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authorKees Cook <keescook@chromium.org>2017-10-16 13:15:39 -0700
committerKees Cook <keescook@chromium.org>2017-11-21 15:57:06 -0800
commitb9eaf18722221ef8b2bd6a67240ebe668622152a (patch)
tree049bd340077d0e672a198deecdfc0fb870ca8124 /drivers/isdn
parent24ed960abf1d50cb7834e99a0cfc081bc0656712 (diff)
treewide: init_timer() -> setup_timer()
This mechanically converts all remaining cases of ancient open-coded timer setup with the old setup_timer() API, which is the first step in timer conversions. This has no behavioral changes, since it ultimately just changes the order of assignment to fields of struct timer_list when finding variations of: init_timer(&t); f.function = timer_callback; t.data = timer_callback_arg; to be converted into: setup_timer(&t, timer_callback, timer_callback_arg); The conversion is done with the following Coccinelle script, which is an improved version of scripts/cocci/api/setup_timer.cocci, in the following ways: - assignments-before-init_timer() cases - limit the .data case removal to the specific struct timer_list instance - handling calls by dereference (timer->field vs timer.field) spatch --very-quiet --all-includes --include-headers \ -I ./arch/x86/include -I ./arch/x86/include/generated \ -I ./include -I ./arch/x86/include/uapi \ -I ./arch/x86/include/generated/uapi -I ./include/uapi \ -I ./include/generated/uapi --include ./include/linux/kconfig.h \ --dir . \ --cocci-file ~/src/data/setup_timer.cocci @fix_address_of@ expression e; @@ init_timer( -&(e) +&e , ...) // Match the common cases first to avoid Coccinelle parsing loops with // "... when" clauses. @match_immediate_function_data_after_init_timer@ expression e, func, da; @@ -init_timer +setup_timer ( \(&e\|e\) +, func, da ); ( -\(e.function\|e->function\) = func; -\(e.data\|e->data\) = da; | -\(e.data\|e->data\) = da; -\(e.function\|e->function\) = func; ) @match_immediate_function_data_before_init_timer@ expression e, func, da; @@ ( -\(e.function\|e->function\) = func; -\(e.data\|e->data\) = da; | -\(e.data\|e->data\) = da; -\(e.function\|e->function\) = func; ) -init_timer +setup_timer ( \(&e\|e\) +, func, da ); @match_function_and_data_after_init_timer@ expression e, e2, e3, e4, e5, func, da; @@ -init_timer +setup_timer ( \(&e\|e\) +, func, da ); ... when != func = e2 when != da = e3 ( -e.function = func; ... when != da = e4 -e.data = da; | -e->function = func; ... when != da = e4 -e->data = da; | -e.data = da; ... when != func = e5 -e.function = func; | -e->data = da; ... when != func = e5 -e->function = func; ) @match_function_and_data_before_init_timer@ expression e, e2, e3, e4, e5, func, da; @@ ( -e.function = func; ... when != da = e4 -e.data = da; | -e->function = func; ... when != da = e4 -e->data = da; | -e.data = da; ... when != func = e5 -e.function = func; | -e->data = da; ... when != func = e5 -e->function = func; ) ... when != func = e2 when != da = e3 -init_timer +setup_timer ( \(&e\|e\) +, func, da ); @r1 exists@ expression t; identifier f; position p; @@ f(...) { ... when any init_timer@p(\(&t\|t\)) ... when any } @r2 exists@ expression r1.t; identifier g != r1.f; expression e8; @@ g(...) { ... when any \(t.data\|t->data\) = e8 ... when any } // It is dangerous to use setup_timer if data field is initialized // in another function. @script:python depends on r2@ p << r1.p; @@ cocci.include_match(False) @r3@ expression r1.t, func, e7; position r1.p; @@ ( -init_timer@p(&t); +setup_timer(&t, func, 0UL); ... when != func = e7 -t.function = func; | -t.function = func; ... when != func = e7 -init_timer@p(&t); +setup_timer(&t, func, 0UL); | -init_timer@p(t); +setup_timer(t, func, 0UL); ... when != func = e7 -t->function = func; | -t->function = func; ... when != func = e7 -init_timer@p(t); +setup_timer(t, func, 0UL); ) Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers/isdn')
-rw-r--r--drivers/isdn/i4l/isdn_common.c3
-rw-r--r--drivers/isdn/i4l/isdn_net.c6
2 files changed, 4 insertions, 5 deletions
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index 38a5bb764c7b..3fa2f7b31131 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -2294,8 +2294,7 @@ static int __init isdn_init(void)
printk(KERN_WARNING "isdn: Could not allocate device-struct.\n");
return -EIO;
}
- init_timer(&dev->timer);
- dev->timer.function = isdn_timer_funct;
+ setup_timer(&dev->timer, isdn_timer_funct, 0UL);
spin_lock_init(&dev->lock);
spin_lock_init(&dev->timerlock);
#ifdef MODULE
diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index f63a110b7bcb..59d40160cab2 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/drivers/isdn/i4l/isdn_net.c
@@ -1615,9 +1615,9 @@ isdn_net_ciscohdlck_connected(isdn_net_local *lp)
/* send slarp request because interface/seq.no.s reset */
isdn_net_ciscohdlck_slarp_send_request(lp);
- init_timer(&lp->cisco_timer);
- lp->cisco_timer.data = (unsigned long) lp;
- lp->cisco_timer.function = isdn_net_ciscohdlck_slarp_send_keepalive;
+ setup_timer(&lp->cisco_timer,
+ isdn_net_ciscohdlck_slarp_send_keepalive,
+ (unsigned long)lp);
lp->cisco_timer.expires = jiffies + lp->cisco_keepalive_period * HZ;
add_timer(&lp->cisco_timer);
}