From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: <vinod.koul@intel.com>, <tony@atomide.com>
Cc: <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<dan.j.williams@intel.com>, <dmaengine@vger.kernel.org>,
<linux-serial@vger.kernel.org>, <linux-omap@vger.kernel.org>,
<linux-mmc@vger.kernel.org>, <linux-crypto@vger.kernel.org>,
<linux-spi@vger.kernel.org>, <linux-media@vger.kernel.org>,
<alsa-devel@alsa-project.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Jarkko Nikula <jarkko.nikula@bitmer.com>
Subject: [PATCH 06/13] mmc: omap: Support for deferred probing when requesting DMA channels
Date: Tue, 26 May 2015 16:26:01 +0300 [thread overview]
Message-ID: <1432646768-12532-7-git-send-email-peter.ujfalusi@ti.com> (raw)
In-Reply-To: <1432646768-12532-1-git-send-email-peter.ujfalusi@ti.com>
Switch to use ma_request_slave_channel_compat_reason() to request the DMA
channels. Only fall back to pio mode if the error code returned is not
-EPROBE_DEFER, otherwise return from the probe with the -EPROBE_DEFER.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
CC: Ulf Hansson <ulf.hansson@linaro.org>
CC: Jarkko Nikula <jarkko.nikula@bitmer.com>
---
drivers/mmc/host/omap.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 68dd6c79c378..29238d0fbc24 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1390,20 +1390,32 @@ static int mmc_omap_probe(struct platform_device *pdev)
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
if (res)
sig = res->start;
- host->dma_tx = dma_request_slave_channel_compat(mask,
+ host->dma_tx = dma_request_slave_channel_compat_reason(mask,
omap_dma_filter_fn, &sig, &pdev->dev, "tx");
- if (!host->dma_tx)
+ if (IS_ERR(host->dma_tx)) {
+ ret = PTR_ERR(host->dma_tx);
+ if (ret == -EPROBE_DEFER)
+ goto err_free_dma;
+
+ host->dma_tx = NULL;
dev_warn(host->dev, "unable to obtain TX DMA engine channel %u\n",
sig);
+ }
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
if (res)
sig = res->start;
- host->dma_rx = dma_request_slave_channel_compat(mask,
+ host->dma_rx = dma_request_slave_channel_compat_reason(mask,
omap_dma_filter_fn, &sig, &pdev->dev, "rx");
- if (!host->dma_rx)
+ if (IS_ERR(host->dma_rx)) {
+ ret = PTR_ERR(host->dma_rx);
+ if (ret == -EPROBE_DEFER)
+ goto err_free_dma;
+
+ host->dma_rx = NULL;
dev_warn(host->dev, "unable to obtain RX DMA engine channel %u\n",
sig);
+ }
ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
if (ret)
--
2.3.5
WARNING: multiple messages have this Message-ID (diff)
From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: vinod.koul@intel.com, tony@atomide.com
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
dan.j.williams@intel.com, dmaengine@vger.kernel.org,
linux-serial@vger.kernel.org, linux-omap@vger.kernel.org,
linux-mmc@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-spi@vger.kernel.org, linux-media@vger.kernel.org,
alsa-devel@alsa-project.org, Ulf Hansson <ulf.hansson@linaro.org>,
Jarkko Nikula <jarkko.nikula@bitmer.com>
Subject: [PATCH 06/13] mmc: omap: Support for deferred probing when requesting DMA channels
Date: Tue, 26 May 2015 16:26:01 +0300 [thread overview]
Message-ID: <1432646768-12532-7-git-send-email-peter.ujfalusi@ti.com> (raw)
In-Reply-To: <1432646768-12532-1-git-send-email-peter.ujfalusi@ti.com>
Switch to use ma_request_slave_channel_compat_reason() to request the DMA
channels. Only fall back to pio mode if the error code returned is not
-EPROBE_DEFER, otherwise return from the probe with the -EPROBE_DEFER.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
CC: Ulf Hansson <ulf.hansson@linaro.org>
CC: Jarkko Nikula <jarkko.nikula@bitmer.com>
---
drivers/mmc/host/omap.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 68dd6c79c378..29238d0fbc24 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1390,20 +1390,32 @@ static int mmc_omap_probe(struct platform_device *pdev)
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
if (res)
sig = res->start;
- host->dma_tx = dma_request_slave_channel_compat(mask,
+ host->dma_tx = dma_request_slave_channel_compat_reason(mask,
omap_dma_filter_fn, &sig, &pdev->dev, "tx");
- if (!host->dma_tx)
+ if (IS_ERR(host->dma_tx)) {
+ ret = PTR_ERR(host->dma_tx);
+ if (ret == -EPROBE_DEFER)
+ goto err_free_dma;
+
+ host->dma_tx = NULL;
dev_warn(host->dev, "unable to obtain TX DMA engine channel %u\n",
sig);
+ }
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
if (res)
sig = res->start;
- host->dma_rx = dma_request_slave_channel_compat(mask,
+ host->dma_rx = dma_request_slave_channel_compat_reason(mask,
omap_dma_filter_fn, &sig, &pdev->dev, "rx");
- if (!host->dma_rx)
+ if (IS_ERR(host->dma_rx)) {
+ ret = PTR_ERR(host->dma_rx);
+ if (ret == -EPROBE_DEFER)
+ goto err_free_dma;
+
+ host->dma_rx = NULL;
dev_warn(host->dev, "unable to obtain RX DMA engine channel %u\n",
sig);
+ }
ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
if (ret)
--
2.3.5
next prev parent reply other threads:[~2015-05-26 13:26 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-26 13:25 [PATCH 00/13] dmaengine + omap drivers: support fro deferred probing Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-26 13:25 ` [PATCH 01/13] dmaengine: of_dma: Correct return code for of_dma_request_slave_channel in case !CONFIG_OF Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-26 13:25 ` [PATCH 02/13] dmaengine: Introduce dma_request_slave_channel_compat_reason() Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-29 9:33 ` Vinod Koul
2015-05-29 9:42 ` Geert Uytterhoeven
2015-05-29 9:42 ` Geert Uytterhoeven
2015-05-29 10:18 ` Vinod Koul
2015-05-29 14:32 ` Peter Ujfalusi
2015-05-29 14:32 ` Peter Ujfalusi
2015-06-02 12:55 ` Vinod Koul
2015-06-04 15:58 ` Peter Ujfalusi
2015-06-04 15:58 ` Peter Ujfalusi
2015-06-12 12:58 ` Vinod Koul
2015-06-22 11:31 ` Peter Ujfalusi
2015-06-22 11:31 ` Peter Ujfalusi
2015-06-22 11:31 ` Peter Ujfalusi
2015-06-24 16:24 ` Vinod Koul
2015-06-25 11:15 ` Arnd Bergmann
2015-11-18 14:21 ` Peter Ujfalusi
2015-11-18 14:21 ` Peter Ujfalusi
2015-11-18 14:21 ` Peter Ujfalusi
2015-11-18 14:29 ` Arnd Bergmann
2015-11-18 14:41 ` Peter Ujfalusi
2015-11-18 14:41 ` Peter Ujfalusi
2015-11-18 14:41 ` Peter Ujfalusi
2015-11-18 15:07 ` Arnd Bergmann
2015-11-18 15:43 ` Andy Shevchenko
2015-11-18 15:43 ` Andy Shevchenko
[not found] ` <CAHp75VeZFXp9i_zz7CBkVQVPGQxuzYk9AbWbbbn33r8YX3LCdw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-18 15:51 ` Arnd Bergmann
2015-11-18 15:51 ` Arnd Bergmann
2015-11-18 16:00 ` Andy Shevchenko
2015-11-18 16:06 ` Vinod Koul
2015-11-18 16:06 ` Vinod Koul
2015-11-19 10:34 ` Peter Ujfalusi
2015-11-19 10:34 ` Peter Ujfalusi
2015-11-19 11:25 ` Arnd Bergmann
2015-11-20 10:25 ` Peter Ujfalusi
2015-11-20 10:25 ` Peter Ujfalusi
2015-11-20 10:58 ` Arnd Bergmann
2015-11-20 10:58 ` Arnd Bergmann
2015-11-20 12:24 ` Andy Shevchenko
2015-11-20 12:24 ` Andy Shevchenko
[not found] ` <CAHp75VdoHqPMNGFfz4mPhX+Lw+vxgiyqFS8j5+kQ9Z9CHt=OTA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-20 12:30 ` Peter Ujfalusi
2015-11-20 12:30 ` Peter Ujfalusi
[not found] ` <564F1253.4000800-l0cyMroinI0@public.gmane.org>
2015-11-20 14:08 ` Andy Shevchenko
2015-11-20 14:08 ` Andy Shevchenko
2015-11-20 12:52 ` Peter Ujfalusi
2015-11-20 12:52 ` Peter Ujfalusi
2015-11-20 12:52 ` Peter Ujfalusi
[not found] ` <564F1773.9030006-l0cyMroinI0@public.gmane.org>
2015-11-20 13:48 ` Arnd Bergmann
2015-11-20 13:48 ` Arnd Bergmann
2015-11-18 15:46 ` Andy Shevchenko
2015-11-19 10:36 ` Peter Ujfalusi
2015-11-19 10:36 ` Peter Ujfalusi
2015-05-26 13:25 ` [PATCH 04/13] mmc: omap_hsmmc: No need to check DMA channel validity at module remove Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-28 7:20 ` Ulf Hansson
2015-05-26 13:26 ` [PATCH 05/13] mmc: omap_hsmmc: Support for deferred probing when requesting DMA channels Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
[not found] ` <1432646768-12532-6-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org>
2015-05-28 7:23 ` Ulf Hansson
2015-05-28 7:23 ` Ulf Hansson
2015-05-26 13:26 ` Peter Ujfalusi [this message]
2015-05-26 13:26 ` [PATCH 06/13] mmc: omap: " Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 07/13] mmc: davinci_mmc: " Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-28 7:31 ` Ulf Hansson
2015-05-26 13:26 ` [PATCH 08/13] crypto: omap-aes - " Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 10/13] crypto: omap-sham - Support for deferred probing when requesting DMA channel Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 11/13] spi: omap2-mcspi: Support for deferred probing when requesting DMA channels Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 15:27 ` Mark Brown
2015-05-27 11:15 ` Peter Ujfalusi
2015-05-27 11:15 ` Peter Ujfalusi
[not found] ` <5565A740.2020707-l0cyMroinI0@public.gmane.org>
2015-05-27 17:48 ` Mark Brown
2015-05-27 17:48 ` Mark Brown
2015-05-27 17:48 ` Mark Brown
2015-05-26 13:26 ` [PATCH 12/13] [media] omap3isp: Support for deferred probing when requesting DMA channel Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-11-09 19:50 ` Laurent Pinchart
2015-11-10 7:56 ` Peter Ujfalusi
2015-11-10 7:56 ` Peter Ujfalusi
2015-11-10 7:56 ` Peter Ujfalusi
[not found] ` <1432646768-12532-1-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org>
2015-05-26 13:25 ` [PATCH 03/13] serial: 8250_dma: Support for deferred probing when requesting DMA channels Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
2015-05-26 13:25 ` Peter Ujfalusi
[not found] ` <1432646768-12532-4-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org>
2015-05-26 14:44 ` Greg Kroah-Hartman
2015-05-26 14:44 ` Greg Kroah-Hartman
2015-05-27 10:41 ` Peter Ujfalusi
2015-05-27 10:41 ` Peter Ujfalusi
2015-05-27 10:41 ` Peter Ujfalusi
2015-05-27 10:41 ` Peter Ujfalusi
2015-05-26 15:08 ` Tony Lindgren
2015-05-26 15:08 ` Tony Lindgren
2015-05-27 10:58 ` Peter Ujfalusi
2015-05-27 10:58 ` Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 09/13] crypto: omap-des - " Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 13/13] ASoC: omap-pcm: Switch to use dma_request_slave_channel_compat_reason() Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-26 13:26 ` Peter Ujfalusi
2015-05-27 17:48 ` Mark Brown
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