From: Thomas Fourier <fourier.thomas@gmail.com>
Cc: Thomas Fourier <fourier.thomas@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: [PATCH] pch_uart: Fix dma_sync_sg_for_device() nents value
Date: Mon, 30 Jun 2025 13:41:21 +0200 [thread overview]
Message-ID: <20250630114124.102326-2-fourier.thomas@gmail.com> (raw)
The dma_sync_sg_for_device() functions should be called with the same
nents as the dma_map_sg(), not the value the map function returned.
Fixes: da3564ee027e ("pch_uart: add multi-scatter processing")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
---
drivers/tty/serial/pch_uart.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 508e8c6f01d4..5aee3fdba8a1 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -954,7 +954,7 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
__func__);
return 0;
}
- dma_sync_sg_for_device(port->dev, priv->sg_tx_p, nent, DMA_TO_DEVICE);
+ dma_sync_sg_for_device(port->dev, priv->sg_tx_p, priv->nent, DMA_TO_DEVICE);
priv->desc_tx = desc;
desc->callback = pch_dma_tx_complete;
desc->callback_param = priv;
--
2.43.0
next reply other threads:[~2025-06-30 11:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-30 11:41 Thomas Fourier [this message]
2025-06-30 11:44 ` [PATCH] pch_uart: Fix dma_sync_sg_for_device() nents value Jiri Slaby
2025-06-30 11:48 ` Greg Kroah-Hartman
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