linux-kernel - [PATCH 08/29] memstick: mspro: add comments to few functions

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Date:	Sat, 23 Oct 2010 01:53:36 +0200
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	Alex Dubov <oakad@...oo.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Maxim Levitsky <maximlevitsky@...il.com>
Subject: [PATCH 08/29] memstick: mspro: add comments to few functions

a comment before function is not only a good way
to give some information to the reader, but
it serves as a good anchor point for diff so that
it doesn't produce a diff between different
functions (sigh...)

Signed-off-by: Maxim Levitsky <maximlevitsky@...il.com>
---
 drivers/memstick/core/mspro_block.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 13cb83b..a7f263d 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -515,6 +515,10 @@ has_int_reg:
 
 /*** Data transfer ***/
 
+/*
+ * Start execution of next block request,
+ * or continue execution of the current one
+ */
 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
 {
 	struct mspro_block_data *msb = memstick_get_drvdata(card);
@@ -575,6 +579,11 @@ try_again:
 	goto try_again;
 }
 
+/*
+ * Completes execution of current block request.
+ *  After execution of this function, the msb->block_req might or might not
+ *  be NULL. If it is, it means we don't have any more requests to process
+ */
 static int mspro_block_complete_req(struct memstick_dev *card, int error)
 {
 	struct mspro_block_data *msb = memstick_get_drvdata(card);
@@ -630,6 +639,10 @@ out:
 	return error;
 }
 
+/*
+ * This pauses driver.
+ * Makes sure that driver won't send any commands to the device
+ */
 static void mspro_block_stop(struct memstick_dev *card)
 {
 	struct mspro_block_data *msb = memstick_get_drvdata(card);
@@ -651,6 +664,7 @@ static void mspro_block_stop(struct memstick_dev *card)
 	}
 }
 
+/* This undoes effects of mspro_block_stop */
 static void mspro_block_start(struct memstick_dev *card)
 {
 	struct mspro_block_data *msb = memstick_get_drvdata(card);
-- 
1.7.1

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