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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 /arch
parent24ed960abf1d50cb7834e99a0cfc081bc0656712 (diff)
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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 'arch')
-rw-r--r--arch/arm/mach-iop32x/n2100.c3
-rw-r--r--arch/blackfin/kernel/nmi.c3
-rw-r--r--arch/sh/drivers/pci/common.c10
-rw-r--r--arch/sh/drivers/push-switch.c5
4 files changed, 7 insertions, 14 deletions
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
index c1cd80ecc219..4a64a11ba63c 100644
--- a/arch/arm/mach-iop32x/n2100.c
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -336,8 +336,7 @@ static int __init n2100_request_gpios(void)
pr_err("could not set power GPIO as input\n");
}
/* Set up power button poll timer */
- init_timer(&power_button_poll_timer);
- power_button_poll_timer.function = power_button_poll;
+ setup_timer(&power_button_poll_timer, power_button_poll, 0UL);
power_button_poll_timer.expires = jiffies + (HZ / 10);
add_timer(&power_button_poll_timer);
return 0;
diff --git a/arch/blackfin/kernel/nmi.c b/arch/blackfin/kernel/nmi.c
index 1e714329fe8a..828f4fbdb58a 100644
--- a/arch/blackfin/kernel/nmi.c
+++ b/arch/blackfin/kernel/nmi.c
@@ -180,8 +180,7 @@ static int __init init_nmi_wdt(void)
nmi_wdt_start();
nmi_active = true;
- init_timer(&ntimer);
- ntimer.function = nmi_wdt_timer;
+ setup_timer(&ntimer, nmi_wdt_timer, 0UL);
ntimer.expires = jiffies + NMI_CHECK_TIMEOUT;
add_timer(&ntimer);
diff --git a/arch/sh/drivers/pci/common.c b/arch/sh/drivers/pci/common.c
index cae707f3472d..0d7eb7b5ac8d 100644
--- a/arch/sh/drivers/pci/common.c
+++ b/arch/sh/drivers/pci/common.c
@@ -106,15 +106,13 @@ static void pcibios_enable_serr(unsigned long __data)
void pcibios_enable_timers(struct pci_channel *hose)
{
if (hose->err_irq) {
- init_timer(&hose->err_timer);
- hose->err_timer.data = (unsigned long)hose;
- hose->err_timer.function = pcibios_enable_err;
+ setup_timer(&hose->err_timer, pcibios_enable_err,
+ (unsigned long)hose);
}
if (hose->serr_irq) {
- init_timer(&hose->serr_timer);
- hose->serr_timer.data = (unsigned long)hose;
- hose->serr_timer.function = pcibios_enable_serr;
+ setup_timer(&hose->serr_timer, pcibios_enable_serr,
+ (unsigned long)hose);
}
}
diff --git a/arch/sh/drivers/push-switch.c b/arch/sh/drivers/push-switch.c
index 5bfb341cc5c4..2dc791507968 100644
--- a/arch/sh/drivers/push-switch.c
+++ b/arch/sh/drivers/push-switch.c
@@ -78,10 +78,7 @@ static int switch_drv_probe(struct platform_device *pdev)
}
INIT_WORK(&psw->work, switch_work_handler);
- init_timer(&psw->debounce);
-
- psw->debounce.function = switch_timer;
- psw->debounce.data = (unsigned long)psw;
+ setup_timer(&psw->debounce, switch_timer, (unsigned long)psw);
/* Workqueue API brain-damage */
psw->pdev = pdev;