pcmcia: use dev_pm_ops for class pcmcia_socket_class

Instead of requiring PCMCIA socket drivers to call various functions during their (bus) resume and suspend functions, register an own dev_pm_ops for this class. This fixes several suspend/resume bugs seen on db1xxx-ss, and probably on some other socket drivers, too. With regard to the asymmetry with only _noirq suspend, but split up resume, please see bug 14334 and commit 9905d1b . Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
mariux64 · Mar 24, 2010 · d7646f7 · d7646f7
1 parent e7176a3
commit d7646f7
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Showing 19 changed files with 66 additions and 288 deletions.
diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
@@ -361,7 +361,6 @@ static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
 	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
 	struct at91_cf_data	*board = cf->board;
 
-	pcmcia_socket_dev_suspend(&pdev->dev);
 	if (device_may_wakeup(&pdev->dev)) {
 		enable_irq_wake(board->det_pin);
 		if (board->irq_pin)
@@ -381,7 +380,6 @@ static int at91_cf_resume(struct platform_device *pdev)
 			disable_irq_wake(board->irq_pin);
 	}
 
-	pcmcia_socket_dev_resume(&pdev->dev);
 	return 0;
 }
 

diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c
@@ -510,26 +510,13 @@ static int au1x00_drv_pcmcia_probe(struct platform_device *dev)
 	return ret;
 }
 
-static int au1x00_drv_pcmcia_suspend(struct platform_device *dev,
-				     pm_message_t state)
-{
-	return pcmcia_socket_dev_suspend(&dev->dev);
-}
-
-static int au1x00_drv_pcmcia_resume(struct platform_device *dev)
-{
-	return pcmcia_socket_dev_resume(&dev->dev);
-}
-
 static struct platform_driver au1x00_pcmcia_driver = {
 	.driver = {
 		.name		= "au1x00-pcmcia",
 		.owner		= THIS_MODULE,
 	},
 	.probe		= au1x00_drv_pcmcia_probe,
 	.remove		= au1x00_drv_pcmcia_remove,
-	.suspend 	= au1x00_drv_pcmcia_suspend,
-	.resume 	= au1x00_drv_pcmcia_resume,
 };
 
 

diff --git a/drivers/pcmcia/bfin_cf_pcmcia.c b/drivers/pcmcia/bfin_cf_pcmcia.c
@@ -300,25 +300,13 @@ static int __devexit bfin_cf_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int bfin_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
-{
-	return pcmcia_socket_dev_suspend(&pdev->dev);
-}
-
-static int bfin_cf_resume(struct platform_device *pdev)
-{
-	return pcmcia_socket_dev_resume(&pdev->dev);
-}
-
 static struct platform_driver bfin_cf_driver = {
 	.driver = {
 		   .name = (char *)driver_name,
 		   .owner = THIS_MODULE,
 		   },
 	.probe = bfin_cf_probe,
 	.remove = __devexit_p(bfin_cf_remove),
-	.suspend = bfin_cf_suspend,
-	.resume = bfin_cf_resume,
 };
 
 static int __init bfin_cf_init(void)

diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
@@ -76,65 +76,6 @@ DECLARE_RWSEM(pcmcia_socket_list_rwsem);
 EXPORT_SYMBOL(pcmcia_socket_list_rwsem);
 
 
-/*
- * Low-level PCMCIA socket drivers need to register with the PCCard
- * core using pcmcia_register_socket.
- *
- * socket drivers are expected to use the following callbacks in their
- * .drv struct:
- *  - pcmcia_socket_dev_suspend
- *  - pcmcia_socket_dev_resume
- * These functions check for the appropriate struct pcmcia_soket arrays,
- * and pass them to the low-level functions pcmcia_{suspend,resume}_socket
- */
-static int socket_early_resume(struct pcmcia_socket *skt);
-static int socket_late_resume(struct pcmcia_socket *skt);
-static int socket_resume(struct pcmcia_socket *skt);
-static int socket_suspend(struct pcmcia_socket *skt);
-
-static void pcmcia_socket_dev_run(struct device *dev,
-				  int (*cb)(struct pcmcia_socket *))
-{
-	struct pcmcia_socket *socket;
-
-	down_read(&pcmcia_socket_list_rwsem);
-	list_for_each_entry(socket, &pcmcia_socket_list, socket_list) {
-		if (socket->dev.parent != dev)
-			continue;
-		mutex_lock(&socket->skt_mutex);
-		cb(socket);
-		mutex_unlock(&socket->skt_mutex);
-	}
-	up_read(&pcmcia_socket_list_rwsem);
-}
-
-int pcmcia_socket_dev_suspend(struct device *dev)
-{
-	pcmcia_socket_dev_run(dev, socket_suspend);
-	return 0;
-}
-EXPORT_SYMBOL(pcmcia_socket_dev_suspend);
-
-void pcmcia_socket_dev_early_resume(struct device *dev)
-{
-	pcmcia_socket_dev_run(dev, socket_early_resume);
-}
-EXPORT_SYMBOL(pcmcia_socket_dev_early_resume);
-
-void pcmcia_socket_dev_late_resume(struct device *dev)
-{
-	pcmcia_socket_dev_run(dev, socket_late_resume);
-}
-EXPORT_SYMBOL(pcmcia_socket_dev_late_resume);
-
-int pcmcia_socket_dev_resume(struct device *dev)
-{
-	pcmcia_socket_dev_run(dev, socket_resume);
-	return 0;
-}
-EXPORT_SYMBOL(pcmcia_socket_dev_resume);
-
-
 struct pcmcia_socket *pcmcia_get_socket(struct pcmcia_socket *skt)
 {
 	struct device *dev = get_device(&skt->dev);
@@ -578,12 +519,18 @@ static int socket_early_resume(struct pcmcia_socket *skt)
 
 static int socket_late_resume(struct pcmcia_socket *skt)
 {
+	int ret;
+
 	mutex_lock(&skt->ops_mutex);
 	skt->state &= ~SOCKET_SUSPEND;
 	mutex_unlock(&skt->ops_mutex);
 
-	if (!(skt->state & SOCKET_PRESENT))
-		return socket_insert(skt);
+	if (!(skt->state & SOCKET_PRESENT)) {
+		ret = socket_insert(skt);
+		if (ret == -ENODEV)
+			ret = 0;
+		return ret;
+	}
 
 	if (skt->resume_status) {
 		socket_shutdown(skt);
@@ -919,11 +866,66 @@ static void pcmcia_release_socket_class(struct class *data)
 }
 
 
+#ifdef CONFIG_PM
+
+static int __pcmcia_pm_op(struct device *dev,
+			  int (*callback) (struct pcmcia_socket *skt))
+{
+	struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
+	int ret;
+
+	mutex_lock(&s->skt_mutex);
+	ret = callback(s);
+	mutex_unlock(&s->skt_mutex);
+
+	return ret;
+}
+
+static int pcmcia_socket_dev_suspend_noirq(struct device *dev)
+{
+	return __pcmcia_pm_op(dev, socket_suspend);
+}
+
+static int pcmcia_socket_dev_resume_noirq(struct device *dev)
+{
+	return __pcmcia_pm_op(dev, socket_early_resume);
+}
+
+static int pcmcia_socket_dev_resume(struct device *dev)
+{
+	return __pcmcia_pm_op(dev, socket_late_resume);
+}
+
+static const struct dev_pm_ops pcmcia_socket_pm_ops = {
+	/* dev_resume may be called with IRQs enabled */
+	SET_SYSTEM_SLEEP_PM_OPS(NULL,
+				pcmcia_socket_dev_resume)
+
+	/* late suspend must be called with IRQs disabled */
+	.suspend_noirq = pcmcia_socket_dev_suspend_noirq,
+	.freeze_noirq = pcmcia_socket_dev_suspend_noirq,
+	.poweroff_noirq = pcmcia_socket_dev_suspend_noirq,
+
+	/* early resume must be called with IRQs disabled */
+	.resume_noirq = pcmcia_socket_dev_resume_noirq,
+	.thaw_noirq = pcmcia_socket_dev_resume_noirq,
+	.restore_noirq = pcmcia_socket_dev_resume_noirq,
+};
+
+#define PCMCIA_SOCKET_CLASS_PM_OPS (&pcmcia_socket_pm_ops)
+
+#else /* CONFIG_PM */
+
+#define PCMCIA_SOCKET_CLASS_PM_OPS NULL
+
+#endif /* CONFIG_PM */
+
 struct class pcmcia_socket_class = {
 	.name = "pcmcia_socket",
 	.dev_uevent = pcmcia_socket_uevent,
 	.dev_release = pcmcia_release_socket,
 	.class_release = pcmcia_release_socket_class,
+	.pm = PCMCIA_SOCKET_CLASS_PM_OPS,
 };
 EXPORT_SYMBOL(pcmcia_socket_class);
 

diff --git a/drivers/pcmcia/db1xxx_ss.c b/drivers/pcmcia/db1xxx_ss.c
@@ -558,37 +558,10 @@ static int __devexit db1x_pcmcia_socket_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int db1x_pcmcia_suspend(struct device *dev)
-{
-	return pcmcia_socket_dev_suspend(dev);
-}
-
-static int db1x_pcmcia_resume(struct device *dev)
-{
-	return pcmcia_socket_dev_resume(dev);
-}
-
-static struct dev_pm_ops db1x_pcmcia_pmops = {
-	.resume		= db1x_pcmcia_resume,
-	.suspend	= db1x_pcmcia_suspend,
-	.thaw		= db1x_pcmcia_resume,
-	.freeze		= db1x_pcmcia_suspend,
-};
-
-#define DB1XXX_SS_PMOPS &db1x_pcmcia_pmops
-
-#else
-
-#define DB1XXX_SS_PMOPS NULL
-
-#endif
-
 static struct platform_driver db1x_pcmcia_socket_driver = {
 	.driver	= {
 		.name	= "db1xxx_pcmcia",
 		.owner	= THIS_MODULE,
-		.pm	= DB1XXX_SS_PMOPS
 	},
 	.probe		= db1x_pcmcia_socket_probe,
 	.remove		= __devexit_p(db1x_pcmcia_socket_remove),

diff --git a/drivers/pcmcia/i82092.c b/drivers/pcmcia/i82092.c
@@ -39,27 +39,11 @@ static struct pci_device_id i82092aa_pci_ids[] = {
 };
 MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids);
 
-#ifdef CONFIG_PM
-static int i82092aa_socket_suspend (struct pci_dev *dev, pm_message_t state)
-{
-	return pcmcia_socket_dev_suspend(&dev->dev);
-}
-
-static int i82092aa_socket_resume (struct pci_dev *dev)
-{
-	return pcmcia_socket_dev_resume(&dev->dev);
-}
-#endif
-
 static struct pci_driver i82092aa_pci_driver = {
 	.name           = "i82092aa",
 	.id_table       = i82092aa_pci_ids,
 	.probe          = i82092aa_pci_probe,
 	.remove         = __devexit_p(i82092aa_pci_remove),
-#ifdef CONFIG_PM
-	.suspend        = i82092aa_socket_suspend,
-	.resume         = i82092aa_socket_resume,
-#endif
 };
 
 

diff --git a/drivers/pcmcia/i82365.c b/drivers/pcmcia/i82365.c
@@ -1223,16 +1223,7 @@ static int pcic_init(struct pcmcia_socket *s)
 	return 0;
 }
 
-static int i82365_drv_pcmcia_suspend(struct platform_device *dev,
-				     pm_message_t state)
-{
-	return pcmcia_socket_dev_suspend(&dev->dev);
-}
 
-static int i82365_drv_pcmcia_resume(struct platform_device *dev)
-{
-	return pcmcia_socket_dev_resume(&dev->dev);
-}
 static struct pccard_operations pcic_operations = {
 	.init			= pcic_init,
 	.get_status		= pcic_get_status,
@@ -1248,8 +1239,6 @@ static struct platform_driver i82365_driver = {
 		.name = "i82365",
 		.owner		= THIS_MODULE,
 	},
-	.suspend 	= i82365_drv_pcmcia_suspend,
-	.resume 	= i82365_drv_pcmcia_resume,
 };
 
 static struct platform_device *i82365_device;

diff --git a/drivers/pcmcia/m32r_cfc.c b/drivers/pcmcia/m32r_cfc.c
@@ -685,25 +685,14 @@ static struct pccard_operations pcc_operations = {
 	.set_mem_map		= pcc_set_mem_map,
 };
 
-static int cfc_drv_pcmcia_suspend(struct platform_device *dev,
-				     pm_message_t state)
-{
-	return pcmcia_socket_dev_suspend(&dev->dev);
-}
 
-static int cfc_drv_pcmcia_resume(struct platform_device *dev)
-{
-	return pcmcia_socket_dev_resume(&dev->dev);
-}
 /*====================================================================*/
 
 static struct platform_driver pcc_driver = {
 	.driver = {
 		.name		= "cfc",
 		.owner		= THIS_MODULE,
 	},
-	.suspend 	= cfc_drv_pcmcia_suspend,
-	.resume 	= cfc_drv_pcmcia_resume,
 };
 
 static struct platform_device pcc_device = {

diff --git a/drivers/pcmcia/m32r_pcc.c b/drivers/pcmcia/m32r_pcc.c
@@ -663,25 +663,13 @@ static struct pccard_operations pcc_operations = {
 	.set_mem_map		= pcc_set_mem_map,
 };
 
-static int pcc_drv_pcmcia_suspend(struct platform_device *dev,
-				     pm_message_t state)
-{
-	return pcmcia_socket_dev_suspend(&dev->dev);
-}
-
-static int pcc_drv_pcmcia_resume(struct platform_device *dev)
-{
-	return pcmcia_socket_dev_resume(&dev->dev);
-}
 /*====================================================================*/
 
 static struct platform_driver pcc_driver = {
 	.driver = {
 		.name		= "pcc",
 		.owner		= THIS_MODULE,
 	},
-	.suspend 	= pcc_drv_pcmcia_suspend,
-	.resume 	= pcc_drv_pcmcia_resume,
 };
 
 static struct platform_device pcc_device = {

diff --git a/drivers/pcmcia/m8xx_pcmcia.c b/drivers/pcmcia/m8xx_pcmcia.c
@@ -1288,21 +1288,6 @@ static int m8xx_remove(struct of_device *ofdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int m8xx_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	return pcmcia_socket_dev_suspend(&pdev->dev);
-}
-
-static int m8xx_resume(struct platform_device *pdev)
-{
-	return pcmcia_socket_dev_resume(&pdev->dev);
-}
-#else
-#define m8xx_suspend NULL
-#define m8xx_resume NULL
-#endif
-
 static const struct of_device_id m8xx_pcmcia_match[] = {
 	{
 	 .type = "pcmcia",
@@ -1318,8 +1303,6 @@ static struct of_platform_driver m8xx_pcmcia_driver = {
 	.match_table = m8xx_pcmcia_match,
 	.probe = m8xx_probe,
 	.remove = m8xx_remove,
-	.suspend = m8xx_suspend,
-	.resume = m8xx_resume,
 };
 
 static int __init m8xx_init(void)