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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/atm
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/atm')
-rw-r--r--drivers/atm/firestream.c4
-rw-r--r--drivers/atm/lanai.c4
-rw-r--r--drivers/atm/nicstar.c4
3 files changed, 3 insertions, 9 deletions
diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index 6b6368a56526..534001270be5 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -1885,9 +1885,7 @@ static int fs_init(struct fs_dev *dev)
}
#ifdef FS_POLL_FREQ
- init_timer (&dev->timer);
- dev->timer.data = (unsigned long) dev;
- dev->timer.function = fs_poll;
+ setup_timer (&dev->timer, fs_poll, (unsigned long)dev);
dev->timer.expires = jiffies + FS_POLL_FREQ;
add_timer (&dev->timer);
#endif
diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index 2351dad78ff5..87e8b5dfac39 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -1790,10 +1790,8 @@ static void lanai_timed_poll(unsigned long arg)
static inline void lanai_timed_poll_start(struct lanai_dev *lanai)
{
- init_timer(&lanai->timer);
+ setup_timer(&lanai->timer, lanai_timed_poll, (unsigned long)lanai);
lanai->timer.expires = jiffies + LANAI_POLL_PERIOD;
- lanai->timer.data = (unsigned long) lanai;
- lanai->timer.function = lanai_timed_poll;
add_timer(&lanai->timer);
}
diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c
index a9702836cbae..335447ed0ba4 100644
--- a/drivers/atm/nicstar.c
+++ b/drivers/atm/nicstar.c
@@ -284,10 +284,8 @@ static int __init nicstar_init(void)
XPRINTK("nicstar: nicstar_init() returned.\n");
if (!error) {
- init_timer(&ns_timer);
+ setup_timer(&ns_timer, ns_poll, 0UL);
ns_timer.expires = jiffies + NS_POLL_PERIOD;
- ns_timer.data = 0UL;
- ns_timer.function = ns_poll;
add_timer(&ns_timer);
}

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