linux-kernel - [PATCH 07/12] clk: Fail duty cycle APIs after clk

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240815005520.1192374-8-sboyd@kernel.org>
Date: Wed, 14 Aug 2024 17:55:13 -0700
From: Stephen Boyd <sboyd@...nel.org>
To: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>
Cc: linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	patches@...ts.linux.dev,
	Nuno Sá <nuno.sa@...log.com>
Subject: [PATCH 07/12] clk: Fail duty cycle APIs after clk_hw is unregistered

The clk duty cycle APIs don't fail when a clk_hw is unregistered. Add a
nodrv clk_op that returns failure so that clk_set_duty_cycle() starts
failing after a clk_hw is unregistered.

Cc: Nuno Sá <nuno.sa@...log.com>
Fixes: 9fba738a53dd ("clk: add duty cycle support")
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
---
 drivers/clk/clk.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 8909294cc52e..a0c275e156ad 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -4518,6 +4518,11 @@ static int clk_nodrv_set_phase(struct clk_hw *hw, int degrees)
 	return -ENXIO;
 }
 
+static int clk_nodrv_set_duty_cycle(struct clk_hw *hw, struct clk_duty *duty)
+{
+	return -ENXIO;
+}
+
 static const struct clk_ops clk_nodrv_ops = {
 	.enable		= clk_nodrv_prepare_enable_get_phase,
 	.disable	= clk_nodrv_disable_unprepare,
@@ -4528,6 +4533,7 @@ static const struct clk_ops clk_nodrv_ops = {
 	.set_parent	= clk_nodrv_set_parent,
 	.get_phase	= clk_nodrv_prepare_enable_get_phase,
 	.set_phase	= clk_nodrv_set_phase,
+	.set_duty_cycle	= clk_nodrv_set_duty_cycle,
 };
 
 static void clk_core_evict_parent_cache_subtree(struct clk_core *root,
-- 
https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git