[spi][5.0.0] 修正SPI设备框架中，对函数返回值类型使用不恰当的情况 (#6937)

3 files changed, 67 insertions, 67 deletions

diff --git a/components/drivers/include/drivers/spi.h b/components/drivers/include/drivers/spi.h
index 7e3842d76e..7f7c2cedcc 100644
--- a/components/drivers/include/drivers/spi.h
+++ b/components/drivers/include/drivers/spi.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2022, RT-Thread Development Team
+ * Copyright (c) 2006-2023, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -100,7 +100,7 @@ struct rt_spi_bus
 struct rt_spi_ops
 {
     rt_err_t (*configure)(struct rt_spi_device *device, struct rt_spi_configuration *configuration);
-    rt_uint32_t (*xfer)(struct rt_spi_device *device, struct rt_spi_message *message);
+    rt_ssize_t (*xfer)(struct rt_spi_device *device, struct rt_spi_message *message);
 };
 
 /**
@@ -237,8 +237,9 @@ rt_err_t rt_spi_send_then_send(struct rt_spi_device *device,
                                const void           *send_buf2,
                                rt_size_t             send_length2);
 
-rt_uint16_t rt_spi_sendrecv16(struct rt_spi_device *device,
-                              rt_uint16_t           data);
+rt_err_t rt_spi_sendrecv16(struct rt_spi_device *device,
+                           rt_uint16_t senddata,
+                           rt_uint16_t *recvdata);
 
 /**
  * This function transmits data to SPI device.
@@ -250,10 +251,10 @@ rt_uint16_t rt_spi_sendrecv16(struct rt_spi_device *device,
  *
  * @return the actual length of transmitted.
  */
-rt_size_t rt_spi_transfer(struct rt_spi_device *device,
-                          const void           *send_buf,
-                          void                 *recv_buf,
-                          rt_size_t             length);
+rt_ssize_t rt_spi_transfer(struct rt_spi_device *device,
+                           const void           *send_buf,
+                           void                 *recv_buf,
+                           rt_size_t             length);
 
 /**
  * This function transfers a message list to the SPI device.
diff --git a/components/drivers/spi/spi-bit-ops.c b/components/drivers/spi/spi-bit-ops.c
index eb6df1590a..d03e5007cf 100644
--- a/components/drivers/spi/spi-bit-ops.c
+++ b/components/drivers/spi/spi-bit-ops.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2022, RT-Thread Development Team
+ * Copyright (c) 2006-2023, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -48,7 +48,7 @@ rt_inline void spi_delay2(struct rt_spi_bit_ops *ops)
 #define MISO_IN(ops)         DIR_MISO(ops, 1)
 #define MISO_OUT(ops)        DIR_MISO(ops, 0)
 
-rt_inline rt_size_t spi_xfer_4line_data8(struct rt_spi_bit_ops       *ops,
+rt_inline rt_ssize_t spi_xfer_4line_data8(struct rt_spi_bit_ops       *ops,
                                          struct rt_spi_configuration *config,
                                          const void                  *send_buf,
                                          void                        *recv_buf,
@@ -111,7 +111,7 @@ rt_inline rt_size_t spi_xfer_4line_data8(struct rt_spi_bit_ops       *ops,
     return length;
 }
 
-rt_inline rt_size_t spi_xfer_4line_data16(struct rt_spi_bit_ops       *ops,
+rt_inline rt_ssize_t spi_xfer_4line_data16(struct rt_spi_bit_ops       *ops,
                                           struct rt_spi_configuration *config,
                                           const void                  *send_buf,
                                           void                        *recv_buf,
@@ -174,7 +174,7 @@ rt_inline rt_size_t spi_xfer_4line_data16(struct rt_spi_bit_ops       *ops,
     return length;
 }
 
-rt_inline rt_size_t spi_xfer_3line_data8(struct rt_spi_bit_ops       *ops,
+rt_inline rt_ssize_t spi_xfer_3line_data8(struct rt_spi_bit_ops       *ops,
                                          struct rt_spi_configuration *config,
                                          const void                  *send_buf,
                                          void                        *recv_buf,
@@ -275,7 +275,7 @@ rt_inline rt_size_t spi_xfer_3line_data8(struct rt_spi_bit_ops       *ops,
     return length;
 }
 
-rt_inline rt_size_t spi_xfer_3line_data16(struct rt_spi_bit_ops       *ops,
+rt_inline rt_ssize_t spi_xfer_3line_data16(struct rt_spi_bit_ops       *ops,
                                           struct rt_spi_configuration *config,
                                           const void                  *send_buf,
                                           void                        *recv_buf,
@@ -412,7 +412,7 @@ rt_err_t spi_bit_configure(struct rt_spi_device *device, struct rt_spi_configura
     return RT_EOK;
 }
 
-rt_uint32_t spi_bit_xfer(struct rt_spi_device *device, struct rt_spi_message *message)
+rt_ssize_t spi_bit_xfer(struct rt_spi_device *device, struct rt_spi_message *message)
 {
     struct rt_spi_bit_obj *obj = rt_container_of(device->bus, struct rt_spi_bit_obj, bus);
     struct rt_spi_bit_ops *ops = obj->ops;
diff --git a/components/drivers/spi/spi_core.c b/components/drivers/spi/spi_core.c
index fca542d9bb..c5e769db10 100644
--- a/components/drivers/spi/spi_core.c
+++ b/components/drivers/spi/spi_core.c
@@ -15,6 +15,10 @@
 
 #include <drivers/spi.h>
 
+#define DBG_TAG    "spi.core"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>
+
 extern rt_err_t rt_spi_bus_device_init(struct rt_spi_bus *bus, const char *name);
 extern rt_err_t rt_spidev_device_init(struct rt_spi_device *dev, const char *name);
 
@@ -148,7 +152,7 @@ rt_err_t rt_spi_send_then_send(struct rt_spi_device *device,
             else
             {
                 /* configure SPI bus failed */
-                result = -RT_EIO;
+                LOG_E("SPI device %s configuration failed", device->parent.parent.name);
                 goto __exit;
             }
         }
@@ -162,9 +166,9 @@ rt_err_t rt_spi_send_then_send(struct rt_spi_device *device,
         message.next       = RT_NULL;
 
         result = device->bus->ops->xfer(device, &message);
-        if (result == 0)
+        if (result < 0)
         {
-            result = -RT_EIO;
+            LOG_E("SPI device %s transfer failed", device->parent.parent.name);
             goto __exit;
         }
 
@@ -177,9 +181,9 @@ rt_err_t rt_spi_send_then_send(struct rt_spi_device *device,
         message.next       = RT_NULL;
 
         result = device->bus->ops->xfer(device, &message);
-        if (result == 0)
+        if (result < 0)
         {
-            result = -RT_EIO;
+            LOG_E("SPI device %s transfer failed", device->parent.parent.name);
             goto __exit;
         }
 
@@ -223,7 +227,7 @@ rt_err_t rt_spi_send_then_recv(struct rt_spi_device *device,
             else
             {
                 /* configure SPI bus failed */
-                result = -RT_EIO;
+                LOG_E("SPI device %s configuration failed", device->parent.parent.name);
                 goto __exit;
             }
         }
@@ -237,9 +241,9 @@ rt_err_t rt_spi_send_then_recv(struct rt_spi_device *device,
         message.next       = RT_NULL;
 
         result = device->bus->ops->xfer(device, &message);
-        if (result == 0)
+        if (result < 0)
         {
-            result = -RT_EIO;
+            LOG_E("SPI device %s transfer failed", device->parent.parent.name);
             goto __exit;
         }
 
@@ -252,9 +256,9 @@ rt_err_t rt_spi_send_then_recv(struct rt_spi_device *device,
         message.next       = RT_NULL;
 
         result = device->bus->ops->xfer(device, &message);
-        if (result == 0)
+        if (result < 0)
         {
-            result = -RT_EIO;
+            LOG_E("SPI device %s transfer failed", device->parent.parent.name);
             goto __exit;
         }
 
@@ -271,12 +275,12 @@ __exit:
     return result;
 }
 
-rt_size_t rt_spi_transfer(struct rt_spi_device *device,
-                          const void           *send_buf,
-                          void                 *recv_buf,
-                          rt_size_t             length)
+rt_ssize_t rt_spi_transfer(struct rt_spi_device *device,
+                           const void           *send_buf,
+                           void                 *recv_buf,
+                           rt_size_t             length)
 {
-    rt_err_t result;
+    rt_ssize_t result;
     struct rt_spi_message message;
 
     RT_ASSERT(device != RT_NULL);
@@ -297,8 +301,7 @@ rt_size_t rt_spi_transfer(struct rt_spi_device *device,
             else
             {
                 /* configure SPI bus failed */
-                rt_set_errno(-RT_EIO);
-                result = 0;
+                LOG_E("SPI device %s configuration failed", device->parent.parent.name);
                 goto __exit;
             }
         }
@@ -313,16 +316,15 @@ rt_size_t rt_spi_transfer(struct rt_spi_device *device,
 
         /* transfer message */
         result = device->bus->ops->xfer(device, &message);
-        if (result == 0)
+        if (result < 0)
         {
-            rt_set_errno(-RT_EIO);
+            LOG_E("SPI device %s transfer failed", device->parent.parent.name);
             goto __exit;
         }
     }
     else
     {
-        rt_set_errno(-RT_EIO);
-        return 0;
+        return -RT_EIO;
     }
 
 __exit:
@@ -331,27 +333,32 @@ __exit:
     return result;
 }
 
-rt_uint16_t rt_spi_sendrecv16(struct rt_spi_device *device,
-                              rt_uint16_t           data)
+rt_err_t rt_spi_sendrecv16(struct rt_spi_device *device,
+                           rt_uint16_t senddata,
+                           rt_uint16_t *recvdata)
 {
-    rt_uint16_t value = 0;
+    rt_err_t result;
     rt_uint16_t tmp;
 
     if (device->config.mode & RT_SPI_MSB)
     {
-        tmp = ((data & 0xff00) >> 8) | ((data & 0x00ff) << 8);
-        data = tmp;
+        tmp = ((senddata & 0xff00) >> 8) | ((senddata & 0x00ff) << 8);
+        senddata = tmp;
     }
 
-    rt_spi_send_then_recv(device, &data, 2, &value, 2);
+    result = rt_spi_send_then_recv(device, &senddata, 2, recvdata, 2);
+    if(result != RT_EOK)
+    {
+        return result;
+    }
 
     if (device->config.mode & RT_SPI_MSB)
     {
-        tmp = ((value & 0xff00) >> 8) | ((value & 0x00ff) << 8);
-        value = tmp;
+        tmp = ((*recvdata & 0xff00) >> 8) | ((*recvdata & 0x00ff) << 8);
+        *recvdata = tmp;
     }
 
-    return value;
+    return result;
 }
 
 struct rt_spi_message *rt_spi_transfer_message(struct rt_spi_device  *device,
@@ -370,14 +377,9 @@ struct rt_spi_message *rt_spi_transfer_message(struct rt_spi_device  *device,
     result = rt_mutex_take(&(device->bus->lock), RT_WAITING_FOREVER);
     if (result != RT_EOK)
     {
-        rt_set_errno(-RT_EBUSY);
-
         return index;
     }
 
-    /* reset errno */
-    rt_set_errno(RT_EOK);
-
     /* configure SPI bus */
     if (device->bus->owner != device)
     {
@@ -391,7 +393,6 @@ struct rt_spi_message *rt_spi_transfer_message(struct rt_spi_device  *device,
         else
         {
             /* configure SPI bus failed */
-            rt_set_errno(-RT_EIO);
             goto __exit;
         }
     }
@@ -401,9 +402,8 @@ struct rt_spi_message *rt_spi_transfer_message(struct rt_spi_device  *device,
     {
         /* transmit SPI message */
         result = device->bus->ops->xfer(device, index);
-        if (result == 0)
+        if (result < 0)
         {
-            rt_set_errno(-RT_EIO);
             break;
         }
 
@@ -427,14 +427,9 @@ rt_err_t rt_spi_take_bus(struct rt_spi_device *device)
     result = rt_mutex_take(&(device->bus->lock), RT_WAITING_FOREVER);
     if (result != RT_EOK)
     {
-        rt_set_errno(-RT_EBUSY);
-
         return -RT_EBUSY;
     }
 
-    /* reset errno */
-    rt_set_errno(RT_EOK);
-
     /* configure SPI bus */
     if (device->bus->owner != device)
     {
@@ -448,11 +443,9 @@ rt_err_t rt_spi_take_bus(struct rt_spi_device *device)
         else
         {
             /* configure SPI bus failed */
-            rt_set_errno(-RT_EIO);
-            /* release lock */
             rt_mutex_release(&(device->bus->lock));
 
-            return -RT_EIO;
+            return result;
         }
     }
 
@@ -466,14 +459,12 @@ rt_err_t rt_spi_release_bus(struct rt_spi_device *device)
     RT_ASSERT(device->bus->owner == device);
 
     /* release lock */
-    rt_mutex_release(&(device->bus->lock));
-
-    return RT_EOK;
+    return rt_mutex_release(&(device->bus->lock));
 }
 
 rt_err_t rt_spi_take(struct rt_spi_device *device)
 {
-    rt_err_t result;
+    rt_ssize_t result;
     struct rt_spi_message message;
 
     RT_ASSERT(device != RT_NULL);
@@ -483,13 +474,17 @@ rt_err_t rt_spi_take(struct rt_spi_device *device)
     message.cs_take = 1;
 
     result = device->bus->ops->xfer(device, &message);
+    if(result < 0)
+    {
+        return (rt_err_t)result;
+    }
 
-    return result;
+    return RT_EOK;
 }
 
 rt_err_t rt_spi_release(struct rt_spi_device *device)
 {
-    rt_err_t result;
+    rt_ssize_t result;
     struct rt_spi_message message;
 
     RT_ASSERT(device != RT_NULL);
@@ -499,6 +494,10 @@ rt_err_t rt_spi_release(struct rt_spi_device *device)
     message.cs_release = 1;
 
     result = device->bus->ops->xfer(device, &message);
+    if(result < 0)
+    {
+        return (rt_err_t)result;
+    }
 
-    return result;
+    return RT_EOK;
 }