Fix errors/warnings reported by eZ80 compiler

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2239 42af7a65-404d-4744-a932-0658087f49c3

drivers/bch/bchdev_driver.c

@@ -137,7 +137,7 @@ static int bch_close(FAR struct file *filp)
 {
   FAR struct inode *inode = filp->f_inode;
   FAR struct bchlib_s *bch;
-  int ret;
+  int ret = OK;
 
   DEBUGASSERT(inode && inode->i_private);
   bch = (FAR struct bchlib_s *)inode->i_private;

drivers/bch/bchdev_unregister.c

 /****************************************************************************
  * drivers/bch/bchdev_unregister.c
  *
- *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -105,10 +105,10 @@ int bchdev_unregister(const char *chardev)
   /* Open the character driver associated with chardev */
 
   fd = open(chardev, O_RDONLY);
-  if (ret < 0)
+  if (fd < 0)
     {
-      dbg("Failed to open %s: %d\n", chardev, -ret);
-      return ret;
+      dbg("Failed to open %s: %d\n", chardev, errno);
+      return -errno;
     }
 
   /* Get a reference to the internal data structure.  On success, we

drivers/mmcsd/mmcsd.c

@@ -153,7 +153,9 @@ static ssize_t mmcsd_doread(FAR void *dev, FAR ubyte *buffer,
                             off_t startblock, size_t nblocks)
 {
   struct mmcsd_state_s *priv = (struct mmcsd_state_s *)dev;
+#ifdef CONFIG_CPP_HAVE_WARNING
 #  warning "Not implemented"
+#endif
   return -ENOSYS;
 }
 
@@ -169,7 +171,9 @@ static ssize_t mmcsd_dowrite(FAR void *dev, FAR const ubyte *buffer,
                              off_t startblock, size_t nblocks)
 {
   struct mmcsd_state_s *priv = (struct mmcsd_state_s *)dev;
+#ifdef CONFIG_CPP_HAVE_WARNING
 #  warning "Not implemented"
+#endif
   return -ENOSYS;
 }
 #endif
@@ -289,7 +293,9 @@ static int mmcsd_geometry(FAR struct inode *inode, struct geometry *geometry)
   if (geometry)
     {
       priv = (struct mmcsd_state_s *)inode->i_private;
-#warning "Not implemented"
+#ifdef CONFIG_CPP_HAVE_WARNING
+#  warning "Not implemented"
+#endif
       return -ENOSYS;
     }
   return -EINVAL;
@@ -310,7 +316,9 @@ static int mmcsd_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
   DEBUGASSERT(inode && inode->i_private);
   priv  = (struct mmcsd_state_s *)inode->i_private;
 
-#warning "Not implemented"
+#ifdef CONFIG_CPP_HAVE_WARNING
+#  warning "Not implemented"
+#endif
   return -ENOTTY;
 }
 
@@ -326,7 +334,9 @@ static int mmcsd_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
 
 static int mmcsd_hwinitialize(struct mmcsd_state_s *priv)
 {
-#warning "Not implemented"
+#ifdef CONFIG_CPP_HAVE_WARNING
+#  warning "Not implemented"
+#endif
   return -ENODEV;
 }
 

drivers/mtd/m25px.c

@@ -152,12 +152,12 @@ static inline void m25p_pagewrite(struct m25p_dev_s *priv, FAR const ubyte *buff
 /* MTD driver methods */
 
 static int m25p_erase(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks);
-static int m25p_bread(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
-                      FAR ubyte *buf);
-static int m25p_bwrite(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
-                       FAR const ubyte *buf);
-static int m25p_read(FAR struct mtd_dev_s *dev, off_t offset, size_t nbytes,
-                     FAR ubyte *buffer);
+static ssize_t m25p_bread(FAR struct mtd_dev_s *dev, off_t startblock,
+                          size_t nblocks, FAR ubyte *buf);
+static ssize_t m25p_bwrite(FAR struct mtd_dev_s *dev, off_t startblock,
+                           size_t nblocks, FAR const ubyte *buf);
+static ssize_t m25p_read(FAR struct mtd_dev_s *dev, off_t offset, size_t nbytes,
+                         FAR ubyte *buffer);
 static int m25p_ioctl(FAR struct mtd_dev_s *dev, int cmd, unsigned long arg);
 
 /************************************************************************************
@@ -477,7 +477,7 @@ static ssize_t m25p_bread(FAR struct mtd_dev_s *dev, off_t startblock, size_t nb
                           FAR ubyte *buffer)
 {
   FAR struct m25p_dev_s *priv = (FAR struct m25p_dev_s *)dev;
-  off_t nbytes;
+  ssize_t nbytes;
 
   fvdbg("startblock: %08lx nblocks: %d\n", (long)startblock, (int)nblocks);
 
@@ -488,7 +488,7 @@ static ssize_t m25p_bread(FAR struct mtd_dev_s *dev, off_t startblock, size_t nb
     {
         return nbytes >> priv->pageshift;
     }
-  return nbytes;
+  return (int)nbytes;
 }
 
 /************************************************************************************

include/nuttx/mmcsd.h

@@ -464,7 +464,7 @@ enum mmcsd_clock_e
   CLOCK_MMC_SLOW,           /* MMC initialization clocking */
   CLOCK_SD_SLOW,            /* SD initialization clocking */
   CLOCK_MMC_FAST,           /* MMC normal operation clocking */
-  CLOCK_SD_FAST,            /* SD normal operation clocking */
+  CLOCK_SD_FAST             /* SD normal operation clocking */
 };
 
 /* This structure defines the interface between the NuttX MMC/SD

include/nuttx/mtd.h

@@ -89,10 +89,10 @@ struct mtd_dev_s
 
   /* Read/write from the specified read/write blocks */
 
-  int (*bread)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
-               FAR ubyte *buffer);
-  int (*bwrite)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
-                FAR const ubyte *buffer);
+  ssize_t (*bread)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
+                   FAR ubyte *buffer);
+  ssize_t (*bwrite)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
+                    FAR const ubyte *buffer);
 
   /* Some devices may support byte oriented read (optional).  Byte-oriented
    * writing is inherently block oriented on most MTD devices and is not supported.
@@ -100,8 +100,8 @@ struct mtd_dev_s
    * buffering.
    */
 
-  int (*read)(FAR struct mtd_dev_s *dev, off_t offset, size_t nbytes,
-              FAR ubyte *buffer);
+  ssize_t (*read)(FAR struct mtd_dev_s *dev, off_t offset, size_t nbytes,
+                  FAR ubyte *buffer);
 
   /* Support other, less frequently used commands:
    *  - MTDIOC_GEOMETRY:  Get MTD geometry