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path: root/drivers/pci/hotplug/cpcihp_zt5550.c
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Diffstat (limited to 'drivers/pci/hotplug/cpcihp_zt5550.c')
-rw-r--r--drivers/pci/hotplug/cpcihp_zt5550.c87
1 files changed, 34 insertions, 53 deletions
diff --git a/drivers/pci/hotplug/cpcihp_zt5550.c b/drivers/pci/hotplug/cpcihp_zt5550.c
index 449b4bbc8301..ae63e5a393c2 100644
--- a/drivers/pci/hotplug/cpcihp_zt5550.c
+++ b/drivers/pci/hotplug/cpcihp_zt5550.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* cpcihp_zt5550.c
*
@@ -7,26 +8,6 @@
* Copyright 2001 Intel San Luis Obispo
* Copyright 2000,2001 MontaVista Software Inc.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
* Send feedback to <scottm@somanetworks.com>
*/
@@ -48,13 +29,13 @@
#define dbg(format, arg...) \
do { \
- if(debug) \
- printk (KERN_DEBUG "%s: " format "\n", \
- MY_NAME , ## arg); \
- } while(0)
-#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg)
-#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
-#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
+ if (debug) \
+ printk(KERN_DEBUG "%s: " format "\n", \
+ MY_NAME, ## arg); \
+ } while (0)
+#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME, ## arg)
+#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME, ## arg)
+#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME, ## arg)
/* local variables */
static bool debug;
@@ -82,13 +63,13 @@ static int zt5550_hc_config(struct pci_dev *pdev)
int ret;
/* Since we know that no boards exist with two HC chips, treat it as an error */
- if(hc_dev) {
+ if (hc_dev) {
err("too many host controller devices?");
return -EBUSY;
}
ret = pci_enable_device(pdev);
- if(ret) {
+ if (ret) {
err("cannot enable %s\n", pci_name(pdev));
return ret;
}
@@ -98,7 +79,7 @@ static int zt5550_hc_config(struct pci_dev *pdev)
dbg("pci resource start %llx", (unsigned long long)pci_resource_start(hc_dev, 1));
dbg("pci resource len %llx", (unsigned long long)pci_resource_len(hc_dev, 1));
- if(!request_mem_region(pci_resource_start(hc_dev, 1),
+ if (!request_mem_region(pci_resource_start(hc_dev, 1),
pci_resource_len(hc_dev, 1), MY_NAME)) {
err("cannot reserve MMIO region");
ret = -ENOMEM;
@@ -107,7 +88,7 @@ static int zt5550_hc_config(struct pci_dev *pdev)
hc_registers =
ioremap(pci_resource_start(hc_dev, 1), pci_resource_len(hc_dev, 1));
- if(!hc_registers) {
+ if (!hc_registers) {
err("cannot remap MMIO region %llx @ %llx",
(unsigned long long)pci_resource_len(hc_dev, 1),
(unsigned long long)pci_resource_start(hc_dev, 1));
@@ -146,7 +127,7 @@ exit_disable_device:
static int zt5550_hc_cleanup(void)
{
- if(!hc_dev)
+ if (!hc_dev)
return -ENODEV;
iounmap(hc_registers);
@@ -170,9 +151,9 @@ static int zt5550_hc_check_irq(void *dev_id)
u8 reg;
ret = 0;
- if(dev_id == zt5550_hpc.dev_id) {
+ if (dev_id == zt5550_hpc.dev_id) {
reg = readb(csr_int_status);
- if(reg)
+ if (reg)
ret = 1;
}
return ret;
@@ -182,9 +163,9 @@ static int zt5550_hc_enable_irq(void)
{
u8 reg;
- if(hc_dev == NULL) {
+ if (hc_dev == NULL)
return -ENODEV;
- }
+
reg = readb(csr_int_mask);
reg = reg & ~ENUM_INT_MASK;
writeb(reg, csr_int_mask);
@@ -195,9 +176,8 @@ static int zt5550_hc_disable_irq(void)
{
u8 reg;
- if(hc_dev == NULL) {
+ if (hc_dev == NULL)
return -ENODEV;
- }
reg = readb(csr_int_mask);
reg = reg | ENUM_INT_MASK;
@@ -205,20 +185,20 @@ static int zt5550_hc_disable_irq(void)
return 0;
}
-static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
+static int zt5550_hc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int status;
status = zt5550_hc_config(pdev);
- if(status != 0) {
+ if (status != 0)
return status;
- }
+
dbg("returned from zt5550_hc_config");
- memset(&zt5550_hpc, 0, sizeof (struct cpci_hp_controller));
+ memset(&zt5550_hpc, 0, sizeof(struct cpci_hp_controller));
zt5550_hpc_ops.query_enum = zt5550_hc_query_enum;
zt5550_hpc.ops = &zt5550_hpc_ops;
- if(!poll) {
+ if (!poll) {
zt5550_hpc.irq = hc_dev->irq;
zt5550_hpc.irq_flags = IRQF_SHARED;
zt5550_hpc.dev_id = hc_dev;
@@ -231,15 +211,16 @@ static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id
}
status = cpci_hp_register_controller(&zt5550_hpc);
- if(status != 0) {
+ if (status != 0) {
err("could not register cPCI hotplug controller");
goto init_hc_error;
}
dbg("registered controller");
/* Look for first device matching cPCI bus's bridge vendor and device IDs */
- if(!(bus0_dev = pci_get_device(PCI_VENDOR_ID_DEC,
- PCI_DEVICE_ID_DEC_21154, NULL))) {
+ bus0_dev = pci_get_device(PCI_VENDOR_ID_DEC,
+ PCI_DEVICE_ID_DEC_21154, NULL);
+ if (!bus0_dev) {
status = -ENODEV;
goto init_register_error;
}
@@ -247,14 +228,14 @@ static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id
pci_dev_put(bus0_dev);
status = cpci_hp_register_bus(bus0, 0x0a, 0x0f);
- if(status != 0) {
+ if (status != 0) {
err("could not register cPCI hotplug bus");
goto init_register_error;
}
dbg("registered bus");
status = cpci_hp_start();
- if(status != 0) {
+ if (status != 0) {
err("could not started cPCI hotplug system");
cpci_hp_unregister_bus(bus0);
goto init_register_error;
@@ -280,12 +261,12 @@ static void zt5550_hc_remove_one(struct pci_dev *pdev)
}
-static struct pci_device_id zt5550_hc_pci_tbl[] = {
+static const struct pci_device_id zt5550_hc_pci_tbl[] = {
{ PCI_VENDOR_ID_ZIATECH, PCI_DEVICE_ID_ZIATECH_5550_HC, PCI_ANY_ID, PCI_ANY_ID, },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, zt5550_hc_pci_tbl);
-
+
static struct pci_driver zt5550_hc_driver = {
.name = "zt5550_hc",
.id_table = zt5550_hc_pci_tbl,
@@ -295,16 +276,16 @@ static struct pci_driver zt5550_hc_driver = {
static int __init zt5550_init(void)
{
- struct resource* r;
+ struct resource *r;
int rc;
info(DRIVER_DESC " version: " DRIVER_VERSION);
r = request_region(ENUM_PORT, 1, "#ENUM hotswap signal register");
- if(!r)
+ if (!r)
return -EBUSY;
rc = pci_register_driver(&zt5550_hc_driver);
- if(rc < 0)
+ if (rc < 0)
release_region(ENUM_PORT, 1);
return rc;
}
generated by cgit (git 2.34.1) at 2025-12-27 23:27:52 +0000