target/linux/brcm2708/patches-4.19/950-0562-soc-bcm-bcm2835-pm-Fix-PM_IMAGE_PERI-power-domain-su.patch

   1 From 81f47bb7d51490b62ba2fad6c0be42bf0e4e13a2 Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Fri, 11 Jan 2019 17:29:10 -0800
   4 Subject: [PATCH 562/703] soc: bcm: bcm2835-pm: Fix PM_IMAGE_PERI power domain
   5  support.
   6
   7 We don't have ASB master/slave regs for this domain, so just skip that
   8 step.
   9
  10 Signed-off-by: Eric Anholt <eric@anholt.net>
  11 Fixes: 670c672608a1 ("soc: bcm: bcm2835-pm: Add support for power domains under a new binding.")
  12 ---
  13  drivers/soc/bcm/bcm2835-power.c | 14 ++++++++++++--
  14  1 file changed, 12 insertions(+), 2 deletions(-)
  15
  16 --- a/drivers/soc/bcm/bcm2835-power.c
  17 +++ b/drivers/soc/bcm/bcm2835-power.c
  18 @@ -150,7 +150,12 @@ struct bcm2835_power {
  19
  20  static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
  21  {
  22 -       u64 start = ktime_get_ns();
  23 +       u64 start;
  24 +
  25 +       if (!reg)
  26 +               return 0;
  27 +
  28 +       start = ktime_get_ns();
  29
  30         /* Enable the module's async AXI bridges. */
  31         ASB_WRITE(reg, ASB_READ(reg) & ~ASB_REQ_STOP);
  32 @@ -165,7 +170,12 @@ static int bcm2835_asb_enable(struct bcm
  33
  34  static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
  35  {
  36 -       u64 start = ktime_get_ns();
  37 +       u64 start;
  38 +
  39 +       if (!reg)
  40 +               return 0;
  41 +
  42 +       start = ktime_get_ns();
  43
  44         /* Enable the module's async AXI bridges. */
  45         ASB_WRITE(reg, ASB_READ(reg) | ASB_REQ_STOP);