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Posted to commits@nuttx.apache.org by je...@apache.org on 2020/09/01 09:55:23 UTC
[incubator-nuttx] branch master updated: arch: cxd56xx: Use
spinlock API in cxd56_uart.c
This is an automated email from the ASF dual-hosted git repository.
jerpelea pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
The following commit(s) were added to refs/heads/master by this push:
new 7e94997 arch: cxd56xx: Use spinlock API in cxd56_uart.c
7e94997 is described below
commit 7e94997eeb4d5ccd6b59f8e766a5a45dd7a1be31
Author: Masayuki Ishikawa <ma...@gmail.com>
AuthorDate: Tue Sep 1 17:48:30 2020 +0900
arch: cxd56xx: Use spinlock API in cxd56_uart.c
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 <Ma...@jp.sony.com>
---
arch/arm/src/cxd56xx/cxd56_uart.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/src/cxd56xx/cxd56_uart.c b/arch/arm/src/cxd56xx/cxd56_uart.c
index 13f507f..5704739 100644
--- a/arch/arm/src/cxd56xx/cxd56_uart.c
+++ b/arch/arm/src/cxd56xx/cxd56_uart.c
@@ -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);
}
/****************************************************************************