From e1d2b9f024c519788c044ee6a5f694d69973791e Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Mon, 6 Jun 2016 17:58:03 +0200 Subject: [PATCH] clocksource/drivers/mxs: Convert init function to return error The init function does not return any error, it prints a message, returns and lets the caller unaware if the state of the system. Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano --- drivers/clocksource/mxs_timer.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c index f5ce2961c0d6..17b9d1991178 100644 --- a/drivers/clocksource/mxs_timer.c +++ b/drivers/clocksource/mxs_timer.c @@ -226,10 +226,10 @@ static int __init mxs_clocksource_init(struct clk *timer_clk) return 0; } -static void __init mxs_timer_init(struct device_node *np) +static int __init mxs_timer_init(struct device_node *np) { struct clk *timer_clk; - int irq; + int irq, ret; mxs_timrot_base = of_iomap(np, 0); WARN_ON(!mxs_timrot_base); @@ -237,10 +237,12 @@ static void __init mxs_timer_init(struct device_node *np) timer_clk = of_clk_get(np, 0); if (IS_ERR(timer_clk)) { pr_err("%s: failed to get clk\n", __func__); - return; + return PTR_ERR(timer_clk); } - clk_prepare_enable(timer_clk); + ret = clk_prepare_enable(timer_clk); + if (ret) + return ret; /* * Initialize timers to a known state @@ -278,11 +280,19 @@ static void __init mxs_timer_init(struct device_node *np) mxs_timrot_base + HW_TIMROT_FIXED_COUNTn(1)); /* init and register the timer to the framework */ - mxs_clocksource_init(timer_clk); - mxs_clockevent_init(timer_clk); + ret = mxs_clocksource_init(timer_clk); + if (ret) + return ret; + + ret = mxs_clockevent_init(timer_clk); + if (ret) + return ret; /* Make irqs happen */ irq = irq_of_parse_and_map(np, 0); - setup_irq(irq, &mxs_timer_irq); + if (irq <= 0) + return -EINVAL; + + return setup_irq(irq, &mxs_timer_irq); } -CLOCKSOURCE_OF_DECLARE(mxs, "fsl,timrot", mxs_timer_init); +CLOCKSOURCE_OF_DECLARE_RET(mxs, "fsl,timrot", mxs_timer_init); -- 2.20.1