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From:   Valdis Kletnieks <valdis.kletnieks@vt.edu>
To:     gregkh@linuxfoundation.org
Cc:     Valdis Kletnieks <Valdis.Kletnieks@vt.edu>,
        Valdis Kletnieks <valdis.kletnieks@vt.edu>,
        linux-fsdevel@vger.kernel.org, devel@driverdev.osuosl.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v3 3/9] staging: exfat: Clean up return codes - FFS_EOF
Date:   Mon, 11 Nov 2019 21:09:51 -0500
Message-Id: <20191112021000.42091-4-Valdis.Kletnieks@vt.edu>
In-Reply-To: <20191112021000.42091-1-Valdis.Kletnieks@vt.edu>
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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>
---
 drivers/staging/exfat/exfat.h       | 1 -
 drivers/staging/exfat/exfat_super.c | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
index 286605262345..292af85e3cd2 100644
--- 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 d6d5f0fd47fd..7c99d1f8cba8 100644
--- 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;
 	}
 
-- 
2.24.0