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author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-06-06 23:28:36 +0200 |
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committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-06-28 10:19:31 +0200 |
commit | e4d9f2ee4ef53d4637308921602e5406d5540e0d (patch) | |
tree | 91c6977b72db9769f78a7ec47e7cee2e017bf873 /drivers/clocksource/timer-sun5i.c | |
parent | 38d94c5ae2dc60d6b54127695df9447e86a7d402 (diff) | |
download | linux-e4d9f2ee4ef53d4637308921602e5406d5540e0d.tar.bz2 |
clocksource/drivers/sun5i: Convert init function to return error
The init functions do not return any error. They behave as the following:
- panic, thus leading to a kernel crash while another timer may work and
make the system boot up correctly
or
- print an error and let 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 <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource/timer-sun5i.c')
-rw-r--r-- | drivers/clocksource/timer-sun5i.c | 37 |
1 files changed, 23 insertions, 14 deletions
diff --git a/drivers/clocksource/timer-sun5i.c b/drivers/clocksource/timer-sun5i.c index 24c83f9efd87..f0a3ffbab431 100644 --- a/drivers/clocksource/timer-sun5i.c +++ b/drivers/clocksource/timer-sun5i.c @@ -311,33 +311,42 @@ err_free: return ret; } -static void __init sun5i_timer_init(struct device_node *node) +static int __init sun5i_timer_init(struct device_node *node) { struct reset_control *rstc; void __iomem *timer_base; struct clk *clk; - int irq; + int irq, ret; timer_base = of_io_request_and_map(node, 0, of_node_full_name(node)); - if (IS_ERR(timer_base)) - panic("Can't map registers"); + if (IS_ERR(timer_base)) { + pr_err("Can't map registers"); + return PTR_ERR(timer_base);; + } irq = irq_of_parse_and_map(node, 0); - if (irq <= 0) - panic("Can't parse IRQ"); + if (irq <= 0) { + pr_err("Can't parse IRQ"); + return -EINVAL; + } clk = of_clk_get(node, 0); - if (IS_ERR(clk)) - panic("Can't get timer clock"); + if (IS_ERR(clk)) { + pr_err("Can't get timer clock"); + return PTR_ERR(clk); + } rstc = of_reset_control_get(node, NULL); if (!IS_ERR(rstc)) reset_control_deassert(rstc); - sun5i_setup_clocksource(node, timer_base, clk, irq); - sun5i_setup_clockevent(node, timer_base, clk, irq); + ret = sun5i_setup_clocksource(node, timer_base, clk, irq); + if (ret) + return ret; + + return sun5i_setup_clockevent(node, timer_base, clk, irq); } -CLOCKSOURCE_OF_DECLARE(sun5i_a13, "allwinner,sun5i-a13-hstimer", - sun5i_timer_init); -CLOCKSOURCE_OF_DECLARE(sun7i_a20, "allwinner,sun7i-a20-hstimer", - sun5i_timer_init); +CLOCKSOURCE_OF_DECLARE_RET(sun5i_a13, "allwinner,sun5i-a13-hstimer", + sun5i_timer_init); +CLOCKSOURCE_OF_DECLARE_RET(sun7i_a20, "allwinner,sun7i-a20-hstimer", + sun5i_timer_init); |