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SubjectRe: [PATCH 24/31] mips/sgi-ip22: Use separate static data field with with static timer
On Thu, Aug 31, 2017 at 04:29:36PM -0700, Kees Cook wrote:

> In preparation for changing the timer callback argument to the timer
> pointer, move to a separate static data variable.
>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: James Hogan <james.hogan@imgtec.com>
> Cc: Ingo Molnar <mingo@kernel.org>
> Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
> Cc: linux-mips@linux-mips.org
> Signed-off-by: Kees Cook <keescook@chromium.org>
> ---
> arch/mips/sgi-ip22/ip22-reset.c | 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/arch/mips/sgi-ip22/ip22-reset.c b/arch/mips/sgi-ip22/ip22-reset.c
> index 196b041866ac..5cc32610e6d3 100644
> --- a/arch/mips/sgi-ip22/ip22-reset.c
> +++ b/arch/mips/sgi-ip22/ip22-reset.c
> @@ -38,6 +38,7 @@
> #define PANIC_FREQ (HZ / 8)
>
> static struct timer_list power_timer, blink_timer, debounce_timer;
> +static unsigned long blink_timer_timeout;

You're removing power_timer and debounce_timer ...

> #define MACHINE_PANICED 1
> #define MACHINE_SHUTTING_DOWN 2
> @@ -86,13 +87,13 @@ static void power_timeout(unsigned long data)
> sgi_machine_power_off();
> }
>
> -static void blink_timeout(unsigned long data)
> +static void blink_timeout(unsigned long unused)
> {
> /* XXX fix this for fullhouse */
> sgi_ioc_reset ^= (SGIOC_RESET_LC0OFF|SGIOC_RESET_LC1OFF);
> sgioc->reset = sgi_ioc_reset;
>
> - mod_timer(&blink_timer, jiffies + data);
> + mod_timer(&blink_timer, jiffies + blink_timer_timeout);
> }
>
> static void debounce(unsigned long data)
> @@ -128,8 +129,8 @@ static inline void power_button(void)
> }
>
> machine_state |= MACHINE_SHUTTING_DOWN;
> - blink_timer.data = POWERDOWN_FREQ;
> - blink_timeout(POWERDOWN_FREQ);
> + blink_timer_timeout = POWERDOWN_FREQ;
> + blink_timeout(0);
>
> setup_timer(&power_timer, power_timeout, 0UL);

... but don't remove the reference to power_timer nor use of debounce_timer.

> power_timer.expires = jiffies + POWERDOWN_TIMEOUT * HZ;
> @@ -169,8 +170,8 @@ static int panic_event(struct notifier_block *this, unsigned long event,
> return NOTIFY_DONE;
> machine_state |= MACHINE_PANICED;
>
> - blink_timer.data = PANIC_FREQ;
> - blink_timeout(PANIC_FREQ);
> + blink_timer_timeout = PANIC_FREQ;
> + blink_timeout(0);
>
> return NOTIFY_DONE;
> }
> @@ -193,8 +194,7 @@ static int __init reboot_setup(void)
> return res;
> }
>
> - init_timer(&blink_timer);
> - blink_timer.function = blink_timeout;
> + setup_timer(&blink_timer, blink_timeout, 0);
> atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
>
> return 0;

Ralf

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