From: Stephen Boyd <sboyd@kernel.org>
To: Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
Douglas Anderson <dianders@chromium.org>,
Heiko Stuebner <heiko@sntech.de>,
Jerome Brunet <jbrunet@baylibre.com>
Subject: [PATCH v2 4/4] clk: Bail out when calculating phase fails during clk registration
Date: Wed, 5 Feb 2020 15:28:02 -0800 [thread overview]
Message-ID: <20200205232802.29184-5-sboyd@kernel.org> (raw)
In-Reply-To: <20200205232802.29184-1-sboyd@kernel.org>
Bail out of clk registration if we fail to get the phase for a clk that
has a clk_ops::get_phase() callback. Print a warning too so that driver
authors can easily figure out that some clk is unable to read back phase
information at boot.
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Suggested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
drivers/clk/clk.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 87532e2d124a..e9e83f7ae9e0 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -3457,7 +3457,12 @@ static int __clk_core_init(struct clk_core *core)
* Since a phase is by definition relative to its parent, just
* query the current clock phase, or just assume it's in phase.
*/
- clk_core_get_phase(core);
+ ret = clk_core_get_phase(core);
+ if (ret < 0) {
+ pr_warn("%s: Failed to get phase for clk '%s'\n", __func__,
+ core->name);
+ goto out;
+ }
/*
* Set clk's duty cycle.
--
Sent by a computer, using git, on the internet
next prev parent reply other threads:[~2020-02-05 23:28 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-05 23:27 [PATCH v2 0/4] clk_phase error caching problems Stephen Boyd
2020-02-05 23:27 ` [PATCH v2 1/4] clk: Don't cache errors from clk_ops::get_phase() Stephen Boyd
2020-02-06 8:26 ` Jerome Brunet
2020-02-12 23:27 ` Stephen Boyd
2020-02-12 23:28 ` Stephen Boyd
2020-02-05 23:28 ` [PATCH v2 2/4] clk: Use 'parent' to shorten lines in __clk_core_init() Stephen Boyd
2020-02-12 23:28 ` Stephen Boyd
2020-02-05 23:28 ` [PATCH v2 3/4] clk: Move rate and accuracy recalc to mostly consumer APIs Stephen Boyd
2020-02-12 23:28 ` Stephen Boyd
2020-02-05 23:28 ` Stephen Boyd [this message]
2020-02-12 23:28 ` [PATCH v2 4/4] clk: Bail out when calculating phase fails during clk registration Stephen Boyd
2020-02-06 8:27 ` [PATCH v2 0/4] clk_phase error caching problems Jerome Brunet
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