#include #include #include #include #include static LIST_HEAD(func_list); static DEFINE_MUTEX(func_lock); static struct usb_function_instance *try_get_usb_function_instance(const char *name) { struct usb_function_driver *fd; struct usb_function_instance *fi; fi = ERR_PTR(-ENOENT); mutex_lock(&func_lock); list_for_each_entry(fd, &func_list, list) { if (strcmp(name, fd->name)) continue; if (!try_module_get(fd->mod)) { fi = ERR_PTR(-EBUSY); break; } fi = fd->alloc_inst(); if (IS_ERR(fi)) module_put(fd->mod); else fi->fd = fd; break; } mutex_unlock(&func_lock); return fi; } struct usb_function_instance *usb_get_function_instance(const char *name) { struct usb_function_instance *fi; int ret; fi = try_get_usb_function_instance(name); if (!IS_ERR(fi)) return fi; ret = PTR_ERR(fi); if (ret != -ENOENT) return fi; ret = request_module("usbfunc:%s", name); if (ret < 0) return ERR_PTR(ret); return try_get_usb_function_instance(name); } EXPORT_SYMBOL_GPL(usb_get_function_instance); struct usb_function *usb_get_function(struct usb_function_instance *fi) { struct usb_function *f; f = fi->fd->alloc_func(fi); if (IS_ERR(f)) return f; f->fi = fi; return f; } EXPORT_SYMBOL_GPL(usb_get_function); void usb_put_function_instance(struct usb_function_instance *fi) { struct module *mod; if (!fi) return; mod = fi->fd->mod; fi->free_func_inst(fi); module_put(mod); } EXPORT_SYMBOL_GPL(usb_put_function_instance); void usb_put_function(struct usb_function *f) { if (!f) return; f->free_func(f); } EXPORT_SYMBOL_GPL(usb_put_function); int usb_function_register(struct usb_function_driver *newf) { struct usb_function_driver *fd; int ret; ret = -EEXIST; mutex_lock(&func_lock); list_for_each_entry(fd, &func_list, list) { if (!strcmp(fd->name, newf->name)) goto out; } ret = 0; list_add_tail(&newf->list, &func_list); out: mutex_unlock(&func_lock); return ret; } EXPORT_SYMBOL_GPL(usb_function_register); void usb_function_unregister(struct usb_function_driver *fd) { mutex_lock(&func_lock); list_del(&fd->list); mutex_unlock(&func_lock); } EXPORT_SYMBOL_GPL(usb_function_unregister); ='form'>
path: root/net/phonet/pep-gprs.c
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authorJiri Slaby <jslaby@suse.cz>2017-01-18 14:29:21 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-19 08:39:44 +0100
commitb5b46c4740aed1538544f0fa849c5b76c7823469 (patch)
tree125e7aced4835bad6f6a0c0d02d012f333caf922 /net/phonet/pep-gprs.c
parentfa19a769f82fb9a5ca000b83cacd13fcaeda51ac (diff)
objtool: Fix IRET's opcode
The IRET opcode is 0xcf according to the Intel manual and also to objdump of my vmlinux: 1ea8: 48 cf iretq Fix the opcode in arch_decode_instruction(). The previous value (0xc5) seems to correspond to LDS. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170118132921.19319-1-jslaby@suse.cz Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/phonet/pep-gprs.c')