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Message-ID: <20171024170603.kgfeg5zte377e3sm@dtor-ws>
Date: Tue, 24 Oct 2017 10:06:03 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Kees Cook <keescook@...omium.org>
Cc: Rakesh Iyer <riyer@...dia.com>,
Laxman Dewangan <ldewangan@...dia.com>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Guenter Roeck <linux@...ck-us.net>,
Linus Walleij <linus.walleij@...aro.org>,
Hans de Goede <hdegoede@...hat.com>,
Geliang Tang <geliangtang@...il.com>,
linux-input@...r.kernel.org, linux-tegra@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: keyboard: Convert timers to use timer_setup()
On Tue, Oct 24, 2017 at 07:18:37AM -0700, Kees Cook wrote:
> In preparation for unconditionally passing the struct timer_list pointer to
> all timer callbacks, switch to using the new timer_setup() and from_timer()
> to pass the timer pointer explicitly.
>
> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Cc: Rakesh Iyer <riyer@...dia.com>
> Cc: Laxman Dewangan <ldewangan@...dia.com>
> Cc: Thierry Reding <thierry.reding@...il.com>
> Cc: Jonathan Hunter <jonathanh@...dia.com>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Hans de Goede <hdegoede@...hat.com>
> Cc: Geliang Tang <geliangtang@...il.com>
> Cc: linux-input@...r.kernel.org
> Cc: linux-tegra@...r.kernel.org
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
Applied...
> drivers/input/keyboard/bf54x-keys.c | 7 +++----
> drivers/input/keyboard/gpio_keys.c | 7 +++----
With the exception of this that I already had a patch for.
> drivers/input/keyboard/imx_keypad.c | 8 ++++----
> drivers/input/keyboard/locomokbd.c | 7 +++----
> drivers/input/keyboard/omap-keypad.c | 6 +++---
> drivers/input/keyboard/snvs_pwrkey.c | 7 +++----
> drivers/input/keyboard/tegra-kbc.c | 6 +++---
> 7 files changed, 22 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/input/keyboard/bf54x-keys.c b/drivers/input/keyboard/bf54x-keys.c
> index 39bcbc38997f..8a07a426f88e 100644
> --- a/drivers/input/keyboard/bf54x-keys.c
> +++ b/drivers/input/keyboard/bf54x-keys.c
> @@ -127,10 +127,9 @@ static inline void bfin_kpad_clear_irq(void)
> bfin_write_KPAD_ROWCOL(0xFFFF);
> }
>
> -static void bfin_kpad_timer(unsigned long data)
> +static void bfin_kpad_timer(struct timer_list *t)
> {
> - struct platform_device *pdev = (struct platform_device *) data;
> - struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
> + struct bf54x_kpad *bf54x_kpad = from_timer(bf54x_kpad, t, timer);
>
> if (bfin_kpad_get_keypressed(bf54x_kpad)) {
> /* Try again later */
> @@ -298,7 +297,7 @@ static int bfin_kpad_probe(struct platform_device *pdev)
>
> /* Init Keypad Key Up/Release test timer */
>
> - setup_timer(&bf54x_kpad->timer, bfin_kpad_timer, (unsigned long) pdev);
> + timer_setup(&bf54x_kpad->timer, bfin_kpad_timer, 0);
>
> bfin_write_KPAD_PRESCALE(bfin_kpad_get_prescale(TIME_SCALE));
>
> diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
> index e9f0ebf3267a..87e613dc33b8 100644
> --- a/drivers/input/keyboard/gpio_keys.c
> +++ b/drivers/input/keyboard/gpio_keys.c
> @@ -419,9 +419,9 @@ static irqreturn_t gpio_keys_gpio_isr(int irq, void *dev_id)
> return IRQ_HANDLED;
> }
>
> -static void gpio_keys_irq_timer(unsigned long _data)
> +static void gpio_keys_irq_timer(struct timer_list *t)
> {
> - struct gpio_button_data *bdata = (struct gpio_button_data *)_data;
> + struct gpio_button_data *bdata = from_timer(bdata, t, release_timer);
> struct input_dev *input = bdata->input;
> unsigned long flags;
>
> @@ -582,8 +582,7 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
> }
>
> bdata->release_delay = button->debounce_interval;
> - setup_timer(&bdata->release_timer,
> - gpio_keys_irq_timer, (unsigned long)bdata);
> + timer_setup(&bdata->release_timer, gpio_keys_irq_timer, 0);
>
> isr = gpio_keys_irq_isr;
> irqflags = 0;
> diff --git a/drivers/input/keyboard/imx_keypad.c b/drivers/input/keyboard/imx_keypad.c
> index 2165f3dd328b..d0220e82e018 100644
> --- a/drivers/input/keyboard/imx_keypad.c
> +++ b/drivers/input/keyboard/imx_keypad.c
> @@ -184,9 +184,9 @@ static void imx_keypad_fire_events(struct imx_keypad *keypad,
> /*
> * imx_keypad_check_for_events is the timer handler.
> */
> -static void imx_keypad_check_for_events(unsigned long data)
> +static void imx_keypad_check_for_events(struct timer_list *t)
> {
> - struct imx_keypad *keypad = (struct imx_keypad *) data;
> + struct imx_keypad *keypad = from_timer(keypad, t, check_matrix_timer);
> unsigned short matrix_volatile_state[MAX_MATRIX_KEY_COLS];
> unsigned short reg_val;
> bool state_changed, is_zero_matrix;
> @@ -456,8 +456,8 @@ static int imx_keypad_probe(struct platform_device *pdev)
> keypad->irq = irq;
> keypad->stable_count = 0;
>
> - setup_timer(&keypad->check_matrix_timer,
> - imx_keypad_check_for_events, (unsigned long) keypad);
> + timer_setup(&keypad->check_matrix_timer, imx_keypad_check_for_events,
> + 0);
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> keypad->mmio_base = devm_ioremap_resource(&pdev->dev, res);
> diff --git a/drivers/input/keyboard/locomokbd.c b/drivers/input/keyboard/locomokbd.c
> index 0d74312d5b02..30d610758595 100644
> --- a/drivers/input/keyboard/locomokbd.c
> +++ b/drivers/input/keyboard/locomokbd.c
> @@ -210,9 +210,9 @@ static irqreturn_t locomokbd_interrupt(int irq, void *dev_id)
> /*
> * LoCoMo timer checking for released keys
> */
> -static void locomokbd_timer_callback(unsigned long data)
> +static void locomokbd_timer_callback(struct timer_list *t)
> {
> - struct locomokbd *locomokbd = (struct locomokbd *) data;
> + struct locomokbd *locomokbd = from_timer(locomokbd, t, timer);
>
> locomokbd_scankeyboard(locomokbd);
> }
> @@ -264,8 +264,7 @@ static int locomokbd_probe(struct locomo_dev *dev)
>
> spin_lock_init(&locomokbd->lock);
>
> - setup_timer(&locomokbd->timer, locomokbd_timer_callback,
> - (unsigned long)locomokbd);
> + timer_setup(&locomokbd->timer, locomokbd_timer_callback, 0);
>
> locomokbd->suspend_jiffies = jiffies;
>
> diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c
> index 146b26f665f6..7bd107910a6e 100644
> --- a/drivers/input/keyboard/omap-keypad.c
> +++ b/drivers/input/keyboard/omap-keypad.c
> @@ -41,7 +41,7 @@
> #undef NEW_BOARD_LEARNING_MODE
>
> static void omap_kp_tasklet(unsigned long);
> -static void omap_kp_timer(unsigned long);
> +static void omap_kp_timer(struct timer_list *);
>
> static unsigned char keypad_state[8];
> static DEFINE_MUTEX(kp_enable_mutex);
> @@ -74,7 +74,7 @@ static irqreturn_t omap_kp_interrupt(int irq, void *dev_id)
> return IRQ_HANDLED;
> }
>
> -static void omap_kp_timer(unsigned long data)
> +static void omap_kp_timer(struct timer_list *unused)
> {
> tasklet_schedule(&kp_tasklet);
> }
> @@ -233,7 +233,7 @@ static int omap_kp_probe(struct platform_device *pdev)
> col_idx = 0;
> row_idx = 0;
>
> - setup_timer(&omap_kp->timer, omap_kp_timer, (unsigned long)omap_kp);
> + timer_setup(&omap_kp->timer, omap_kp_timer, 0);
>
> /* get the irq and init timer*/
> kp_tasklet.data = (unsigned long) omap_kp;
> diff --git a/drivers/input/keyboard/snvs_pwrkey.c b/drivers/input/keyboard/snvs_pwrkey.c
> index 7544888c4749..53c768b95939 100644
> --- a/drivers/input/keyboard/snvs_pwrkey.c
> +++ b/drivers/input/keyboard/snvs_pwrkey.c
> @@ -45,9 +45,9 @@ struct pwrkey_drv_data {
> struct input_dev *input;
> };
>
> -static void imx_imx_snvs_check_for_events(unsigned long data)
> +static void imx_imx_snvs_check_for_events(struct timer_list *t)
> {
> - struct pwrkey_drv_data *pdata = (struct pwrkey_drv_data *) data;
> + struct pwrkey_drv_data *pdata = from_timer(pdata, t, check_timer);
> struct input_dev *input = pdata->input;
> u32 state;
>
> @@ -134,8 +134,7 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
> /* clear the unexpected interrupt before driver ready */
> regmap_write(pdata->snvs, SNVS_LPSR_REG, SNVS_LPSR_SPO);
>
> - setup_timer(&pdata->check_timer,
> - imx_imx_snvs_check_for_events, (unsigned long) pdata);
> + timer_setup(&pdata->check_timer, imx_imx_snvs_check_for_events, 0);
>
> input = devm_input_allocate_device(&pdev->dev);
> if (!input) {
> diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
> index edc1385ca00b..875205f445b5 100644
> --- a/drivers/input/keyboard/tegra-kbc.c
> +++ b/drivers/input/keyboard/tegra-kbc.c
> @@ -251,9 +251,9 @@ static void tegra_kbc_set_fifo_interrupt(struct tegra_kbc *kbc, bool enable)
> writel(val, kbc->mmio + KBC_CONTROL_0);
> }
>
> -static void tegra_kbc_keypress_timer(unsigned long data)
> +static void tegra_kbc_keypress_timer(struct timer_list *t)
> {
> - struct tegra_kbc *kbc = (struct tegra_kbc *)data;
> + struct tegra_kbc *kbc = from_timer(kbc, t, timer);
> unsigned long flags;
> u32 val;
> unsigned int i;
> @@ -655,7 +655,7 @@ static int tegra_kbc_probe(struct platform_device *pdev)
> return -ENOMEM;
> }
>
> - setup_timer(&kbc->timer, tegra_kbc_keypress_timer, (unsigned long)kbc);
> + timer_setup(&kbc->timer, tegra_kbc_keypress_timer, 0);
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> kbc->mmio = devm_ioremap_resource(&pdev->dev, res);
> --
> 2.7.4
>
>
> --
> Kees Cook
> Pixel Security
--
Dmitry
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