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auxdisplay: Convert timers to use timer_setup() 

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: Paul Burton <paul.burton@imgtec.com>
Cc: Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Paul Burton <paul.burton@mips.com>
Tested-by: Paul Burton <paul.burton@mips.com> # for img-ascii-lcd
This commit is contained in:
Kees Cook 2017-10-19 14:08:22 -07:00
parent db275f2a02
commit 607a630107
2 changed files with 6 additions and 8 deletions
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10
drivers/auxdisplay/img-ascii-lcd.c
View File

@ -229,9 +229,9 @@ MODULE_DEVICE_TABLE(of, img_ascii_lcd_matches);
* Scroll the current message along the LCD by one character, rearming the
* timer if required.
*/
static void img_ascii_lcd_scroll(unsigned long arg)
static void img_ascii_lcd_scroll(struct timer_list *t)
{
struct img_ascii_lcd_ctx *ctx = (struct img_ascii_lcd_ctx *)arg;
struct img_ascii_lcd_ctx *ctx = from_timer(ctx, t, timer);
unsigned int i, ch = ctx->scroll_pos;
unsigned int num_chars = ctx->cfg->num_chars;
@ -299,7 +299,7 @@ static int img_ascii_lcd_display(struct img_ascii_lcd_ctx *ctx,
ctx->scroll_pos = 0;
/* update the LCD */
img_ascii_lcd_scroll((unsigned long)ctx);
img_ascii_lcd_scroll(&ctx->timer);
return 0;
}
@ -395,9 +395,7 @@ static int img_ascii_lcd_probe(struct platform_device *pdev)
ctx->scroll_rate = HZ / 2;
/* initialise a timer for scrolling the message */
init_timer(&ctx->timer);
ctx->timer.function = img_ascii_lcd_scroll;
ctx->timer.data = (unsigned long)ctx;
timer_setup(&ctx->timer, img_ascii_lcd_scroll, 0);
platform_set_drvdata(pdev, ctx);

4
drivers/auxdisplay/panel.c
View File

@ -1396,7 +1396,7 @@ static void panel_process_inputs(void)
}
}
static void panel_scan_timer(void)
static void panel_scan_timer(struct timer_list *unused)
{
if (keypad.enabled && keypad_initialized) {
if (spin_trylock_irq(&pprt_lock)) {
@ -1421,7 +1421,7 @@ static void init_scan_timer(void)
if (scan_timer.function)
return; /* already started */
setup_timer(&scan_timer, (void *)&panel_scan_timer, 0);
timer_setup(&scan_timer, panel_scan_timer, 0);
scan_timer.expires = jiffies + INPUT_POLL_TIME;
add_timer(&scan_timer);
}