From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
linux-serial@vger.kernel.org,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
stable@vger.kernel.org,
"Andy Shevchenko" <andy.shevchenko@gmail.com>
Subject: [PATCH v2 RESEND 3/3] serial: tegra-tcu: Use uart_xmit_advance(), fixes icount.tx accounting
Date: Thu, 1 Sep 2022 17:39:34 +0300 [thread overview]
Message-ID: <20220901143934.8850-4-ilpo.jarvinen@linux.intel.com> (raw)
In-Reply-To: <20220901143934.8850-1-ilpo.jarvinen@linux.intel.com>
Tx'ing does not correctly account Tx'ed characters into icount.tx.
Using uart_xmit_advance() fixes the problem.
Cc: <stable@vger.kernel.org> # serial: Create uart_xmit_advance()
Fixes: 2d908b38d409 ("serial: Add Tegra Combined UART driver")
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
drivers/tty/serial/tegra-tcu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/tegra-tcu.c b/drivers/tty/serial/tegra-tcu.c
index 4877c54c613d..889b701ba7c6 100644
--- a/drivers/tty/serial/tegra-tcu.c
+++ b/drivers/tty/serial/tegra-tcu.c
@@ -101,7 +101,7 @@ static void tegra_tcu_uart_start_tx(struct uart_port *port)
break;
tegra_tcu_write(tcu, &xmit->buf[xmit->tail], count);
- xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
+ uart_xmit_advance(port, count);
}
uart_write_wakeup(port);
--
2.30.2
next prev parent reply other threads:[~2022-09-01 14:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-01 14:39 [PATCH v2 RESEND 0/3] serial: Add uart_xmit_advance() + fixes part (of a larger patch series) Ilpo Järvinen
2022-09-01 14:39 ` [PATCH v2 RESEND 1/3] serial: Create uart_xmit_advance() Ilpo Järvinen
2022-09-01 14:39 ` [PATCH v2 RESEND 2/3] serial: tegra: Use uart_xmit_advance(), fixes icount.tx accounting Ilpo Järvinen
2022-09-01 14:39 ` Ilpo Järvinen [this message]
2022-09-15 12:26 ` [PATCH v2 RESEND 3/3] serial: tegra-tcu: " Thierry Reding
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