diff options
| author |   Srinivas Neeli <srinivas.neeli@xilinx.com> | 2021-03-29 21:49:38 +0530 |
|---|---|---|
| committer |   Wim Van Sebroeck <wim@linux-watchdog.org> | 2021-06-21 08:49:07 +0200 |
| commit | f185de2231ce3214bb242f56b5d73641d5269508 (patch) | |
| tree | 5e2b9033e1026e06a5f7cec2bda5d81038d50f7a /drivers/watchdog | |
| parent | watchdog: of_xilinx_wdt: Used dev_dbg() (diff) | |
| download | linux-dev-f185de2231ce3214bb242f56b5d73641d5269508.tar.xz linux-dev-f185de2231ce3214bb242f56b5d73641d5269508.zip | |
watchdog: of_xilinx_wdt: Remove passing null pointer
clk is an optional property, if clock not defined,
calling clk_prepare_enable() and devm_add_action_or_reset()
are not useful.
so calling these two apis only when clock is present.
Addresses-Coverity:"FORWARD_NULL"
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210329161939.37680-5-srinivas.neeli@xilinx.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/of_xilinx_wdt.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/watchdog/of_xilinx_wdt.c b/drivers/watchdog/of_xilinx_wdt.c index 5f31fdea517a..afbff79cce42 100644 --- a/drivers/watchdog/of_xilinx_wdt.c +++ b/drivers/watchdog/of_xilinx_wdt.c @@ -211,6 +211,15 @@ static int xwdt_probe(struct platform_device *pdev) "The watchdog clock freq cannot be obtained\n"); } else { pfreq = clk_get_rate(xdev->clk); + rc = clk_prepare_enable(xdev->clk); + if (rc) { + dev_err(dev, "unable to enable clock\n"); + return rc; + } + rc = devm_add_action_or_reset(dev, xwdt_clk_disable_unprepare, + xdev->clk); + if (rc) + return rc; } /* @@ -224,16 +233,6 @@ static int xwdt_probe(struct platform_device *pdev) spin_lock_init(&xdev->spinlock); watchdog_set_drvdata(xilinx_wdt_wdd, xdev); - rc = clk_prepare_enable(xdev->clk); - if (rc) { - dev_err(dev, "unable to enable clock\n"); - return rc; - } - rc = devm_add_action_or_reset(dev, xwdt_clk_disable_unprepare, - xdev->clk); - if (rc) - return rc; - rc = xwdt_selftest(xdev); if (rc == XWT_TIMER_FAILED) { dev_err(dev, "SelfTest routine error\n"); |