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[PATCH] const struct tty_operations

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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>
This commit is contained in:
Jeff Dike 2006-10-02 02:17:18 -07:00 • committed by Linus Torvalds
parent ed97bd37ef
commit b68e31d0eb
57 changed files with 63 additions and 62 deletions
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2
arch/alpha/kernel/srmcons.c
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@ -229,7 +229,7 @@ srmcons_close(struct tty_struct *tty, struct file *filp)
static struct tty_driver *srmcons_driver;
static struct tty_operations srmcons_ops = {
static const struct tty_operations srmcons_ops = {
.open = srmcons_open,
.close = srmcons_close,
.write = srmcons_write,