[PATCH v4 5/7] wdt: dw: Free the clock on error
Sean Anderson
seanga2 at gmail.com
Wed Sep 9 23:04:18 CEST 2020
The clock subsystem requires that clk_free be called on clocks obtained via
clk_get_*.
Signed-off-by: Sean Anderson <seanga2 at gmail.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---
Changes in v4:
- Fix build error without CONFIG_CLK
drivers/watchdog/designware_wdt.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/watchdog/designware_wdt.c b/drivers/watchdog/designware_wdt.c
index e6f5437056..b952737fb4 100644
--- a/drivers/watchdog/designware_wdt.c
+++ b/drivers/watchdog/designware_wdt.c
@@ -131,11 +131,13 @@ static int designware_wdt_probe(struct udevice *dev)
ret = clk_enable(&clk);
if (ret)
- return ret;
+ goto err;
priv->clk_khz = clk_get_rate(&clk) / 1000;
- if (!priv->clk_khz)
- return -EINVAL;
+ if (!priv->clk_khz) {
+ ret = -EINVAL;
+ goto err;
+ }
#else
priv->clk_khz = CONFIG_DW_WDT_CLOCK_KHZ;
#endif
@@ -145,15 +147,21 @@ static int designware_wdt_probe(struct udevice *dev)
ret = reset_get_bulk(dev, &resets);
if (ret)
- return ret;
+ goto err;
ret = reset_deassert_bulk(&resets);
if (ret)
- return ret;
+ goto err;
}
/* reset to disable the watchdog */
return designware_wdt_stop(dev);
+
+err:
+#if CONFIG_IS_ENABLED(CLK)
+ clk_free(&clk);
+#endif
+ return ret;
}
static const struct wdt_ops designware_wdt_ops = {
--
2.28.0
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