Changeset 46577995 in mainline for uspace/srv/hid/isdv4_tablet/isdv4.c

Timestamp:

2018-01-04T20:50:52Z (7 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Children:

e211ea04

Parents:

facacc71

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-01-04 20:47:53)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-01-04 20:50:52)

Message:

Use errno_t in all uspace and kernel code.

Change type of every variable, parameter and return value that holds an
<errno.h> constant to either errno_t (the usual case), or sys_errno_t
(some places in kernel). This is for the purpose of self-documentation,
as well as for type-checking with a bit of type definition hackery.

After this commit, HelenOS is free of code that mixes error codes with non-error
values on the assumption that error codes are negative.

File:

• uspace/srv/hid/isdv4_tablet/isdv4.c (modified) (6 diffs)

uspace/srv/hid/isdv4_tablet/isdv4.c

@@ -294 +294 @@
 }
 
-static int read_packets(isdv4_state_t *state, packet_consumer_fn consumer)
+static errno_t read_packets(isdv4_state_t *state, packet_consumer_fn consumer)
 {
         bool reading = true;
         while (reading) {
                 size_t nread;
-                int rc;
+                errno_t rc;
 
                 rc = chardev_read(state->chardev, state->buf + state->buf_end,
@@ -363 +363 @@
 static bool write_command(chardev_t *chardev, uint8_t command)
 {
-        int rc;
+        errno_t rc;
         size_t nwr;
 
@@ -370 +370 @@
 }
 
-int isdv4_init(isdv4_state_t *state, async_sess_t *sess,
+errno_t isdv4_init(isdv4_state_t *state, async_sess_t *sess,
     isdv4_event_fn event_fn)
 {
         chardev_t *chardev;
-        int rc;
+        errno_t rc;
 
         rc = chardev_open(sess, &chardev);
@@ -396 +396 @@
 }
 
-int isdv4_init_tablet(isdv4_state_t *state)
+errno_t isdv4_init_tablet(isdv4_state_t *state)
 {
         if (!write_command(state->chardev, CMD_STOP))
@@ -407 +407 @@
                 return EIO;
 
-        int rc = read_packets(state, parse_response_stylus);
+        errno_t rc = read_packets(state, parse_response_stylus);
         if (rc != EOK)
                 return rc;
@@ -424 +424 @@
 }
 
-int isdv4_read_events(isdv4_state_t *state)
+errno_t isdv4_read_events(isdv4_state_t *state)
 {
         return read_packets(state, parse_event);