header=%08x.\n",
*((u32 *) header));
- empty_slots = mei_count_empty_write_slots(dev);
+ empty_slots = mei_hbuf_empty_slots(dev);
dev_dbg(&dev->pdev->dev, "empty slots = %hu.\n", empty_slots);
dw_cnt = (length + sizeof(*header) + 3) / 4;