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USB: remove fake "address-of" expressions 

Fake "address-of" expressions that evaluate to NULL generally confuse
readers and can provoke compiler warnings.  This patch (as1412)
removes three such fake expressions, using "#ifdef"s in their place.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Alan Stern 2010-08-05 13:12:14 -04:00 committed by Greg Kroah-Hartman
parent b3e670443b
commit b409214c68
4 changed files with 15 additions and 23 deletions
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6
drivers/usb/core/driver.c
View File

@ -1791,15 +1791,13 @@ static const struct dev_pm_ops usb_bus_pm_ops = {
.runtime_idle = usb_runtime_idle,
};
#else
#define usb_bus_pm_ops (*(const struct dev_pm_ops *) NULL)
#endif /* CONFIG_USB_SUSPEND */
struct bus_type usb_bus_type = {
.name = "usb",
.match = usb_device_match,
.uevent = usb_uevent,
#ifdef CONFIG_USB_SUSPEND
.pm = &usb_bus_pm_ops,
#endif
};

6
drivers/usb/core/usb.c
View File

@ -317,10 +317,6 @@ static const struct dev_pm_ops usb_device_pm_ops = {
.restore = usb_dev_restore,
};
#else
#define usb_device_pm_ops (*(struct dev_pm_ops *) NULL)
#endif /* CONFIG_PM */
@ -338,7 +334,9 @@ struct device_type usb_device_type = {
.release = usb_release_dev,
.uevent = usb_dev_uevent,
.devnode = usb_devnode,
#ifdef CONFIG_PM
.pm = &usb_device_pm_ops,
#endif
};

3
drivers/usb/host/uhci-debug.c
View File

@ -17,7 +17,6 @@
#include "uhci-hcd.h"
#define uhci_debug_operations (* (const struct file_operations *) NULL)
static struct dentry *uhci_debugfs_root;
#ifdef DEBUG
@ -558,7 +557,6 @@ static int uhci_debug_release(struct inode *inode, struct file *file)
return 0;
}
#undef uhci_debug_operations
static const struct file_operations uhci_debug_operations = {
.owner = THIS_MODULE,
.open = uhci_debug_open,
@ -566,6 +564,7 @@ static const struct file_operations uhci_debug_operations = {
.read = uhci_debug_read,
.release = uhci_debug_release,
};
#define UHCI_DEBUG_OPS
#endif /* CONFIG_DEBUG_FS */

23
drivers/usb/host/uhci-hcd.c
View File

@ -597,7 +597,7 @@ static int uhci_start(struct usb_hcd *hcd)
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
int retval = -EBUSY;
int i;
struct dentry *dentry;
struct dentry __maybe_unused *dentry;
hcd->uses_new_polling = 1;
@ -607,18 +607,16 @@ static int uhci_start(struct usb_hcd *hcd)
INIT_LIST_HEAD(&uhci->idle_qh_list);
init_waitqueue_head(&uhci->waitqh);
if (DEBUG_CONFIGURED) {
dentry = debugfs_create_file(hcd->self.bus_name,
S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root,
uhci, &uhci_debug_operations);
if (!dentry) {
dev_err(uhci_dev(uhci), "couldn't create uhci "
"debugfs entry\n");
retval = -ENOMEM;
goto err_create_debug_entry;
}
uhci->dentry = dentry;
#ifdef UHCI_DEBUG_OPS
dentry = debugfs_create_file(hcd->self.bus_name,
S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root,
uhci, &uhci_debug_operations);
if (!dentry) {
dev_err(uhci_dev(uhci), "couldn't create uhci debugfs entry\n");
return -ENOMEM;
}
uhci->dentry = dentry;
#endif
uhci->frame = dma_alloc_coherent(uhci_dev(uhci),
UHCI_NUMFRAMES * sizeof(*uhci->frame),
@ -732,7 +730,6 @@ err_alloc_frame_cpu:
err_alloc_frame:
debugfs_remove(uhci->dentry);
err_create_debug_entry:
return retval;
}