Changes in uspace/lib/c/generic/device/hw_res.c [38d150e:b7fd2a0] in mainline

File:

• uspace/lib/c/generic/device/hw_res.c (modified) (9 diffs)

uspace/lib/c/generic/device/hw_res.c

@@ -38 +38 @@
 #include <stdlib.h>
 
-int hw_res_get_resource_list(async_sess_t *sess,
+errno_t hw_res_get_resource_list(async_sess_t *sess,
     hw_resource_list_t *hw_resources)
 {
@@ -45 +45 @@
         async_exch_t *exch = async_exchange_begin(sess);
         
-        int rc = async_req_1_1(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
+        errno_t rc = async_req_1_1(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
             HW_RES_GET_RESOURCE_LIST, &count);
         
@@ -75 +75 @@
 }
 
-int hw_res_enable_interrupt(async_sess_t *sess, int irq)
+errno_t hw_res_enable_interrupt(async_sess_t *sess, int irq)
 {
         async_exch_t *exch = async_exchange_begin(sess);
         
-        int rc = async_req_2_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
+        errno_t rc = async_req_2_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
             HW_RES_ENABLE_INTERRUPT, irq);
         async_exchange_end(exch);
@@ -86 +86 @@
 }
 
-int hw_res_disable_interrupt(async_sess_t *sess, int irq)
+errno_t hw_res_disable_interrupt(async_sess_t *sess, int irq)
 {
         async_exch_t *exch = async_exchange_begin(sess);
         
-        int rc = async_req_2_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
+        errno_t rc = async_req_2_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
             HW_RES_DISABLE_INTERRUPT, irq);
         async_exchange_end(exch);
@@ -97 +97 @@
 }
 
-int hw_res_clear_interrupt(async_sess_t *sess, int irq)
+errno_t hw_res_clear_interrupt(async_sess_t *sess, int irq)
 {
         async_exch_t *exch = async_exchange_begin(sess);
         
-        int rc = async_req_2_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
+        errno_t rc = async_req_2_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
             HW_RES_CLEAR_INTERRUPT, irq);
         async_exchange_end(exch);
@@ -122 +122 @@
  *
  */
-int hw_res_dma_channel_setup(async_sess_t *sess,
+errno_t hw_res_dma_channel_setup(async_sess_t *sess,
     unsigned channel, uint32_t pa, uint32_t size, uint8_t mode)
 {
@@ -128 +128 @@
         
         const uint32_t packed = (channel & 0xffff) | (mode << 16);
-        const int ret = async_req_4_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
+        const errno_t ret = async_req_4_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
             HW_RES_DMA_CHANNEL_SETUP, packed, pa, size);
         
@@ -140 +140 @@
  * @param channel DMA channel.
  *
- * @return Number of bytes remaining in the buffer if positive.
- * @return Error code if negative.
+ * @param[out] rem Number of bytes remaining in the buffer if positive.
+ *
+ * @return Error code.
  *
  */
-int hw_res_dma_channel_remain(async_sess_t *sess, unsigned channel)
+errno_t hw_res_dma_channel_remain(async_sess_t *sess, unsigned channel, size_t *rem)
 {
         async_exch_t *exch = async_exchange_begin(sess);
         
         sysarg_t remain;
-        const int ret = async_req_2_1(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
+        const errno_t ret = async_req_2_1(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
             HW_RES_DMA_CHANNEL_REMAIN, channel, &remain);
         
@@ -155 +156 @@
         
         if (ret == EOK)
-                return remain;
+                *rem = remain;
         
         return ret;