rt_device_write/read return data type as rt_ssize_t

rt_ssize_t can give negative error code, which follows the unix style correctly

9 files changed, 41 insertions, 41 deletions

diff --git a/components/drivers/usb/usbdevice/class/cdc_vcom.c b/components/drivers/usb/usbdevice/class/cdc_vcom.c
index 89d03caf88..29d3e25174 100644
--- a/components/drivers/usb/usbdevice/class/cdc_vcom.c
+++ b/components/drivers/usb/usbdevice/class/cdc_vcom.c
@@ -721,7 +721,7 @@ static int _vcom_getc(struct rt_serial_device *serial)
     return result;
 }
 
-static rt_size_t _vcom_rb_block_put(struct vcom *data, const rt_uint8_t *buf, rt_size_t size)
+static rt_ssize_t _vcom_rb_block_put(struct vcom *data, const rt_uint8_t *buf, rt_size_t size)
 {
     rt_base_t level;
     rt_size_t   put_len = 0;
@@ -751,7 +751,7 @@ static rt_size_t _vcom_rb_block_put(struct vcom *data, const rt_uint8_t *buf, rt
     return size;
 }
 
-static rt_size_t _vcom_tx(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, int direction)
+static rt_ssize_t _vcom_tx(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, int direction)
 {
     struct ufunction *func;
     struct vcom *data;
diff --git a/components/drivers/usb/usbdevice/class/ecm.c b/components/drivers/usb/usbdevice/class/ecm.c
index 4f41c00531..f821a9969e 100644
--- a/components/drivers/usb/usbdevice/class/ecm.c
+++ b/components/drivers/usb/usbdevice/class/ecm.c
@@ -324,13 +324,13 @@ static rt_err_t rt_ecm_eth_close(rt_device_t dev)
     return RT_EOK;
 }
 
-static rt_size_t rt_ecm_eth_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+static rt_ssize_t rt_ecm_eth_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
 {
     rt_set_errno(-RT_ENOSYS);
     return 0;
 }
 
-static rt_size_t rt_ecm_eth_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+static rt_ssize_t rt_ecm_eth_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
 {
     rt_set_errno(-RT_ENOSYS);
     return 0;
diff --git a/components/drivers/usb/usbdevice/class/hid.c b/components/drivers/usb/usbdevice/class/hid.c
index a95e1d82e5..d2bb05ed24 100644
--- a/components/drivers/usb/usbdevice/class/hid.c
+++ b/components/drivers/usb/usbdevice/class/hid.c
@@ -594,7 +594,7 @@ static rt_err_t _hid_descriptor_config(uhid_comm_desc_t hid, rt_uint8_t cintf_nr
 
     return RT_EOK;
 }
-static rt_size_t _hid_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
+static rt_ssize_t _hid_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
 {
     struct hid_s *hiddev = (struct hid_s *)dev;
     struct hid_report report;
diff --git a/components/drivers/usb/usbdevice/class/mstorage.c b/components/drivers/usb/usbdevice/class/mstorage.c
index b8f21a29df..96a1299890 100644
--- a/components/drivers/usb/usbdevice/class/mstorage.c
+++ b/components/drivers/usb/usbdevice/class/mstorage.c
@@ -44,7 +44,7 @@ typedef enum
     DIR_NONE,
 }CB_DIR;
 
-typedef rt_size_t (*cbw_handler)(ufunction_t func, ustorage_cbw_t cbw);
+typedef rt_ssize_t (*cbw_handler)(ufunction_t func, ustorage_cbw_t cbw);
 
 struct scsi_cmd
 {
@@ -168,17 +168,17 @@ const static char* _ustring[] =
     "Interface",
 };
 
-static rt_size_t _test_unit_ready(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _request_sense(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _inquiry_cmd(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _allow_removal(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _start_stop(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _mode_sense_6(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _read_capacities(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _read_capacity(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _read_10(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _write_10(ufunction_t func, ustorage_cbw_t cbw);
-static rt_size_t _verify_10(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _test_unit_ready(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _request_sense(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _inquiry_cmd(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _allow_removal(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _start_stop(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _mode_sense_6(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _read_capacities(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _read_capacity(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _read_10(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _write_10(ufunction_t func, ustorage_cbw_t cbw);
+static rt_ssize_t _verify_10(ufunction_t func, ustorage_cbw_t cbw);
 
 rt_align(4)
 static struct scsi_cmd cmd_data[] =
@@ -212,7 +212,7 @@ static void _send_status(ufunction_t func)
     data->status = STAT_CSW;
 }
 
-static rt_size_t _test_unit_ready(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _test_unit_ready(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
 
@@ -227,7 +227,7 @@ static rt_size_t _test_unit_ready(ufunction_t func, ustorage_cbw_t cbw)
     return 0;
 }
 
-static rt_size_t _allow_removal(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _allow_removal(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
 
@@ -251,7 +251,7 @@ static rt_size_t _allow_removal(ufunction_t func, ustorage_cbw_t cbw)
  * @return RT_EOK on successful.
  */
 
-static rt_size_t _inquiry_cmd(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _inquiry_cmd(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
     rt_uint8_t *buf;
@@ -290,7 +290,7 @@ static rt_size_t _inquiry_cmd(ufunction_t func, ustorage_cbw_t cbw)
  *
  * @return RT_EOK on successful.
  */
-static rt_size_t _request_sense(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _request_sense(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
     struct request_sense_data *buf;
@@ -333,7 +333,7 @@ static rt_size_t _request_sense(ufunction_t func, ustorage_cbw_t cbw)
  *
  * @return RT_EOK on successful.
  */
-static rt_size_t _mode_sense_6(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _mode_sense_6(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
     rt_uint8_t *buf;
@@ -369,7 +369,7 @@ static rt_size_t _mode_sense_6(ufunction_t func, ustorage_cbw_t cbw)
  *
  * @return RT_EOK on successful.
  */
-static rt_size_t _read_capacities(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _read_capacities(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
     rt_uint8_t *buf;
@@ -414,7 +414,7 @@ static rt_size_t _read_capacities(ufunction_t func, ustorage_cbw_t cbw)
  *
  * @return RT_EOK on successful.
  */
-static rt_size_t _read_capacity(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _read_capacity(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
 
@@ -459,7 +459,7 @@ static rt_size_t _read_capacity(ufunction_t func, ustorage_cbw_t cbw)
  *
  * @return RT_EOK on successful.
  */
-static rt_size_t _read_10(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _read_10(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
     rt_size_t size;
@@ -499,7 +499,7 @@ static rt_size_t _read_10(ufunction_t func, ustorage_cbw_t cbw)
  *
  * @return RT_EOK on successful.
  */
-static rt_size_t _write_10(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _write_10(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
 
@@ -536,7 +536,7 @@ static rt_size_t _write_10(ufunction_t func, ustorage_cbw_t cbw)
  *
  * @return RT_EOK on successful.
  */
-static rt_size_t _verify_10(ufunction_t func, ustorage_cbw_t cbw)
+static rt_ssize_t _verify_10(ufunction_t func, ustorage_cbw_t cbw)
 {
     struct mstorage *data;
 
@@ -551,7 +551,7 @@ static rt_size_t _verify_10(ufunction_t func, ustorage_cbw_t cbw)
     return 0;
 }
 
-static rt_size_t _start_stop(ufunction_t func,
+static rt_ssize_t _start_stop(ufunction_t func,
     ustorage_cbw_t cbw)
 {
     struct mstorage *data;
@@ -795,7 +795,7 @@ static rt_bool_t _cbw_verify(ufunction_t func, struct scsi_cmd* cmd,
     return RT_TRUE;
 }
 
-static rt_size_t _cbw_handler(ufunction_t func, struct scsi_cmd* cmd,
+static rt_ssize_t _cbw_handler(ufunction_t func, struct scsi_cmd* cmd,
     ustorage_cbw_t cbw)
 {
     struct mstorage *data;
diff --git a/components/drivers/usb/usbdevice/class/rndis.c b/components/drivers/usb/usbdevice/class/rndis.c
index 425ff62ee1..449957db2e 100644
--- a/components/drivers/usb/usbdevice/class/rndis.c
+++ b/components/drivers/usb/usbdevice/class/rndis.c
@@ -1083,13 +1083,13 @@ static rt_err_t rt_rndis_eth_close(rt_device_t dev)
     return RT_EOK;
 }
 
-static rt_size_t rt_rndis_eth_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+static rt_ssize_t rt_rndis_eth_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
 {
     rt_set_errno(-RT_ENOSYS);
     return 0;
 }
 
-static rt_size_t rt_rndis_eth_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+static rt_ssize_t rt_rndis_eth_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
 {
     rt_set_errno(-RT_ENOSYS);
     return 0;
diff --git a/components/drivers/usb/usbdevice/class/winusb.c b/components/drivers/usb/usbdevice/class/winusb.c
index 4e534399be..cf72ce8d84 100644
--- a/components/drivers/usb/usbdevice/class/winusb.c
+++ b/components/drivers/usb/usbdevice/class/winusb.c
@@ -227,7 +227,7 @@ static rt_err_t _winusb_descriptor_config(winusb_desc_t winusb, rt_uint8_t cintf
     return RT_EOK;
 }
 
-static rt_size_t win_usb_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
+static rt_ssize_t win_usb_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
 {
     if(((ufunction_t)dev->user_data)->device->state != USB_STATE_CONFIGURED)
     {
@@ -241,7 +241,7 @@ static rt_size_t win_usb_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_si
     rt_usbd_io_request(((ufunction_t)dev->user_data)->device,winusb_device->ep_out,&winusb_device->ep_out->request);
     return size;
 }
-static rt_size_t win_usb_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
+static rt_ssize_t win_usb_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
 {
     if(((ufunction_t)dev->user_data)->device->state != USB_STATE_CONFIGURED)
     {
diff --git a/components/drivers/usb/usbdevice/core/usbdevice_core.c b/components/drivers/usb/usbdevice/core/usbdevice_core.c
index 58d7170012..03f231dcef 100644
--- a/components/drivers/usb/usbdevice/core/usbdevice_core.c
+++ b/components/drivers/usb/usbdevice/core/usbdevice_core.c
@@ -19,8 +19,8 @@
 
 static rt_list_t device_list;
 
-static rt_size_t rt_usbd_ep_write(udevice_t device, uep_t ep, void *buffer, rt_size_t size);
-static rt_size_t rt_usbd_ep_read_prepare(udevice_t device, uep_t ep, void *buffer, rt_size_t size);
+static rt_ssize_t rt_usbd_ep_write(udevice_t device, uep_t ep, void *buffer, rt_size_t size);
+static rt_ssize_t rt_usbd_ep_read_prepare(udevice_t device, uep_t ep, void *buffer, rt_size_t size);
 static rt_err_t rt_usbd_ep_assign(udevice_t device, uep_t ep);
 rt_err_t rt_usbd_ep_unassign(udevice_t device, uep_t ep);
 
@@ -962,7 +962,7 @@ static rt_err_t _stop_notify(udevice_t device)
     return RT_EOK;
 }
 
-static rt_size_t rt_usbd_ep_write(udevice_t device, uep_t ep, void *buffer, rt_size_t size)
+static rt_ssize_t rt_usbd_ep_write(udevice_t device, uep_t ep, void *buffer, rt_size_t size)
 {
     rt_uint16_t maxpacket;
 
@@ -988,7 +988,7 @@ static rt_size_t rt_usbd_ep_write(udevice_t device, uep_t ep, void *buffer, rt_s
     return size;
 }
 
-static rt_size_t rt_usbd_ep_read_prepare(udevice_t device, uep_t ep, void *buffer, rt_size_t size)
+static rt_ssize_t rt_usbd_ep_read_prepare(udevice_t device, uep_t ep, void *buffer, rt_size_t size)
 {
     RT_ASSERT(device != RT_NULL);
     RT_ASSERT(device->dcd != RT_NULL);
diff --git a/components/drivers/usb/usbhost/class/adk.c b/components/drivers/usb/usbhost/class/adk.c
index 492a2f9bb7..3475214789 100644
--- a/components/drivers/usb/usbhost/class/adk.c
+++ b/components/drivers/usb/usbhost/class/adk.c
@@ -149,7 +149,7 @@ static rt_err_t rt_usbh_adk_start(struct uintf* intf)
  *
  * @return the error code, RT_EOK on successfully.
 */
-static rt_size_t rt_usbh_adk_read(rt_device_t device, rt_off_t pos, void* buffer,
+static rt_ssize_t rt_usbh_adk_read(rt_device_t device, rt_off_t pos, void* buffer,
     rt_size_t size)
 {
     uadk_t adk;
@@ -177,7 +177,7 @@ static rt_size_t rt_usbh_adk_read(rt_device_t device, rt_off_t pos, void* buffer
  *
  * @return the error code, RT_EOK on successfully.
 */
-static rt_size_t rt_usbh_adk_write (rt_device_t device, rt_off_t pos, const void* buffer,
+static rt_ssize_t rt_usbh_adk_write (rt_device_t device, rt_off_t pos, const void* buffer,
     rt_size_t size)
 {
     uadk_t adk;
diff --git a/components/drivers/usb/usbhost/class/udisk.c b/components/drivers/usb/usbhost/class/udisk.c
index 8be311e657..ee0129b487 100644
--- a/components/drivers/usb/usbhost/class/udisk.c
+++ b/components/drivers/usb/usbhost/class/udisk.c
@@ -64,7 +64,7 @@ static rt_err_t rt_udisk_init(rt_device_t dev)
  *
  * @return the actually read size on successful, otherwise negative returned.
  */
-static rt_size_t rt_udisk_read(rt_device_t dev, rt_off_t pos, void* buffer,
+static rt_ssize_t rt_udisk_read(rt_device_t dev, rt_off_t pos, void* buffer,
     rt_size_t size)
 {
     rt_err_t ret;
@@ -102,7 +102,7 @@ static rt_size_t rt_udisk_read(rt_device_t dev, rt_off_t pos, void* buffer,
  *
  * @return the actually written size on successful, otherwise negative returned.
  */
-static rt_size_t rt_udisk_write (rt_device_t dev, rt_off_t pos, const void* buffer,
+static rt_ssize_t rt_udisk_write (rt_device_t dev, rt_off_t pos, const void* buffer,
     rt_size_t size)
 {
     rt_err_t ret;