Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-30 14:52:05 +00:00
Code Issues Packages Projects Releases Wiki Activity
85212d4e04
linux/drivers/pnp/base.h
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

188 lines
5.9 KiB
C
Raw Blame History

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
* Bjorn Helgaas <bjorn.helgaas@hp.com>
*/
extern struct mutex pnp_lock;
extern const struct attribute_group *pnp_dev_groups[];
void *pnp_alloc(long size);
int pnp_register_protocol(struct pnp_protocol *protocol);
void pnp_unregister_protocol(struct pnp_protocol *protocol);
#define PNP_EISA_ID_MASK 0x7fffffff
void pnp_eisa_id_to_string(u32 id, char *str);
struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *, int id,
const char *pnpid);
struct pnp_card *pnp_alloc_card(struct pnp_protocol *, int id, char *pnpid);
int pnp_add_device(struct pnp_dev *dev);
struct pnp_id *pnp_add_id(struct pnp_dev *dev, const char *id);
int pnp_add_card(struct pnp_card *card);
void pnp_remove_card(struct pnp_card *card);
int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
void pnp_remove_card_device(struct pnp_dev *dev);
struct pnp_port {
resource_size_t min; /* min base number */
resource_size_t max; /* max base number */
resource_size_t align; /* align boundary */
resource_size_t size; /* size of range */
unsigned char flags; /* port flags */
};
#define PNP_IRQ_NR 256
typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t;
struct pnp_irq {
pnp_irq_mask_t map; /* bitmap for IRQ lines */
unsigned char flags; /* IRQ flags */
};
struct pnp_dma {
unsigned char map; /* bitmask for DMA channels */
unsigned char flags; /* DMA flags */
};
struct pnp_mem {
resource_size_t min; /* min base number */
resource_size_t max; /* max base number */
resource_size_t align; /* align boundary */
resource_size_t size; /* size of range */
unsigned char flags; /* memory flags */
};
#define PNP_OPTION_DEPENDENT 0x80000000
#define PNP_OPTION_SET_MASK 0xffff
#define PNP_OPTION_SET_SHIFT 12
#define PNP_OPTION_PRIORITY_MASK 0xfff
#define PNP_OPTION_PRIORITY_SHIFT 0
#define PNP_RES_PRIORITY_PREFERRED 0
#define PNP_RES_PRIORITY_ACCEPTABLE 1
#define PNP_RES_PRIORITY_FUNCTIONAL 2
#define PNP_RES_PRIORITY_INVALID PNP_OPTION_PRIORITY_MASK
struct pnp_option {
struct list_head list;
unsigned int flags; /* independent/dependent, set, priority */
unsigned long type; /* IORESOURCE_{IO,MEM,IRQ,DMA} */
union {
struct pnp_port port;
struct pnp_irq irq;
struct pnp_dma dma;
struct pnp_mem mem;
} u;
};
int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
pnp_irq_mask_t *map, unsigned char flags);
int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
unsigned char map, unsigned char flags);
int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
resource_size_t min, resource_size_t max,
resource_size_t align, resource_size_t size,
unsigned char flags);
int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
resource_size_t min, resource_size_t max,
resource_size_t align, resource_size_t size,
unsigned char flags);
static inline int pnp_option_is_dependent(struct pnp_option *option)
{
return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0;
}
static inline unsigned int pnp_option_set(struct pnp_option *option)
{
return (option->flags >> PNP_OPTION_SET_SHIFT) & PNP_OPTION_SET_MASK;
}
static inline unsigned int pnp_option_priority(struct pnp_option *option)
{
return (option->flags >> PNP_OPTION_PRIORITY_SHIFT) &
PNP_OPTION_PRIORITY_MASK;
}
static inline unsigned int pnp_new_dependent_set(struct pnp_dev *dev,
int priority)
{
unsigned int flags;
if (priority > PNP_RES_PRIORITY_FUNCTIONAL) {
dev_warn(&dev->dev, "invalid dependent option priority %d "
"clipped to %d", priority,
PNP_RES_PRIORITY_INVALID);
priority = PNP_RES_PRIORITY_INVALID;
}
flags = PNP_OPTION_DEPENDENT |
((dev->num_dependent_sets & PNP_OPTION_SET_MASK) <<
PNP_OPTION_SET_SHIFT) |
((priority & PNP_OPTION_PRIORITY_MASK) <<
PNP_OPTION_PRIORITY_SHIFT);
dev->num_dependent_sets++;
return flags;
}
char *pnp_option_priority_name(struct pnp_option *option);
void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option);
void pnp_init_resources(struct pnp_dev *dev);
void pnp_fixup_device(struct pnp_dev *dev);
void pnp_free_options(struct pnp_dev *dev);
int __pnp_add_device(struct pnp_dev *dev);
void __pnp_remove_device(struct pnp_dev *dev);
int pnp_check_port(struct pnp_dev *dev, struct resource *res);
int pnp_check_mem(struct pnp_dev *dev, struct resource *res);
int pnp_check_irq(struct pnp_dev *dev, struct resource *res);
#ifdef CONFIG_ISA_DMA_API
int pnp_check_dma(struct pnp_dev *dev, struct resource *res);
#endif
char *pnp_resource_type_name(struct resource *res);
void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc);
void pnp_free_resources(struct pnp_dev *dev);
unsigned long pnp_resource_type(struct resource *res);
struct pnp_resource {
struct list_head list;
struct resource res;
};
void pnp_free_resource(struct pnp_resource *pnp_res);
struct pnp_resource *pnp_add_resource(struct pnp_dev *dev,
struct resource *res);
struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
int flags);
struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
int flags);
struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
resource_size_t start,
resource_size_t end, int flags);
struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
resource_size_t start,
resource_size_t end, int flags);
struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
resource_size_t start,
resource_size_t end);
extern int pnp_debug;
#if defined(CONFIG_PNP_DEBUG_MESSAGES)
#define pnp_dbg(dev, format, arg...) \
({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
#else
#define pnp_dbg(dev, format, arg...) \
({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
#endif
Reference in New Issue View Git Blame Copy Permalink