Mingqiang Chi b1357cdc0d hv:use spinlock_irqsave_obtain api for uart ...

replace spinlock_obtain/spinlock_release with spinlock_irqsave_obtain
and spinlock_irqrestore_release to avoid dead lock for uart module.

this uart lock may be accessed in ISR context like this path:
   dispatch_interrupt->pr_err/pr_xxx or printf
   ->console_write->uart16550_puts

Tracked-On: #4958

Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>

2020-07-03 17:41:17 +08:00

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