staging: exfat: Clean up return codes - FFS_EOF

Convert FFS_EOF to return 0 for a zero-length read() as per 'man 2 read'.

Signed-off-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Link: https://lore.kernel.org/r/20191112021000.42091-4-Valdis.Kletnieks@vt.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
index 2866052623456f36ca6a05130a032f316aa73e45..292af85e3cd2a535e5f7b5698be7586e693036a8 100644 (file)
--- a/drivers/staging/exfat/exfat.h
+++ b/drivers/staging/exfat/exfat.h
@@ -217,7 +217,6 @@ static inline u16 get_row_index(u16 i)
 #define FFS_INVALIDFID          8
 #define FFS_NOTOPENED           12
 #define FFS_MAXOPENED           13
-#define FFS_EOF                 15
 #define FFS_ERROR               19
 
 #define NUM_UPCASE              2918

diff --git a/drivers/staging/exfat/exfat_super.c b/drivers/staging/exfat/exfat_super.c
index 1a906579724c32ad9b3cce4cb89e272ed501c470..77e00d007ad33b59c1d6567a92b33de0cb64ac66 100644 (file)
--- a/drivers/staging/exfat/exfat_super.c
+++ b/drivers/staging/exfat/exfat_super.c
@@ -723,7 +723,7 @@ static int ffsReadFile(struct inode *inode, struct file_id_t *fid, void *buffer,
        if (count == 0) {
                if (rcount)
                        *rcount = 0;
-               ret = FFS_EOF;
+               ret = 0;
                goto out;
        }