From: shc_work@mail.ru (Alexander Shiyan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/4] ARM: clps711x: Fix lowlevel debug-macro
Date: Tue, 21 Aug 2012 20:59:34 +0400 [thread overview]
Message-ID: <1345568375-28516-3-git-send-email-shc_work@mail.ru> (raw)
In-Reply-To: <1345568375-28516-1-git-send-email-shc_work@mail.ru>
CTS signal can not be used for the port and tied to any logic state.
In this case we have an infinite loop waiting for the signal. For fix
this problem, checking CTS removed, waiting for the signal "busy" was
postponed after the byte write to the port.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
---
arch/arm/mach-clps711x/include/mach/debug-macro.S | 8 +-------
1 files changed, 1 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-clps711x/include/mach/debug-macro.S b/arch/arm/mach-clps711x/include/mach/debug-macro.S
index 118b3d9..cb3684f 100644
--- a/arch/arm/mach-clps711x/include/mach/debug-macro.S
+++ b/arch/arm/mach-clps711x/include/mach/debug-macro.S
@@ -28,17 +28,11 @@
.endm
.macro waituart,rd,rx
-1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx
- tst \rd, #1 << 11 @ UBUSYx
- bne 1001b
.endm
.macro busyuart,rd,rx
- tst \rx, #0x1000 @ UART2 does not have CTS here
- bne 1002f
1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx
- tst \rd, #1 << 8 @ CTS
+ tst \rd, #1 << 11 @ UBUSYx
bne 1001b
-1002:
.endm
--
1.7.8.6
next prev parent reply other threads:[~2012-08-21 16:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-21 16:59 [PATCH 1/4] ARM: clps711x: Remove board support for CEIVA Alexander Shiyan
2012-08-21 16:59 ` [PATCH 2/4] ARM: clps711x: Fix register definitions Alexander Shiyan
2012-08-21 16:59 ` Alexander Shiyan [this message]
2012-08-21 16:59 ` [PATCH 4/4] ARM: clps711x: Added simple clock framework Alexander Shiyan
2012-08-21 19:50 ` [PATCH 1/4] ARM: clps711x: Remove board support for CEIVA Arnd Bergmann
2012-08-21 20:31 ` Colin Cross
2012-09-28 19:18 ` Arnd Bergmann
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