From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Date: Wed, 31 Jan 2007 09:43:13 +0000 (+0200)
Subject: [MTD] Clarify OOB-operation interface comments
X-Git-Tag: v2.6.21-rc1~66^2~15
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73a4421c5a0aa77b996891e7616b396c360b3ed8;p=linux-2.6

[MTD] Clarify OOB-operation interface comments

Add more comment to OOB I/O interface. Read/write are not
symmetric which is confusing and should be documented.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
---

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 8a2e8bfc1e..6a8570be33 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -85,6 +85,10 @@ typedef enum {
  *		mode = MTD_OOB_PLACE)
  * @datbuf:	data buffer - if NULL only oob data are read/written
  * @oobbuf:	oob data buffer
+ *
+ * Note, it is allowed to read more then one OOB area at one go, but not write.
+ * The interface assumes that the OOB write requests program only one page's
+ * OOB area.
  */
 struct mtd_oob_ops {
 	mtd_oob_mode_t	mode;