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authorPetr Štetiar <ynezz@true.cz>2011-06-17 11:10:04 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-06 20:46:36 +0100
commit186dcaa448c0a7a99933efac2af225fc4fe82c53 (patch)
tree3ec0745cc4fdd8c81260ceda33400e3059eb409f /arch/arm
parent757df746fc5db0020ddab45914617a19d149c252 (diff)
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ARM: 6966/1: ep93xx: fix inverted RTS/DTR signals on uart1
It was discovered by Roberto Bergo, that RTS/DTR signals are inverted after the boot, because it was causing him problems with hardware controlled modem connected on ttyAM0. Todd Valentic came with this patch for the issue. Discussion: http://tech.groups.yahoo.com/group/ts-7000/message/20259 Comments from Petr Štetiar: Sorry, but forget to add Acked-by[1]: 1. https://patchwork.kernel.org/patch/873052/ Cc: Ryan Mallon <ryan@bluewatersys.com> Cc: Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Todd Valentic <todd.valentic@sri.com> Tested-by: Roberto Bergo <roberto.bergo@robson.it> Signed-off-by: Petr Štetiar <ynezz@true.cz> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-ep93xx/core.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 1d4b65f..6659a0d 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -251,9 +251,9 @@ static void ep93xx_uart_set_mctrl(struct amba_device *dev,
unsigned int mcr;
mcr = 0;
- if (!(mctrl & TIOCM_RTS))
+ if (mctrl & TIOCM_RTS)
mcr |= 2;
- if (!(mctrl & TIOCM_DTR))
+ if (mctrl & TIOCM_DTR)
mcr |= 1;
__raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET);