summaryrefslogtreecommitdiffstats
path: root/drivers/hid
diff options
context:
space:
mode:
authorJiri Kosina <jkosina@suse.cz>2014-01-06 16:43:27 +0100
committerJiri Kosina <jkosina@suse.cz>2014-01-06 16:43:27 +0100
commit618345359ed99a78e63f5cef8a09a8494589ee11 (patch)
tree2f801d6862136d390ee1d6bf83849af13a08c66a /drivers/hid
parentHID: input: fix input sysfs path for hid devices (diff)
downloadlinux-618345359ed99a78e63f5cef8a09a8494589ee11.tar.xz
linux-618345359ed99a78e63f5cef8a09a8494589ee11.zip
HID: hidraw: make comment more accurate and nicer
Reformat and reword some of the comments to make them more understandable. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hidraw.c27
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 6a6dd5cd7833..cb0137b3718d 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -6,7 +6,7 @@
* to work on raw hid events as they want to, and avoids a need to
* use a transport-specific userspace libhid/libusb libraries.
*
- * Copyright (c) 2007 Jiri Kosina
+ * Copyright (c) 2007-2014 Jiri Kosina
*/
/*
@@ -104,8 +104,11 @@ out:
return ret;
}
-/* The first byte is expected to be a report number.
- * This function is to be called with the minors_lock mutex held */
+/*
+ * The first byte of the report buffer is expected to be a report number.
+ *
+ * This function is to be called with the minors_lock mutex held.
+ */
static ssize_t hidraw_send_report(struct file *file, const char __user *buffer, size_t count, unsigned char report_type)
{
unsigned int minor = iminor(file_inode(file));
@@ -157,7 +160,6 @@ out:
return ret;
}
-/* the first byte is expected to be a report number */
static ssize_t hidraw_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
ssize_t ret;
@@ -168,12 +170,15 @@ static ssize_t hidraw_write(struct file *file, const char __user *buffer, size_t
}
-/* This function performs a Get_Report transfer over the control endpoint
+/*
+ * This function performs a Get_Report transfer over the control endpoint
* per section 7.2.1 of the HID specification, version 1.1. The first byte
* of buffer is the report number to request, or 0x0 if the defice does not
* use numbered reports. The report_type parameter can be HID_FEATURE_REPORT
- * or HID_INPUT_REPORT. This function is to be called with the minors_lock
- * mutex held. */
+ * or HID_INPUT_REPORT.
+ *
+ * This function is to be called with the minors_lock mutex held.
+ */
static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t count, unsigned char report_type)
{
unsigned int minor = iminor(file_inode(file));
@@ -209,8 +214,10 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t
goto out;
}
- /* Read the first byte from the user. This is the report number,
- * which is passed to dev->hid_get_raw_report(). */
+ /*
+ * Read the first byte from the user. This is the report number,
+ * which is passed to dev->hid_get_raw_report().
+ */
if (copy_from_user(&report_number, buffer, 1)) {
ret = -EFAULT;
goto out_free;
@@ -498,7 +505,7 @@ int hidraw_connect(struct hid_device *hid)
int minor, result;
struct hidraw *dev;
- /* we accept any HID device, no matter the applications */
+ /* we accept any HID device, all applications */
dev = kzalloc(sizeof(struct hidraw), GFP_KERNEL);
if (!dev)