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memstick: add "start" and "stop" methods to memstick device

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In some cases it may be desirable to ensure that associated driver is not
going to access the media in some period of time.  "start" and "stop"
methods are provided therefore to allow it.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alex Dubov
2008-07-25 19:45:01 -07:00
committed by Linus Torvalds
parent b77899985b
commit 17017d8d2c
3 changed files with 45 additions and 3 deletions
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4
include/linux/memstick.h
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@@ -263,6 +263,10 @@ struct memstick_dev {
/* Get next request from the media driver. */
int (*next_request)(struct memstick_dev *card,
struct memstick_request **mrq);
/* Tell the media driver to stop doing things */
void (*stop)(struct memstick_dev *card);
/* Allow the media driver to continue */
void (*start)(struct memstick_dev *card);
struct device dev;
};