From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: [PATCH 03/13] serial: 8250_dma: Support for deferred probing when requesting DMA channels Date: Tue, 26 May 2015 16:25:58 +0300 Message-ID: <1432646768-12532-4-git-send-email-peter.ujfalusi@ti.com> References: <1432646768-12532-1-git-send-email-peter.ujfalusi@ti.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , , , , , , , , , Greg Kroah-Hartman To: , Return-path: In-Reply-To: <1432646768-12532-1-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-crypto.vger.kernel.org Switch to use ma_request_slave_channel_compat_reason() to request the DMA channels. In case of error, return the error code we received including -EPROBE_DEFER Signed-off-by: Peter Ujfalusi CC: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_dma.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 21d01a491405..a617eca4e97d 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -182,21 +182,19 @@ int serial8250_request_dma(struct uart_8250_port *p) dma_cap_set(DMA_SLAVE, mask); /* Get a channel for RX */ - dma->rxchan = dma_request_slave_channel_compat(mask, - dma->fn, dma->rx_param, - p->port.dev, "rx"); - if (!dma->rxchan) - return -ENODEV; + dma->rxchan = dma_request_slave_channel_compat_reason(mask, dma->fn, + dma->rx_param, p->port.dev, "rx"); + if (IS_ERR(dma->rxchan)) + return PTR_ERR(dma->rxchan); dmaengine_slave_config(dma->rxchan, &dma->rxconf); /* Get a channel for TX */ - dma->txchan = dma_request_slave_channel_compat(mask, - dma->fn, dma->tx_param, - p->port.dev, "tx"); - if (!dma->txchan) { + dma->txchan = dma_request_slave_channel_compat_reason(mask, dma->fn, + dma->tx_param, p->port.dev, "tx"); + if (IS_ERR(dma->txchan)) { dma_release_channel(dma->rxchan); - return -ENODEV; + return PTR_ERR(dma->txchan); } dmaengine_slave_config(dma->txchan, &dma->txconf); -- 2.3.5 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754485AbbEZN0x (ORCPT ); Tue, 26 May 2015 09:26:53 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:50979 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754375AbbEZN0l (ORCPT ); Tue, 26 May 2015 09:26:41 -0400 From: Peter Ujfalusi To: , CC: , , , , , , , , , , , Greg Kroah-Hartman Subject: [PATCH 03/13] serial: 8250_dma: Support for deferred probing when requesting DMA channels Date: Tue, 26 May 2015 16:25:58 +0300 Message-ID: <1432646768-12532-4-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.3.5 In-Reply-To: <1432646768-12532-1-git-send-email-peter.ujfalusi@ti.com> References: <1432646768-12532-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Switch to use ma_request_slave_channel_compat_reason() to request the DMA channels. In case of error, return the error code we received including -EPROBE_DEFER Signed-off-by: Peter Ujfalusi CC: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_dma.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 21d01a491405..a617eca4e97d 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -182,21 +182,19 @@ int serial8250_request_dma(struct uart_8250_port *p) dma_cap_set(DMA_SLAVE, mask); /* Get a channel for RX */ - dma->rxchan = dma_request_slave_channel_compat(mask, - dma->fn, dma->rx_param, - p->port.dev, "rx"); - if (!dma->rxchan) - return -ENODEV; + dma->rxchan = dma_request_slave_channel_compat_reason(mask, dma->fn, + dma->rx_param, p->port.dev, "rx"); + if (IS_ERR(dma->rxchan)) + return PTR_ERR(dma->rxchan); dmaengine_slave_config(dma->rxchan, &dma->rxconf); /* Get a channel for TX */ - dma->txchan = dma_request_slave_channel_compat(mask, - dma->fn, dma->tx_param, - p->port.dev, "tx"); - if (!dma->txchan) { + dma->txchan = dma_request_slave_channel_compat_reason(mask, dma->fn, + dma->tx_param, p->port.dev, "tx"); + if (IS_ERR(dma->txchan)) { dma_release_channel(dma->rxchan); - return -ENODEV; + return PTR_ERR(dma->txchan); } dmaengine_slave_config(dma->txchan, &dma->txconf); -- 2.3.5 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: [PATCH 03/13] serial: 8250_dma: Support for deferred probing when requesting DMA channels Date: Tue, 26 May 2015 16:25:58 +0300 Message-ID: <1432646768-12532-4-git-send-email-peter.ujfalusi@ti.com> References: <1432646768-12532-1-git-send-email-peter.ujfalusi@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1432646768-12532-1-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-crypto-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org, Greg Kroah-Hartman List-Id: devicetree@vger.kernel.org Switch to use ma_request_slave_channel_compat_reason() to request the DMA channels. In case of error, return the error code we received including -EPROBE_DEFER Signed-off-by: Peter Ujfalusi CC: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_dma.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 21d01a491405..a617eca4e97d 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -182,21 +182,19 @@ int serial8250_request_dma(struct uart_8250_port *p) dma_cap_set(DMA_SLAVE, mask); /* Get a channel for RX */ - dma->rxchan = dma_request_slave_channel_compat(mask, - dma->fn, dma->rx_param, - p->port.dev, "rx"); - if (!dma->rxchan) - return -ENODEV; + dma->rxchan = dma_request_slave_channel_compat_reason(mask, dma->fn, + dma->rx_param, p->port.dev, "rx"); + if (IS_ERR(dma->rxchan)) + return PTR_ERR(dma->rxchan); dmaengine_slave_config(dma->rxchan, &dma->rxconf); /* Get a channel for TX */ - dma->txchan = dma_request_slave_channel_compat(mask, - dma->fn, dma->tx_param, - p->port.dev, "tx"); - if (!dma->txchan) { + dma->txchan = dma_request_slave_channel_compat_reason(mask, dma->fn, + dma->tx_param, p->port.dev, "tx"); + if (IS_ERR(dma->txchan)) { dma_release_channel(dma->rxchan); - return -ENODEV; + return PTR_ERR(dma->txchan); } dmaengine_slave_config(dma->txchan, &dma->txconf); -- 2.3.5 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html