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Message-Id: <1244555211-15618-4-git-send-email-os@emlix.com> Date: Tue, 9 Jun 2009 15:46:46 +0200 From: "Oskar Schirmer" <os@...ix.com> To: Sascha Hauer <kernel@...gutronix.de> Cc: linux-kernel@...r.kernel.org, Fabian Godehardt <fg@...ix.com>, Oskar Schirmer <os@...ix.com> Subject: [PATCH 3/8] imx: serial: notify higher layers in case xmit IRQ was not called From: Fabian Godehardt <fg@...ix.com> upper layers, namely line discipline, need to be notified when transmission of more data is possible. For spurious cases, where IRQ handling does not supply notification for sure, it is given additionally here, when data has just been transmitted and space in the buffer will most probably be available. Signed-off-by: Fabian Godehardt <fg@...ix.com> Signed-off-by: Oskar Schirmer <os@...ix.com> --- drivers/serial/imx.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index 5ee325f..afcec9e 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -308,6 +308,9 @@ static inline void imx_transmit_buffer(struct imx_port *sport) break; } + if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) + uart_write_wakeup(&sport->port); + if (uart_circ_empty(xmit)) imx_stop_tx(&sport->port); } -- 1.5.3.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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