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arch: cxd56xx: Use spinlock API in cxd56_uart.c

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Summary:
- This commit improves cxd56_uart performance in SMP mode.

Impact:
- This commit affects SMP mode only.

Testing:
- Tested with spresense:smp

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
This commit is contained in:
Masayuki Ishikawa 2020-09-01 17:48:30 +09:00 committed by Alin Jerpelea
parent 5feab8057c
commit 7e94997eeb
1 changed files with 3 additions and 3 deletions
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6
arch/arm/src/cxd56xx/cxd56_uart.c
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@ -471,7 +471,7 @@ void cxd56_setbaud(uintptr_t uartbase, uint32_t basefreq, uint32_t baud)
uint32_t div;
uint32_t lcr_h;
irqstate_t flags = enter_critical_section();
irqstate_t flags = spin_lock_irqsave();
if (uartbase == CXD56_UART2_BASE)
{
@ -483,7 +483,7 @@ void cxd56_setbaud(uintptr_t uartbase, uint32_t basefreq, uint32_t baud)
}
else
{
leave_critical_section(flags);
spin_unlock_irqrestore(flags);
return;
}
@ -510,7 +510,7 @@ void cxd56_setbaud(uintptr_t uartbase, uint32_t basefreq, uint32_t baud)
putreg32(lcr_h, uartbase + CXD56_UART_LCR_H);
finish:
leave_critical_section(flags);
spin_unlock_irqrestore(flags);
}
/****************************************************************************