[PATCH] tpm: use ioread8 and iowrite8

Use ioread8 and iowrite8 as suggested.

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>

2 files changed, 38 insertions, 31 deletions

diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c
index deb4b5c80914..ff3654964fe3 100644
--- a/drivers/char/tpm/tpm_atmel.c
+++ b/drivers/char/tpm/tpm_atmel.c
@@ -47,13 +47,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
                 return -EIO;
 
         for (i = 0; i < 6; i++) {
-                status = atmel_getb(chip, 1);
+                status = ioread8(chip->vendor->iobase + 1);
                 if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-                        dev_err(chip->dev,
-                                "error reading header\n");
+                        dev_err(chip->dev, "error reading header\n");
                         return -EIO;
                 }
-                *buf++ = atmel_getb(chip, 0);
+                *buf++ = ioread8(chip->vendor->iobase);
         }
 
         /* size of the data received */
@@ -64,10 +63,9 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
                 dev_err(chip->dev,
                         "Recv size(%d) less than available space\n", size);
                 for (; i < size; i++) { /* clear the waiting data anyway */
-                        status = atmel_getb(chip, 1);
+                        status = ioread8(chip->vendor->iobase + 1);
                         if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-                                dev_err(chip->dev,
-                                        "error reading data\n");
+                                dev_err(chip->dev, "error reading data\n");
                                 return -EIO;
                         }
                 }
@@ -76,17 +74,17 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 
         /* read all the data available */
         for (; i < size; i++) {
-                status = atmel_getb(chip, 1);
+                status = ioread8(chip->vendor->iobase + 1);
                 if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
-                        dev_err(chip->dev,
-                                "error reading data\n");
+                        dev_err(chip->dev, "error reading data\n");
                         return -EIO;
                 }
-                *buf++ = atmel_getb(chip, 0);
+                *buf++ = ioread8(chip->vendor->iobase);
         }
 
         /* make sure data available is gone */
-        status = atmel_getb(chip, 1);
+        status = ioread8(chip->vendor->iobase + 1);
+
         if (status & ATML_STATUS_DATA_AVAIL) {
                 dev_err(chip->dev, "data available is stuck\n");
                 return -EIO;
@@ -102,7 +100,7 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
         dev_dbg(chip->dev, "tpm_atml_send:\n");
         for (i = 0; i < count; i++) {
                 dev_dbg(chip->dev, "%d 0x%x(%d)\n",  i, buf[i], buf[i]);
-                atmel_putb(buf[i], chip, 0);
+                iowrite8(buf[i], chip->vendor->iobase);
         }
 
         return count;
@@ -110,12 +108,12 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
 
 static void tpm_atml_cancel(struct tpm_chip *chip)
 {
-        atmel_putb(ATML_STATUS_ABORT, chip, 1);
+        iowrite8(ATML_STATUS_ABORT, chip->vendor->iobase + 1);
 }
 
 static u8 tpm_atml_status(struct tpm_chip *chip)
 {
-        return atmel_getb(chip, 1);
+        return ioread8(chip->vendor->iobase + 1);
 }
 
 static struct file_operations atmel_ops = {
@@ -162,7 +160,8 @@ static void atml_plat_remove(void)
 
         if (chip) {
                 if (chip->vendor->have_region)
-                        atmel_release_region(chip->vendor->base, chip->vendor->region_size);
+                        atmel_release_region(chip->vendor->base,
+                                             chip->vendor->region_size);
                 atmel_put_base_addr(chip->vendor);
                 tpm_remove_hardware(chip->dev);
                 platform_device_unregister(pdev);
@@ -183,14 +182,19 @@ static int __init init_atmel(void)
 
         driver_register(&atml_drv);
 
-        if (atmel_get_base_addr(&tpm_atmel) != 0) {
+        if ((tpm_atmel.iobase = atmel_get_base_addr(&tpm_atmel)) == NULL) {
                 rc = -ENODEV;
                 goto err_unreg_drv;
         }
 
-        tpm_atmel.have_region = (atmel_request_region( tpm_atmel.base, tpm_atmel.region_size, "tpm_atmel0") == NULL) ? 0 : 1;
+        tpm_atmel.have_region =
+            (atmel_request_region
+             (tpm_atmel.base, tpm_atmel.region_size,
+              "tpm_atmel0") == NULL) ? 0 : 1;
 
-        if (IS_ERR(pdev = platform_device_register_simple("tpm_atmel", -1, NULL, 0 ))) {
+        if (IS_ERR
+            (pdev =
+             platform_device_register_simple("tpm_atmel", -1, NULL, 0))) {
                 rc = PTR_ERR(pdev);
                 goto err_rel_reg;
         }
@@ -202,9 +206,10 @@ static int __init init_atmel(void)
 err_unreg_dev:
         platform_device_unregister(pdev);
 err_rel_reg:
-        if (tpm_atmel.have_region)
-                atmel_release_region(tpm_atmel.base, tpm_atmel.region_size);
         atmel_put_base_addr(&tpm_atmel);
+        if (tpm_atmel.have_region)
+                atmel_release_region(tpm_atmel.base,
+                                     tpm_atmel.region_size);
 err_unreg_drv:
         driver_unregister(&atml_drv);
         return rc;
diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h
index 3c5b9a8d1c49..d3478aaadd77 100644
--- a/drivers/char/tpm/tpm_atmel.h
+++ b/drivers/char/tpm/tpm_atmel.h
@@ -27,12 +27,14 @@
 #define atmel_putb(val, chip, offset) writeb(val, chip->vendor->iobase + offset)
 #define atmel_request_region request_mem_region
 #define atmel_release_region release_mem_region
-static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor)
+
+static inline void atmel_put_base_addr(struct tpm_vendor_specific
+                                         *vendor)
 {
         iounmap(vendor->iobase);
 }
 
-static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
+static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific *vendor)
 {
         struct device_node *dn;
         unsigned long address, size;
@@ -44,11 +46,11 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
         dn = of_find_node_by_name(NULL, "tpm");
 
         if (!dn)
-                return 1;
+                return NULL;
 
         if (!device_is_compatible(dn, "AT97SC3201")) {
                 of_node_put(dn);
-                return 1;
+                return NULL;
         }
 
         reg = (unsigned int *) get_property(dn, "reg", &reglen);
@@ -71,8 +73,7 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
 
         vendor->base = address;
         vendor->region_size = size;
-        vendor->iobase = ioremap(address, size);
-        return 0;
+        return ioremap(vendor->base, vendor->region_size);
 }
 #else
 #define atmel_getb(chip, offset) inb(chip->vendor->base + offset)
@@ -105,18 +106,19 @@ static int atmel_verify_tpm11(void)
         return 0;
 }
 
-static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor)
+static inline void atmel_put_base_addr(struct tpm_vendor_specific
+                                         *vendor)
 {
 }
 
 /* Determine where to talk to device */
-static unsigned long atmel_get_base_addr(struct tpm_vendor_specific
+static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific
                                          *vendor)
 {
         int lo, hi;
 
         if (atmel_verify_tpm11() != 0)
-                return 1;
+                return NULL;
 
         lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO);
         hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI);
@@ -124,6 +126,6 @@ static unsigned long atmel_get_base_addr(struct tpm_vendor_specific
         vendor->base = (hi << 8) | lo;
         vendor->region_size = 2;
 
-        return 0;
+        return ioport_map(vendor->base, vendor->region_size);
 }
 #endif