This is a note to let you know that I've just added the patch titled
interconnect: Restore sync state by ignoring ipa-virt in provider count
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
interconnect-restore-sync-state-by-ignoring-ipa-virt-in-provider-count.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Jun 13 10:02:03 AM CEST 2022
From: Alex Elder <elder@xxxxxxxxxx>
Date: Wed, 8 Jun 2022 15:54:15 -0500
Subject: interconnect: Restore sync state by ignoring ipa-virt in provider count
To: stable@xxxxxxxxxxxxxxx
Cc: Stephen Boyd <swboyd@xxxxxxxxxxxx>, elder@xxxxxxxxxx, dianders@xxxxxxxxxxxx, bjorn.andersson@xxxxxxxxxx, djakov@xxxxxxxxxx, quic_mdtipton@xxxxxxxxxxx, quic_tdas@xxxxxxxxxxx
Message-ID: <20220608205415.185248-3-elder@xxxxxxxxxx>
From: Stephen Boyd <swboyd@xxxxxxxxxxxx>
commit 20ce30fb4750f2ffc130cdcb26232b1dd87cd0a5 upstream.
Ignore compatible strings for the IPA virt drivers that were removed in
commits 2fb251c26560 ("interconnect: qcom: sdx55: Drop IP0
interconnects") and 2f3724930eb4 ("interconnect: qcom: sc7180: Drop IP0
interconnects") so that the sync state logic can kick in again.
Otherwise all the interconnects in the system will stay pegged at max
speeds because 'providers_count' is always going to be one larger than
the number of drivers that will ever probe on sc7180 or sdx55. This
fixes suspend on sc7180 and sdx55 devices when you don't have a
devicetree patch to remove the ipa-virt compatible node.
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Cc: Doug Anderson <dianders@xxxxxxxxxxxx>
Cc: Alex Elder <elder@xxxxxxxxxx>
Cc: Taniya Das <quic_tdas@xxxxxxxxxxx>
Cc: Mike Tipton <quic_mdtipton@xxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 5.10.x
Fixes: 2fb251c26560 ("interconnect: qcom: sdx55: Drop IP0 interconnects")
Fixes: 2f3724930eb4 ("interconnect: qcom: sc7180: Drop IP0 interconnects")
Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Reviewed-by: Alex Elder <elder@xxxxxxxxxx>
Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220427013226.341209-1-swboyd@xxxxxxxxxxxx
Signed-off-by: Georgi Djakov <djakov@xxxxxxxxxx>
Signed-off-by: Alex Elder <elder@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/interconnect/core.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -1084,9 +1084,14 @@ static int of_count_icc_providers(struct
{
struct device_node *child;
int count = 0;
+ const struct of_device_id __maybe_unused ignore_list[] = {
+ { .compatible = "qcom,sc7180-ipa-virt" },
+ {}
+ };
for_each_available_child_of_node(np, child) {
- if (of_property_read_bool(child, "#interconnect-cells"))
+ if (of_property_read_bool(child, "#interconnect-cells") &&
+ likely(!of_match_node(ignore_list, child)))
count++;
count += of_count_icc_providers(child);
}
Patches currently in stable-queue which might be from elder@xxxxxxxxxx are
queue-5.10/interconnect-restore-sync-state-by-ignoring-ipa-virt-in-provider-count.patch
queue-5.10/interconnect-qcom-sc7180-drop-ip0-interconnects.patch
