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| author | Sebastian Reichel <sre@kernel.org> | 2018-08-16 22:19:22 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2018-08-16 22:19:22 +0200 |
| commit | 5198a48381455969aa1053a0ca2e4ce409be2fc2 (patch) | |
| tree | 881914c4a5349e45285d686b1a513c678fcd6894 /drivers/power/reset | |
| parent | power: supply: bq27xxx: Update comments (diff) | |
| parent | power: supply: max77693_charger: fix unintentional fall-through (diff) | |
| download | linux-5198a48381455969aa1053a0ca2e4ce409be2fc2.tar.xz linux-5198a48381455969aa1053a0ca2e4ce409be2fc2.zip | |
Merge branch 'psy-fixes' into psy-next
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power/reset')
| -rw-r--r-- | drivers/power/reset/gemini-poweroff.c | 12 | ||||
| -rw-r--r-- | drivers/power/reset/vexpress-poweroff.c | 12 |
2 files changed, 19 insertions, 5 deletions
diff --git a/drivers/power/reset/gemini-poweroff.c b/drivers/power/reset/gemini-poweroff.c index 2ac291af1265..90e35c07240a 100644 --- a/drivers/power/reset/gemini-poweroff.c +++ b/drivers/power/reset/gemini-poweroff.c @@ -130,7 +130,17 @@ static int gemini_poweroff_probe(struct platform_device *pdev) val |= GEMINI_CTRL_ENABLE; writel(val, gpw->base + GEMINI_PWC_CTRLREG); - /* Now that the state machine is active, clear the IRQ */ + /* Clear the IRQ */ + val = readl(gpw->base + GEMINI_PWC_CTRLREG); + val |= GEMINI_CTRL_IRQ_CLR; + writel(val, gpw->base + GEMINI_PWC_CTRLREG); + + /* Wait for this to clear */ + val = readl(gpw->base + GEMINI_PWC_STATREG); + while (val & 0x70U) + val = readl(gpw->base + GEMINI_PWC_STATREG); + + /* Clear the IRQ again */ val = readl(gpw->base + GEMINI_PWC_CTRLREG); val |= GEMINI_CTRL_IRQ_CLR; writel(val, gpw->base + GEMINI_PWC_CTRLREG); diff --git a/drivers/power/reset/vexpress-poweroff.c b/drivers/power/reset/vexpress-poweroff.c index 102f95a09460..e9e749f87517 100644 --- a/drivers/power/reset/vexpress-poweroff.c +++ b/drivers/power/reset/vexpress-poweroff.c @@ -35,6 +35,7 @@ static void vexpress_reset_do(struct device *dev, const char *what) } static struct device *vexpress_power_off_device; +static atomic_t vexpress_restart_nb_refcnt = ATOMIC_INIT(0); static void vexpress_power_off(void) { @@ -99,10 +100,13 @@ static int _vexpress_register_restart_handler(struct device *dev) int err; vexpress_restart_device = dev; - err = register_restart_handler(&vexpress_restart_nb); - if (err) { - dev_err(dev, "cannot register restart handler (err=%d)\n", err); - return err; + if (atomic_inc_return(&vexpress_restart_nb_refcnt) == 1) { + err = register_restart_handler(&vexpress_restart_nb); + if (err) { + dev_err(dev, "cannot register restart handler (err=%d)\n", err); + atomic_dec(&vexpress_restart_nb_refcnt); + return err; + } } device_create_file(dev, &dev_attr_active); |