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Make libratbag-hidraw return negative errnos on error

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Be consistent here.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer
2015-08-21 08:53:12 +10:00
parent 7ddbadffbb
commit 7f2d060ff9
4 changed files with 12 additions and 9 deletions
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4
src/hidpp10.c
View File

@@ -82,7 +82,7 @@ static int hidpp10_write_command(struct ratbag_device *device, __u8 *cmd, int si
return 0;
if (res < 0)
log_error(device->ratbag, "Error: %d\n", errno);
log_error(device->ratbag, "Error: %d\n", -res);
return res;
}
@@ -149,7 +149,7 @@ int hidpp10_request_command(struct ratbag_device *device, union hidpp10_message
} while (ret > 0);
if (ret < 0) {
log_error(ratbag, " USB error: %d\n", errno);
log_error(ratbag, " USB error: %d\n", -ret);
perror("write");
goto out_err;
}

4
src/hidpp20.c
View File

@@ -49,7 +49,7 @@ hidpp20_write_command(struct ratbag_device *device, uint8_t *cmd, int size)
return 0;
if (res < 0)
log_error(device->ratbag, "Error: %d\n", errno);
log_error(device->ratbag, "Error: %d\n", -res);
return res;
}
@@ -104,7 +104,7 @@ hidpp20_request_command(struct ratbag_device *device, union hidpp20_message *msg
} while (ret > 0);
if (ret < 0) {
log_error(ratbag, " USB error: %d\n", errno);
log_error(ratbag, " USB error: %d\n", -ret);
perror("write");
goto out_err;
}

7
src/libratbag-hidraw.c
View File

@@ -128,7 +128,7 @@ ratbag_hidraw_output_report(struct ratbag_device *ratbag, uint8_t *buf, size_t l
rc = write(ratbag->hidraw_fd, buf, len);
if (rc < 0)
return rc;
return -errno;
if (rc != (int)len)
return -EIO;
@@ -139,8 +139,11 @@ ratbag_hidraw_output_report(struct ratbag_device *ratbag, uint8_t *buf, size_t l
int
ratbag_hidraw_read_input_report(struct ratbag_device *ratbag, uint8_t *buf, size_t len)
{
int rc;
if (len < 1 || !buf || ratbag->hidraw_fd < 0)
return -EINVAL;
return read(ratbag->hidraw_fd, buf, len);
rc = read(ratbag->hidraw_fd, buf, len);
return rc >= 0 ? rc : -errno;
}

6
src/libratbag-hidraw.h
View File

@@ -46,7 +46,7 @@ int ratbag_open_hidraw(struct ratbag_device *ratbag);
* @rtype: HID report type
* @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT
*
* @return: count of data transfered, negative if error
* @return count of data transfered, or a negative errno on error
*
* Same behavior as hid_hw_request, but with raw buffers instead.
*/
@@ -61,7 +61,7 @@ int ratbag_hidraw_raw_request(struct ratbag_device *ratbag, unsigned char report
* @buf: raw data to transfer
* @len: length of buf
*
* @return: count of data transfered, negative if error
* @return count of data transfered, or a negative errno on error
*/
int ratbag_hidraw_output_report(struct ratbag_device *ratbag, uint8_t *buf, size_t len);
@@ -72,7 +72,7 @@ int ratbag_hidraw_output_report(struct ratbag_device *ratbag, uint8_t *buf, size
* @buf: resulting raw data
* @len: length of buf
*
* @return: count of data transfered, negative if error
* @return count of data transfered, or a negative errno on error
*/
int ratbag_hidraw_read_input_report(struct ratbag_device *ratbag, uint8_t *buf, size_t len);