diff options
author | Alan Stern <stern@rowland.harvard.edu> | 2010-08-05 17:12:14 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 21:35:45 (GMT) |
commit | b409214c683ed06c26e2cdad0be546ad11463354 (patch) | |
tree | e8274abb90ceb25877b689af00248c69a764db1a /drivers | |
parent | b3e670443b7fb8a2d29831b62b44a039c283e351 (diff) | |
download | linux-b409214c683ed06c26e2cdad0be546ad11463354.tar.xz |
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>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/usb/core/driver.c | 6 | ||||
-rw-r--r-- | drivers/usb/core/usb.c | 6 | ||||
-rw-r--r-- | drivers/usb/host/uhci-debug.c | 3 | ||||
-rw-r--r-- | drivers/usb/host/uhci-hcd.c | 23 |
4 files changed, 15 insertions, 23 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 880f65b..d7a4401 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -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 }; diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 5ae14f6..fdd4130 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -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 }; diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c index c168999..6e7fb5f 100644 --- a/drivers/usb/host/uhci-debug.c +++ b/drivers/usb/host/uhci-debug.c @@ -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 */ diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index b045060..f52d04d 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -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; } |