SMART FS update from Ken Pettit

1 files changed, 28 insertions, 22 deletions

diff --git a/nuttx/fs/smartfs/smartfs_smart.c b/nuttx/fs/smartfs/smartfs_smart.c
index d58c0f0e5..f221b49f6 100644
--- a/nuttx/fs/smartfs/smartfs_smart.c
+++ b/nuttx/fs/smartfs/smartfs_smart.c
@@ -710,19 +710,22 @@ static ssize_t smartfs_write(FAR struct file *filep, const char *buffer,
 
       /* Now perform the write. */
 
-      ret = FS_IOCTL(fs, BIOC_WRITESECT, (unsigned long) &readwrite);
-      if (ret < 0)
+      if (readwrite.count > 0)
         {
-          fdbg("Error %d writing sector %d data\n", ret, sf->currsector);
-          goto errout_with_semaphore;
-        }
+          ret = FS_IOCTL(fs, BIOC_WRITESECT, (unsigned long) &readwrite);
+          if (ret < 0)
+            {
+              fdbg("Error %d writing sector %d data\n", ret, sf->currsector);
+              goto errout_with_semaphore;
+            }
 
-      /* Update our control variables */
+          /* Update our control variables */
 
-      sf->filepos += readwrite.count;
-      sf->curroffset += readwrite.count;
-      buflen -= readwrite.count;
-      byteswritten += readwrite.count;
+          sf->filepos += readwrite.count;
+          sf->curroffset += readwrite.count;
+          buflen -= readwrite.count;
+          byteswritten += readwrite.count;
+        }
 
       /* Test if we wrote to the end of the current sector */
 
@@ -771,21 +774,24 @@ static ssize_t smartfs_write(FAR struct file *filep, const char *buffer,
 
       /* Perform the write */
 
-      ret = FS_IOCTL(fs, BIOC_WRITESECT, (unsigned long) &readwrite);
-      if (ret < 0)
+      if (readwrite.count > 0)
         {
-          fdbg("Error %d writing sector %d data\n", ret, sf->currsector);
-          goto errout_with_semaphore;
-        }
+          ret = FS_IOCTL(fs, BIOC_WRITESECT, (unsigned long) &readwrite);
+          if (ret < 0)
+            {
+              fdbg("Error %d writing sector %d data\n", ret, sf->currsector);
+              goto errout_with_semaphore;
+            }
 
-      /* Update our control variables */
+          /* Update our control variables */
 
-      sf->entry.datlen += readwrite.count;
-      sf->byteswritten += readwrite.count;
-      sf->filepos += readwrite.count;
-      sf->curroffset += readwrite.count;
-      buflen -= readwrite.count;
-      byteswritten += readwrite.count;
+          sf->entry.datlen += readwrite.count;
+          sf->byteswritten += readwrite.count;
+          sf->filepos += readwrite.count;
+          sf->curroffset += readwrite.count;
+          buflen -= readwrite.count;
+          byteswritten += readwrite.count;
+        }
 
       /* Test if we wrote a full sector of data */