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Message-Id: <20170628135345.9337-1-jbrunet@baylibre.com>
Date: Wed, 28 Jun 2017 15:53:45 +0200
From: Jerome Brunet <jbrunet@...libre.com>
To: Sudeep Holla <sudeep.holla@....com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>
Cc: Jerome Brunet <jbrunet@...libre.com>,
linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org,
Neil Armstrong <narmstrong@...libre.com>,
Kevin Hilman <khilman@...libre.com>
Subject: [PATCH] clk: scpi: error when clock fails to register
Current implementation of scpi_clk_add just print a warning when clock
fails to register but then keep going as if nothing happened. The
provider is then registered with bogus data.
This may latter lead to an Oops in __clk_create_clk when
hlist_add_head(&clk->clks_node, &hw->core->clks) is called.
This patch fixes the issue and errors if a clock fails to register.
Fixes: cd52c2a4b5c4 ("clk: add support for clocks provided by SCP(System Control Processor)")
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
drivers/clk/clk-scpi.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/clk-scpi.c b/drivers/clk/clk-scpi.c
index 96d37175d0ad..e44b5ca91fed 100644
--- a/drivers/clk/clk-scpi.c
+++ b/drivers/clk/clk-scpi.c
@@ -245,10 +245,12 @@ static int scpi_clk_add(struct device *dev, struct device_node *np,
sclk->id = val;
err = scpi_clk_ops_init(dev, match, sclk, name);
- if (err)
+ if (err) {
dev_err(dev, "failed to register clock '%s'\n", name);
- else
- dev_dbg(dev, "Registered clock '%s'\n", name);
+ return err;
+ }
+
+ dev_dbg(dev, "Registered clock '%s'\n", name);
clk_data->clk[idx] = sclk;
}
--
2.9.4
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