target/linux/s3c24xx/patches-2.6.24/1159-Fixup-hang-on-resume-caused-by-the-s3c2410-touch-scr.patch

   1 From 7b7d70785f1b3c1421d56ee8140578fea3b90f9c Mon Sep 17 00:00:00 2001
   2 From: Holger Freyther <zecke@openmoko.org>
   3 Date: Thu, 15 May 2008 21:47:56 +0100
   4 Subject: [PATCH] Fixup hang on resume caused by the s3c2410 touch screen driver
   5
   6 From dc6d335b467646d802a21ea6b925ee97e83e07be Mon Sep 17 00:00:00 2001
   7 From: Holger Freyther <zecke@openmoko.org>
   8 Date: Thu, 15 May 2008 01:16:23 +0200
   9 Subject: [PATCH] Do not use msleep in the resume path of s3c2410_ts as it
  10 might lockup
  11
  12 For some reason msleep might set the only task running into a suspended
  13 state and no timer will ever wake it up. Use mdelay to avoid this. I was not
  14 able to understand the reasoning of sleeping after enabling the clock. So we
  15 might just remove the msleep/mdelay at all and be fine.
  16
  17 Signed-Off-By: Holger Freyther <zecke@openmoko.org>
  18 ---
  19  drivers/input/touchscreen/s3c2410_ts.c |    2 +-
  20  1 files changed, 1 insertions(+), 1 deletions(-)
  21
  22 diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
  23 index 68071c2..6d395ca 100644
  24 --- a/drivers/input/touchscreen/s3c2410_ts.c
  25 +++ b/drivers/input/touchscreen/s3c2410_ts.c
  26 @@ -356,7 +356,7 @@ static int s3c2410ts_resume(struct platform_device *pdev)
  27                 ( struct s3c2410_ts_mach_info *)pdev->dev.platform_data;
  28
  29         clk_enable(adc_clock);
  30 -       msleep(1);
  31 +       mdelay(1);
  32
  33         enable_irq(IRQ_ADC);
  34         enable_irq(IRQ_TC);
  35 --
  36 1.5.6.5
  37