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authorJeff Dike <jdike@addtoit.com>2006-10-02 02:17:18 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-02 07:57:14 -0700
commitb68e31d0ebbcc909d1941f9f230c9d062a3a13d3 (patch)
treeb32902e5de02081cbb9eca49d7bb0b444e2b4f23 /include/linux/tty_driver.h
parented97bd37efd8ff7398d3a7eedf4bcbf245f5dad3 (diff)
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[PATCH] const struct tty_operations
As part of an SMP cleanliness pass over UML, I consted a bunch of structures in order to not have to document their locking. One of these structures was a struct tty_operations. In order to const it in UML without introducing compiler complaints, the declaration of tty_set_operations needs to be changed, and then all of its callers need to be fixed. This patch declares all struct tty_operations in the tree as const. In all cases, they are static and used only as input to tty_set_operations. As an extra check, I ran an i386 allyesconfig build which produced no extra warnings. 53 drivers are affected. I checked the history of a bunch of them, and in most cases, there have been only a handful of maintenance changes in the last six months. serial_core.c was the busiest one that I looked at. Signed-off-by: Jeff Dike <jdike@addtoit.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/tty_driver.h')
-rw-r--r--include/linux/tty_driver.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 58c961c9e170..5c8473bb6882 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -219,7 +219,8 @@ extern struct list_head tty_drivers;
struct tty_driver *alloc_tty_driver(int lines);
void put_tty_driver(struct tty_driver *driver);
-void tty_set_operations(struct tty_driver *driver, struct tty_operations *op);
+void tty_set_operations(struct tty_driver *driver,
+ const struct tty_operations *op);
/* tty driver magic number */
#define TTY_DRIVER_MAGIC 0x5402