linux-kernel - [RFC PATCH 10/11] PCMCIA: handle sysfs, PCI errors

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Message-ID: <20061026021742.GK20473@dominikbrodowski.de>
Date:	Wed, 25 Oct 2006 22:17:42 -0400
From:	Dominik Brodowski <linux@...inikbrodowski.net>
To:	linux-pcmcia@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, jeff@...zik.org
Subject: [RFC PATCH 10/11] PCMCIA: handle sysfs, PCI errors

From: Jeff Garzik <jeff@...zik.org>
Date: Fri, 20 Oct 2006 14:44:23 -0700
Subject: [PATCH] PCMCIA: handle sysfs, PCI errors

Handle sysfs and PCI errors correctly.

Signed-off-by: Jeff Garzik <jeff@...zik.org>
Signed-off-by: Andrew Morton <akpm@...l.org>
Signed-off-by: Dominik Brodowski <linux@...inikbrodowski.net>
---
 drivers/pcmcia/pcmcia_ioctl.c |   11 ++++++++---
 drivers/pcmcia/yenta_socket.c |   16 +++++++++++++---
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c
index 9ad18e6..310ede5 100644
--- a/drivers/pcmcia/pcmcia_ioctl.c
+++ b/drivers/pcmcia/pcmcia_ioctl.c
@@ -128,9 +128,12 @@ static int proc_read_drivers(char *buf, 
 			     int count, int *eof, void *data)
 {
 	char *p = buf;
+	int rc;
 
-	bus_for_each_drv(&pcmcia_bus_type, NULL,
-			 (void *) &p, proc_read_drivers_callback);
+	rc = bus_for_each_drv(&pcmcia_bus_type, NULL,
+			      (void *) &p, proc_read_drivers_callback);
+	if (rc < 0)
+		return rc;
 
 	return (p - buf);
 }
@@ -269,8 +272,10 @@ rescan:
 	 * Prevent this racing with a card insertion.
 	 */
 	mutex_lock(&s->skt_mutex);
-	bus_rescan_devices(&pcmcia_bus_type);
+	ret = bus_rescan_devices(&pcmcia_bus_type);
 	mutex_unlock(&s->skt_mutex);
+	if (ret)
+		goto err_put_module;
 
 	/* check whether the driver indeed matched. I don't care if this
 	 * is racy or not, because it can only happen on cardmgr access
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index 9ced52a..da471bd 100644
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -1197,8 +1197,12 @@ static int __devinit yenta_probe (struct
 	ret = pcmcia_register_socket(&socket->socket);
 	if (ret == 0) {
 		/* Add the yenta register attributes */
-		device_create_file(&dev->dev, &dev_attr_yenta_registers);
-		goto out;
+		ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
+		if (ret == 0)
+			goto out;
+
+		/* error path... */
+		pcmcia_unregister_socket(&socket->socket);
 	}
 
  unmap:
@@ -1248,12 +1252,18 @@ static int yenta_dev_resume (struct pci_
 	struct yenta_socket *socket = pci_get_drvdata(dev);
 
 	if (socket) {
+		int rc;
+
 		pci_set_power_state(dev, 0);
 		/* FIXME: pci_restore_state needs to have a better interface */
 		pci_restore_state(dev);
 		pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
 		pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
-		pci_enable_device(dev);
+
+		rc = pci_enable_device(dev);
+		if (rc)
+			return rc;
+
 		pci_set_master(dev);
 
 		if (socket->type && socket->type->restore_state)
-- 
1.4.3

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