Subject: [PATCH 1/5] of/device: Centralize checking of 'status' properties

From: Deepak Saxena <[email-masked]>
Date: Wed, 8 Dec 2010 11:29:13 -0800

Don't call any of_platform_driver's probe() function if the device node is
not accessible (as denoted in the status property).

Signed-off-by: Hollis Blanchard <[email-masked]>
Signed-off-by: Deepak Saxena <[email-masked]>
---
 arch/powerpc/platforms/83xx/suspend.c |    3 ---
 drivers/mmc/host/sdhci-of-core.c      |    3 ---
 drivers/net/gianfar.c                 |    2 +-
 drivers/net/ibm_newemac/core.c        |    2 +-
 drivers/of/platform.c                 |    7 +++++--
 5 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/arch/powerpc/platforms/83xx/suspend.c b/arch/powerpc/platforms/83xx/suspend.c
index 75ae77f..a5a54aa 100644
--- a/arch/powerpc/platforms/83xx/suspend.c
+++ b/arch/powerpc/platforms/83xx/suspend.c
@@ -326,9 +326,6 @@ static int pmc_probe(struct platform_device *ofdev,
 	struct pmc_type *type = match->data;
 	int ret = 0;
 
-	if (!of_device_is_available(np))
-		return -ENODEV;
-
 	has_deep_sleep = type->has_deep_sleep;
 	immrbase = get_immrbase();
 	pmc_dev = ofdev;
diff --git a/drivers/mmc/host/sdhci-of-core.c b/drivers/mmc/host/sdhci-of-core.c
index c51b711..51218d4 100644
--- a/drivers/mmc/host/sdhci-of-core.c
+++ b/drivers/mmc/host/sdhci-of-core.c
@@ -126,9 +126,6 @@ static int __devinit sdhci_of_probe(struct platform_device *ofdev,
 	int size;
 	int ret;
 
-	if (!of_device_is_available(np))
-		return -ENODEV;
-
 	host = sdhci_alloc_host(&ofdev->dev, sizeof(*of_host));
 	if (IS_ERR(host))
 		return -ENOMEM;
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index d1bec62..9918914 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -620,7 +620,7 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
 	unsigned int num_tx_qs, num_rx_qs;
 	u32 *tx_queues, *rx_queues;
 
-	if (!np || !of_device_is_available(np))
+	if (!np)
 		return -ENODEV;
 
 	/* parse the num of tx and rx queues */
diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index 06bb9b7..290fff2 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -2732,7 +2732,7 @@ static int __devinit emac_probe(struct platform_device *ofdev,
 	 * property here for now, but new flat device trees should set a
 	 * status property to "disabled" instead.
 	 */
-	if (of_get_property(np, "unused", NULL) || !of_device_is_available(np))
+	if (of_get_property(np, "unused", NULL))
 		return -ENODEV;
 
 	/* Find ourselves in the bootlist if we are there */
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 5b4a07f..14370a0 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -56,7 +56,10 @@ static int platform_driver_probe_shim(struct platform_device *pdev)
 	 * come up empty.  Return -EINVAL in this case so other drivers get
 	 * the chance to bind. */
 	match = of_match_device(pdev->dev.driver->of_match_table, &pdev->dev);
-	return match ? ofpdrv->probe(pdev, match) : -EINVAL;
+	if (match && of_device_is_available(pdev->dev.of_node))
+		return ofpdrv->probe(pdev, match);
+
+	return -EINVAL;
 }
 
 static void platform_driver_shutdown_shim(struct platform_device *pdev)
@@ -142,7 +145,7 @@ static int of_platform_device_probe(struct device *dev)
 	of_dev_get(of_dev);
 
 	match = of_match_device(drv->driver.of_match_table, dev);
-	if (match)
+	if (match && of_device_is_available(dev->of_node))
 		error = drv->probe(of_dev, match);
 	if (error)
 		of_dev_put(of_dev);
-- 
1.6.3.3