target/linux/bcm27xx/patches-5.10/950-0369-watchdog-bcm2835-Ignore-params-after-the-partition-n.patch

   1 From c518032ec09c3e21872a5b2f9114655d55d9ade1 Mon Sep 17 00:00:00 2001
   2 From: Tim Gover <tim.gover@raspberrypi.org>
   3 Date: Thu, 22 Oct 2020 15:30:55 +0100
   4 Subject: [PATCH] watchdog: bcm2835: Ignore params after the partition
   5  number
   6
   7 Use sscanf to extract the partition number and ignore extra parameters
   8 which are only relevant to other reboot notifiers.
   9 ---
  10  drivers/watchdog/bcm2835_wdt.c | 6 ++++--
  11  1 file changed, 4 insertions(+), 2 deletions(-)
  12
  13 --- a/drivers/watchdog/bcm2835_wdt.c
  14 +++ b/drivers/watchdog/bcm2835_wdt.c
  15 @@ -126,10 +126,12 @@ static int bcm2835_restart(struct watchd
  16  {
  17         struct bcm2835_wdt *wdt = watchdog_get_drvdata(wdog);
  18
  19 -       unsigned long long val;
  20 +       unsigned long val;
  21         u8 partition = 0;
  22
  23 -       if (data && !kstrtoull(data, 0, &val) && val <= 63)
  24 +       // Allow extra arguments separated by spaces after
  25 +       // the partition number.
  26 +       if (data && sscanf(data, "%lu", &val) && val < 63)
  27                 partition = val;
  28
  29         __bcm2835_restart(wdt, partition);