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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-07-27 11:49:37 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-07-27 11:49:37 +0200
commit65a9bde6ed484880987a6d88de6e372eca52059f (patch)
treea192e1a8a54d334f457413f9c16041ffdf11533d /drivers/bus
parent860e73b49cd933c708e3e1e1e07cdea81b6acd1c (diff)
parent92ed301919932f777713b9172e525674157e983d (diff)
Merge 5.8-rc7 into char-misc-next
This should resolve the merge/build issues reported when trying to create linux-next. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bus')
-rw-r--r--drivers/bus/ti-sysc.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 4f513fa3362f..191c97b84715 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -2865,6 +2865,24 @@ static int sysc_check_disabled_devices(struct sysc *ddata)
return error;
}
+/*
+ * Ignore timers tagged with no-reset and no-idle. These are likely in use,
+ * for example by drivers/clocksource/timer-ti-dm-systimer.c. If more checks
+ * are needed, we could also look at the timer register configuration.
+ */
+static int sysc_check_active_timer(struct sysc *ddata)
+{
+ if (ddata->cap->type != TI_SYSC_OMAP2_TIMER &&
+ ddata->cap->type != TI_SYSC_OMAP4_TIMER)
+ return 0;
+
+ if ((ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT) &&
+ (ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE))
+ return -EBUSY;
+
+ return 0;
+}
+
static const struct of_device_id sysc_match_table[] = {
{ .compatible = "simple-bus", },
{ /* sentinel */ },
@@ -2921,6 +2939,10 @@ static int sysc_probe(struct platform_device *pdev)
if (error)
return error;
+ error = sysc_check_active_timer(ddata);
+ if (error)
+ return error;
+
error = sysc_get_clocks(ddata);
if (error)
return error;