[PATCH] tpm: remove pci dependency

Since the tpm does not have it's own pci id we have been consuming the lpc
bus.  This is not correct and causes problems to support non lpc bus chips.
This patch removes the dependency on pci_dev from tpm.c The subsequent patches
will stop the supported chips from registering as pci drivers.

Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

5 files changed, 91 insertions, 72 deletions

diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 328f2a9..75f949b 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -64,7 +64,7 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
 	if (count == 0)
 		return -ENODATA;
 	if (count > bufsiz) {
-		dev_err(&chip->pci_dev->dev,
+		dev_err(chip->dev,
 			"invalid count value %x %zx \n", count, bufsiz);
 		return -E2BIG;
 	}
@@ -72,7 +72,7 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
 	down(&chip->tpm_mutex);
 
 	if ((rc = chip->vendor->send(chip, (u8 *) buf, count)) < 0) {
-		dev_err(&chip->pci_dev->dev,
+		dev_err(chip->dev,
 			"tpm_transmit: tpm_send: error %zd\n", rc);
 		goto out;
 	}
@@ -86,7 +86,7 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
 		}
 
 		if ((status == chip->vendor->req_canceled)) {
-			dev_err(&chip->pci_dev->dev, "Operation Canceled\n");
+			dev_err(chip->dev, "Operation Canceled\n");
 			rc = -ECANCELED;
 			goto out;
 		}
@@ -97,14 +97,14 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
 
 
 	chip->vendor->cancel(chip);
-	dev_err(&chip->pci_dev->dev, "Operation Timed out\n");
+	dev_err(chip->dev, "Operation Timed out\n");
 	rc = -ETIME;
 	goto out;
 
 out_recv:
 	rc = chip->vendor->recv(chip, (u8 *) buf, bufsiz);
 	if (rc < 0)
-		dev_err(&chip->pci_dev->dev,
+		dev_err(chip->dev,
 			"tpm_transmit: tpm_recv: error %zd\n", rc);
 out:
 	up(&chip->tpm_mutex);
@@ -139,15 +139,14 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr,
 	__be32 index;
 	char *str = buf;
 
-	struct tpm_chip *chip =
-	    pci_get_drvdata(to_pci_dev(dev));
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 	if (chip == NULL)
 		return -ENODEV;
 
 	memcpy(data, cap_pcr, sizeof(cap_pcr));
 	if ((len = tpm_transmit(chip, data, sizeof(data)))
 	    < CAP_PCR_RESULT_SIZE) {
-		dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred "
+		dev_dbg(chip->dev, "A TPM error (%d) occurred "
 				"attempting to determine the number of PCRS\n",
 			be32_to_cpu(*((__be32 *) (data + 6))));
 		return 0;
@@ -161,7 +160,7 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr,
 		memcpy(data + 10, &index, 4);
 		if ((len = tpm_transmit(chip, data, sizeof(data)))
 		    < READ_PCR_RESULT_SIZE){
-			dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred"
+			dev_dbg(chip->dev, "A TPM error (%d) occurred"
 				" attempting to read PCR %d of %d\n",
 				be32_to_cpu(*((__be32 *) (data + 6))), i, num_pcrs);
 			goto out;
@@ -191,8 +190,7 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,
 	int i, rc;
 	char *str = buf;
 
-	struct tpm_chip *chip =
-	    pci_get_drvdata(to_pci_dev(dev));
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 	if (chip == NULL)
 		return -ENODEV;
 
@@ -205,7 +203,7 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,
 
 	if ((len = tpm_transmit(chip, data, READ_PUBEK_RESULT_SIZE)) <
 	    READ_PUBEK_RESULT_SIZE) {
-		dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred "
+		dev_dbg(chip->dev, "A TPM error (%d) occurred "
 				"attempting to read the PUBEK\n",
 			    be32_to_cpu(*((__be32 *) (data + 6))));
 		rc = 0;
@@ -274,8 +272,7 @@ ssize_t tpm_show_caps(struct device *dev, struct device_attribute *attr,
 	ssize_t len;
 	char *str = buf;
 
-	struct tpm_chip *chip =
-	    pci_get_drvdata(to_pci_dev(dev));
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 	if (chip == NULL)
 		return -ENODEV;
 
@@ -339,21 +336,21 @@ int tpm_open(struct inode *inode, struct file *file)
 	}
 
 	if (chip->num_opens) {
-		dev_dbg(&chip->pci_dev->dev,
+		dev_dbg(chip->dev,
 			"Another process owns this TPM\n");
 		rc = -EBUSY;
 		goto err_out;
 	}
 
 	chip->num_opens++;
-	pci_dev_get(chip->pci_dev);
+	get_device(chip->dev);
 
 	spin_unlock(&driver_lock);
 
 	chip->data_buffer = kmalloc(TPM_BUFSIZE * sizeof(u8), GFP_KERNEL);
 	if (chip->data_buffer == NULL) {
 		chip->num_opens--;
-		pci_dev_put(chip->pci_dev);
+		put_device(chip->dev);
 		return -ENOMEM;
 	}
 
@@ -378,7 +375,7 @@ int tpm_release(struct inode *inode, struct file *file)
 	chip->num_opens--;
 	del_singleshot_timer_sync(&chip->user_read_timer);
 	atomic_set(&chip->data_pending, 0);
-	pci_dev_put(chip->pci_dev);
+	put_device(chip->dev);
 	kfree(chip->data_buffer);
 	spin_unlock(&driver_lock);
 	return 0;
@@ -447,12 +444,12 @@ ssize_t tpm_read(struct file * file, char __user * buf,
 
 EXPORT_SYMBOL_GPL(tpm_read);
 
-void __devexit tpm_remove(struct pci_dev *pci_dev)
+void tpm_remove_hardware(struct device *dev)
 {
-	struct tpm_chip *chip = pci_get_drvdata(pci_dev);
+	struct tpm_chip *chip = dev_get_drvdata(dev);
 
 	if (chip == NULL) {
-		dev_err(&pci_dev->dev, "No device data found\n");
+		dev_err(dev, "No device data found\n");
 		return;
 	}
 
@@ -462,22 +459,20 @@ void __devexit tpm_remove(struct pci_dev *pci_dev)
 
 	spin_unlock(&driver_lock);
 
-	pci_set_drvdata(pci_dev, NULL);
+	dev_set_drvdata(dev, NULL);
 	misc_deregister(&chip->vendor->miscdev);
 	kfree(chip->vendor->miscdev.name);
 
-	sysfs_remove_group(&pci_dev->dev.kobj, chip->vendor->attr_group);
-
-	pci_disable_device(pci_dev);
+	sysfs_remove_group(&dev->kobj, chip->vendor->attr_group);
 
 	dev_mask[chip->dev_num / TPM_NUM_MASK_ENTRIES ] &= !(1 << (chip->dev_num % TPM_NUM_MASK_ENTRIES));
 
 	kfree(chip);
 
-	pci_dev_put(pci_dev);
+	put_device(dev);
 }
 
-EXPORT_SYMBOL_GPL(tpm_remove);
+EXPORT_SYMBOL_GPL(tpm_remove_hardware);
 
 static u8 savestate[] = {
 	0, 193,			/* TPM_TAG_RQU_COMMAND */
@@ -524,7 +519,7 @@ EXPORT_SYMBOL_GPL(tpm_pm_resume);
  * upon errant exit from this function specific probe function should call
  * pci_disable_device
  */
-int tpm_register_hardware(struct pci_dev *pci_dev,
+int tpm_register_hardware(struct device *dev,
 			  struct tpm_vendor_specific *entry)
 {
 #define DEVNAME_SIZE 7
@@ -563,7 +558,7 @@ int tpm_register_hardware(struct pci_dev *pci_dev,
 
 dev_num_search_complete:
 	if (chip->dev_num < 0) {
-		dev_err(&pci_dev->dev,
+		dev_err(dev,
 			"No available tpm device numbers\n");
 		kfree(chip);
 		return -ENODEV;
@@ -576,15 +571,15 @@ dev_num_search_complete:
 	scnprintf(devname, DEVNAME_SIZE, "%s%d", "tpm", chip->dev_num);
 	chip->vendor->miscdev.name = devname;
 
-	chip->vendor->miscdev.dev = &(pci_dev->dev);
-	chip->pci_dev = pci_dev_get(pci_dev);
+	chip->vendor->miscdev.dev = dev;
+	chip->dev = get_device(dev);
 
 	if (misc_register(&chip->vendor->miscdev)) {
-		dev_err(&chip->pci_dev->dev,
+		dev_err(chip->dev,
 			"unable to misc_register %s, minor %d\n",
 			chip->vendor->miscdev.name,
 			chip->vendor->miscdev.minor);
-		pci_dev_put(pci_dev);
+		put_device(dev);
 		kfree(chip);
 		dev_mask[i] &= !(1 << j);
 		return -ENODEV;
@@ -592,13 +587,13 @@ dev_num_search_complete:
 
 	spin_lock(&driver_lock);
 
-	pci_set_drvdata(pci_dev, chip);
+	dev_set_drvdata(dev, chip);
 
 	list_add(&chip->list, &tpm_chip_list);
 
 	spin_unlock(&driver_lock);
 
-	sysfs_create_group(&pci_dev->dev.kobj, chip->vendor->attr_group);
+	sysfs_create_group(&dev->kobj, chip->vendor->attr_group);
 
 	return 0;
 }
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index ba70bf5..27bc8cc 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -61,7 +61,7 @@ struct tpm_vendor_specific {
 };
 
 struct tpm_chip {
-	struct pci_dev *pci_dev;	/* PCI device stuff */
+	struct device *dev;	/* Device stuff */
 
 	int dev_num;		/* /dev/tpm# */
 	int num_opens;		/* only one allowed */
@@ -92,13 +92,13 @@ static inline void tpm_write_index(int base, int index, int value)
 	outb(value & 0xFF, base+1);
 }
 
-extern int tpm_register_hardware(struct pci_dev *,
+extern int tpm_register_hardware(struct device *,
 				 struct tpm_vendor_specific *);
 extern int tpm_open(struct inode *, struct file *);
 extern int tpm_release(struct inode *, struct file *);
 extern ssize_t tpm_write(struct file *, const char __user *, size_t,
 			 loff_t *);
 extern ssize_t tpm_read(struct file *, char __user *, size_t, loff_t *);
-extern void __devexit tpm_remove(struct pci_dev *);
+extern void tpm_remove_hardware(struct device *);
 extern int tpm_pm_suspend(struct pci_dev *, pm_message_t);
 extern int tpm_pm_resume(struct pci_dev *);
diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c
index 96ab900..44b08ba 100644
--- a/drivers/char/tpm/tpm_atmel.c
+++ b/drivers/char/tpm/tpm_atmel.c
@@ -54,7 +54,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	for (i = 0; i < 6; i++) {
 		status = inb(chip->vendor->base + 1);
 		if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"error reading header\n");
 			return -EIO;
 		}
@@ -66,12 +66,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	size = be32_to_cpu(*native_size);
 
 	if (count < size) {
-		dev_err(&chip->pci_dev->dev,
+		dev_err(chip->dev,
 			"Recv size(%d) less than available space\n", size);
 		for (; i < size; i++) {	/* clear the waiting data anyway */
 			status = inb(chip->vendor->base + 1);
 			if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-				dev_err(&chip->pci_dev->dev,
+				dev_err(chip->dev,
 					"error reading data\n");
 				return -EIO;
 			}
@@ -83,7 +83,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	for (; i < size; i++) {
 		status = inb(chip->vendor->base + 1);
 		if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"error reading data\n");
 			return -EIO;
 		}
@@ -93,7 +93,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	/* make sure data available is gone */
 	status = inb(chip->vendor->base + 1);
 	if (status & ATML_STATUS_DATA_AVAIL) {
-		dev_err(&chip->pci_dev->dev, "data available is stuck\n");
+		dev_err(chip->dev, "data available is stuck\n");
 		return -EIO;
 	}
 
@@ -104,9 +104,9 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 * buf, size_t count)
 {
 	int i;
 
-	dev_dbg(&chip->pci_dev->dev, "tpm_atml_send: ");
+	dev_dbg(chip->dev, "tpm_atml_send:\n");
 	for (i = 0; i < count; i++) {
-		dev_dbg(&chip->pci_dev->dev, "0x%x(%d) ", buf[i], buf[i]);
+		dev_dbg(chip->dev, "%d 0x%x(%d)\n",  i, buf[i], buf[i]);
 		outb(buf[i], chip->vendor->base);
 	}
 
@@ -193,7 +193,7 @@ static int __devinit tpm_atml_init(struct pci_dev *pci_dev,
 		goto out_err;
 	}
 
-	if ((rc = tpm_register_hardware(pci_dev, &tpm_atmel)) < 0)
+	if ((rc = tpm_register_hardware(&pci_dev->dev, &tpm_atmel)) < 0)
 		goto out_err;
 
 	dev_info(&pci_dev->dev,
@@ -206,6 +206,14 @@ out_err:
 	return rc;
 }
 
+static void __devexit tpm_atml_remove(struct pci_dev *pci_dev)
+{
+	struct tpm_chip *chip = pci_get_drvdata(pci_dev);
+
+	if ( chip )
+		tpm_remove_hardware(chip->dev);
+}
+
 static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
@@ -226,7 +234,7 @@ static struct pci_driver atmel_pci_driver = {
 	.name = "tpm_atmel",
 	.id_table = tpm_pci_tbl,
 	.probe = tpm_atml_init,
-	.remove = __devexit_p(tpm_remove),
+	.remove = __devexit_p(tpm_atml_remove),
 	.suspend = tpm_pm_suspend,
 	.resume = tpm_pm_resume,
 };
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index 5b2ed53..5c3aeaf 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -143,10 +143,10 @@ static int wait(struct tpm_chip *chip, int wait_for_bit)
 	}
 	if (i == TPM_MAX_TRIES) {	/* timeout occurs */
 		if (wait_for_bit == STAT_XFE)
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"Timeout in wait(STAT_XFE)\n");
 		if (wait_for_bit == STAT_RDA)
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"Timeout in wait(STAT_RDA)\n");
 		return -EIO;
 	}
@@ -170,7 +170,7 @@ static void wait_and_send(struct tpm_chip *chip, u8 sendbyte)
 static void tpm_wtx(struct tpm_chip *chip)
 {
 	number_of_wtx++;
-	dev_info(&chip->pci_dev->dev, "Granting WTX (%02d / %02d)\n",
+	dev_info(chip->dev, "Granting WTX (%02d / %02d)\n",
 		 number_of_wtx, TPM_MAX_WTX_PACKAGES);
 	wait_and_send(chip, TPM_VL_VER);
 	wait_and_send(chip, TPM_CTRL_WTX);
@@ -181,7 +181,7 @@ static void tpm_wtx(struct tpm_chip *chip)
 
 static void tpm_wtx_abort(struct tpm_chip *chip)
 {
-	dev_info(&chip->pci_dev->dev, "Aborting WTX\n");
+	dev_info(chip->dev, "Aborting WTX\n");
 	wait_and_send(chip, TPM_VL_VER);
 	wait_and_send(chip, TPM_CTRL_WTX_ABORT);
 	wait_and_send(chip, 0x00);
@@ -206,7 +206,7 @@ recv_begin:
 	}
 
 	if (buf[0] != TPM_VL_VER) {
-		dev_err(&chip->pci_dev->dev,
+		dev_err(chip->dev,
 			"Wrong transport protocol implementation!\n");
 		return -EIO;
 	}
@@ -221,7 +221,7 @@ recv_begin:
 		}
 
 		if ((size == 0x6D00) && (buf[1] == 0x80)) {
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"Error handling on vendor layer!\n");
 			return -EIO;
 		}
@@ -234,7 +234,7 @@ recv_begin:
 	}
 
 	if (buf[1] == TPM_CTRL_WTX) {
-		dev_info(&chip->pci_dev->dev, "WTX-package received\n");
+		dev_info(chip->dev, "WTX-package received\n");
 		if (number_of_wtx < TPM_MAX_WTX_PACKAGES) {
 			tpm_wtx(chip);
 			goto recv_begin;
@@ -245,14 +245,14 @@ recv_begin:
 	}
 
 	if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) {
-		dev_info(&chip->pci_dev->dev, "WTX-abort acknowledged\n");
+		dev_info(chip->dev, "WTX-abort acknowledged\n");
 		return size;
 	}
 
 	if (buf[1] == TPM_CTRL_ERROR) {
-		dev_err(&chip->pci_dev->dev, "ERROR-package received:\n");
+		dev_err(chip->dev, "ERROR-package received:\n");
 		if (buf[4] == TPM_INF_NAK)
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"-> Negative acknowledgement"
 				" - retransmit command!\n");
 		return -EIO;
@@ -271,7 +271,7 @@ static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)
 
 	ret = empty_fifo(chip, 1);
 	if (ret) {
-		dev_err(&chip->pci_dev->dev, "Timeout while clearing FIFO\n");
+		dev_err(chip->dev, "Timeout while clearing FIFO\n");
 		return -EIO;
 	}
 
@@ -494,7 +494,7 @@ static int __devinit tpm_inf_probe(struct pci_dev *pci_dev,
 			 vendorid[0], vendorid[1],
 			 productid[0], productid[1], chipname);
 
-		rc = tpm_register_hardware(pci_dev, &tpm_inf);
+		rc = tpm_register_hardware(&pci_dev->dev, &tpm_inf);
 		if (rc < 0)
 			goto error;
 		return 0;
@@ -509,6 +509,14 @@ error2:
 	}
 }
 
+static __devexit void tpm_inf_remove(struct pci_dev* pci_dev)
+{
+	struct tpm_chip* chip = pci_get_drvdata(pci_dev);
+
+	if( chip )
+		tpm_remove_hardware(chip->dev);
+}
+
 static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
@@ -527,7 +535,7 @@ static struct pci_driver inf_pci_driver = {
 	.name = "tpm_inf",
 	.id_table = tpm_pci_tbl,
 	.probe = tpm_inf_probe,
-	.remove = __devexit_p(tpm_remove),
+	.remove = __devexit_p(tpm_inf_remove),
 	.suspend = tpm_pm_suspend,
 	.resume = tpm_pm_resume,
 };
diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index bf3e774..10202d0 100644
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -111,7 +111,7 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
 	}
 	while (time_before(jiffies, stop));
 
-	dev_info(&chip->pci_dev->dev, "wait for ready failed\n");
+	dev_info(chip->dev, "wait for ready failed\n");
 	return -EBUSY;
 }
 
@@ -127,12 +127,12 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 		return -EIO;
 
 	if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) {
-		dev_err(&chip->pci_dev->dev, "F0 timeout\n");
+		dev_err(chip->dev, "F0 timeout\n");
 		return -EIO;
 	}
 	if ((data =
 	     inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_NORMAL) {
-		dev_err(&chip->pci_dev->dev, "not in normal mode (0x%x)\n",
+		dev_err(chip->dev, "not in normal mode (0x%x)\n",
 			data);
 		return -EIO;
 	}
@@ -141,7 +141,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 	for (p = buffer; p < &buffer[count]; p++) {
 		if (wait_for_stat
 		    (chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) {
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"OBF timeout (while reading data)\n");
 			return -EIO;
 		}
@@ -152,11 +152,11 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
 
 	if ((data & NSC_STATUS_F0) == 0 &&
 	(wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) {
-		dev_err(&chip->pci_dev->dev, "F0 not set\n");
+		dev_err(chip->dev, "F0 not set\n");
 		return -EIO;
 	}
 	if ((data = inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_EOC) {
-		dev_err(&chip->pci_dev->dev,
+		dev_err(chip->dev,
 			"expected end of command(0x%x)\n", data);
 		return -EIO;
 	}
@@ -187,19 +187,19 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
 		return -EIO;
 
 	if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
-		dev_err(&chip->pci_dev->dev, "IBF timeout\n");
+		dev_err(chip->dev, "IBF timeout\n");
 		return -EIO;
 	}
 
 	outb(NSC_COMMAND_NORMAL, chip->vendor->base + NSC_COMMAND);
 	if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) {
-		dev_err(&chip->pci_dev->dev, "IBR timeout\n");
+		dev_err(chip->dev, "IBR timeout\n");
 		return -EIO;
 	}
 
 	for (i = 0; i < count; i++) {
 		if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
-			dev_err(&chip->pci_dev->dev,
+			dev_err(chip->dev,
 				"IBF timeout (while writing data)\n");
 			return -EIO;
 		}
@@ -207,7 +207,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
 	}
 
 	if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
-		dev_err(&chip->pci_dev->dev, "IBF timeout\n");
+		dev_err(chip->dev, "IBF timeout\n");
 		return -EIO;
 	}
 	outb(NSC_COMMAND_EOC, chip->vendor->base + NSC_COMMAND);
@@ -325,7 +325,7 @@ static int __devinit tpm_nsc_init(struct pci_dev *pci_dev,
 	/* enable the DPM module */
 	tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);
 
-	if ((rc = tpm_register_hardware(pci_dev, &tpm_nsc)) < 0)
+	if ((rc = tpm_register_hardware(&pci_dev->dev, &tpm_nsc)) < 0)
 		goto out_err;
 
 	return 0;
@@ -335,6 +335,14 @@ out_err:
 	return rc;
 }
 
+static void __devexit tpm_nsc_remove(struct pci_dev *pci_dev)
+{
+	struct tpm_chip *chip = pci_get_drvdata(pci_dev);
+
+	if ( chip )
+		tpm_remove_hardware(chip->dev);
+}
+
 static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
@@ -354,7 +362,7 @@ static struct pci_driver nsc_pci_driver = {
 	.name = "tpm_nsc",
 	.id_table = tpm_pci_tbl,
 	.probe = tpm_nsc_init,
-	.remove = __devexit_p(tpm_remove),
+	.remove = __devexit_p(tpm_nsc_remove),
 	.suspend = tpm_pm_suspend,
 	.resume = tpm_pm_resume,
 };