clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops
authorChen-Yu Tsai <wenst@chromium.org>
Mon, 22 Aug 2022 08:14:23 +0000 (16:14 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 8 Sep 2022 10:28:04 +0000 (12:28 +0200)
commit519cd9c4b56e2474c1d592110b52bf59eb9d936b
tree93122322fa998efa25d7f73c9f77dc2e9c26a158
parent0522550aeed4ec899d16e237be0ae67f8aa1319b
clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops

[ Upstream commit 35b0fac808b95eea1212f8860baf6ad25b88b087 ]

In the previous commits that added CLK_OPS_PARENT_ENABLE, support for
this flag was only added to rate change operations (rate setting and
reparent) and disabling unused subtree. It was not added to the
clock gate related operations. Any hardware driver that needs it for
these operations will either see bogus results, or worse, hang.

This has been seen on MT8192 and MT8195, where the imp_ii2_* clk
drivers set this, but dumping debugfs clk_summary would cause it
to hang.

Fixes: fc8726a2c021 ("clk: core: support clocks which requires parents enable (part 2)")
Fixes: a4b3518d146f ("clk: core: support clocks which requires parents enable (part 1)")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: NĂ­colas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: NĂ­colas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20220822081424.1310926-2-wenst@chromium.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/clk/clk.c