Commit 60d1031e authored by Tomoya MORINAGA's avatar Tomoya MORINAGA Committed by Greg Kroah-Hartman

pch_uart: fix exclusive access issue

Signed-off-by: default avatarTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 9af7155b
......@@ -636,7 +636,6 @@ static void pch_dma_tx_complete(void *arg)
priv->tx_dma_use = 0;
priv->nent = 0;
kfree(priv->sg_tx_p);
if (uart_circ_chars_pending(xmit))
pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_TX_INT);
}
......@@ -793,6 +792,14 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
return 0;
}
if (priv->tx_dma_use) {
dev_dbg(priv->port.dev, "%s:Tx is not completed. (%lu)\n",
__func__, jiffies);
pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_TX_INT);
priv->tx_empty = 1;
return 0;
}
fifo_size = max(priv->fifo_size, 1);
tx_empty = 1;
if (pop_tx_x(priv, xmit->buf)) {
......
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