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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

Browse Source 
Conflicts:
	net/nfc/llcp/llcp.c
This commit is contained in:
John W. Linville
2013-03-18 09:39:21 -04:00
parent 4969b41798 9437a248e7
commit 49c87cd1ea
101 changed files with 2633 additions and 600 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/device-mapper/dm-raid.txt
+37 -7
View File
@@ -30,6 +30,7 @@ The target is named "raid" and it accepts the following parameters:
raid10 Various RAID10 inspired algorithms chosen by additional params
- RAID10: Striped Mirrors (aka 'Striping on top of mirrors')
- RAID1E: Integrated Adjacent Stripe Mirroring
- RAID1E: Integrated Offset Stripe Mirroring
- and other similar RAID10 variants
Reference: Chapter 4 of
@@ -64,15 +65,15 @@ The target is named "raid" and it accepts the following parameters:
synchronisation state for each region.
[raid10_copies <# copies>]
[raid10_format near]
[raid10_format <near|far|offset>]
These two options are used to alter the default layout of
a RAID10 configuration. The number of copies is can be
specified, but the default is 2. There are other variations
to how the copies are laid down - the default and only current
option is "near". Near copies are what most people think of
with respect to mirroring. If these options are left
unspecified, or 'raid10_copies 2' and/or 'raid10_format near'
are given, then the layouts for 2, 3 and 4 devices are:
specified, but the default is 2. There are also three
variations to how the copies are laid down - the default
is "near". Near copies are what most people think of with
respect to mirroring. If these options are left unspecified,
or 'raid10_copies 2' and/or 'raid10_format near' are given,
then the layouts for 2, 3 and 4 devices are:
2 drives 3 drives 4 drives
-------- ---------- --------------
A1 A1 A1 A1 A2 A1 A1 A2 A2
@@ -85,6 +86,33 @@ The target is named "raid" and it accepts the following parameters:
3-device layout is what might be called a 'RAID1E - Integrated
Adjacent Stripe Mirroring'.
If 'raid10_copies 2' and 'raid10_format far', then the layouts
for 2, 3 and 4 devices are:
2 drives 3 drives 4 drives
-------- -------------- --------------------
A1 A2 A1 A2 A3 A1 A2 A3 A4
A3 A4 A4 A5 A6 A5 A6 A7 A8
A5 A6 A7 A8 A9 A9 A10 A11 A12
.. .. .. .. .. .. .. .. ..
A2 A1 A3 A1 A2 A2 A1 A4 A3
A4 A3 A6 A4 A5 A6 A5 A8 A7
A6 A5 A9 A7 A8 A10 A9 A12 A11
.. .. .. .. .. .. .. .. ..
If 'raid10_copies 2' and 'raid10_format offset', then the
layouts for 2, 3 and 4 devices are:
2 drives 3 drives 4 drives
-------- ------------ -----------------
A1 A2 A1 A2 A3 A1 A2 A3 A4
A2 A1 A3 A1 A2 A2 A1 A4 A3
A3 A4 A4 A5 A6 A5 A6 A7 A8
A4 A3 A6 A4 A5 A6 A5 A8 A7
A5 A6 A7 A8 A9 A9 A10 A11 A12
A6 A5 A9 A7 A8 A10 A9 A12 A11
.. .. .. .. .. .. .. .. ..
Here we see layouts closely akin to 'RAID1E - Integrated
Offset Stripe Mirroring'.
<#raid_devs>: The number of devices composing the array.
Each device consists of two entries. The first is the device
containing the metadata (if any); the second is the one containing the
@@ -142,3 +170,5 @@ Version History
1.3.0 Added support for RAID 10
1.3.1 Allow device replacement/rebuild for RAID 10
1.3.2 Fix/improve redundancy checking for RAID10
1.4.0 Non-functional change. Removes arg from mapping function.
1.4.1 Add RAID10 "far" and "offset" algorithm support.
Documentation/networking/tuntap.txt
+77
View File
@@ -105,6 +105,83 @@ Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
Proto [2 bytes]
Raw protocol(IP, IPv6, etc) frame.
3.3 Multiqueue tuntap interface:
From version 3.8, Linux supports multiqueue tuntap which can uses multiple
file descriptors (queues) to parallelize packets sending or receiving. The
device allocation is the same as before, and if user wants to create multiple
queues, TUNSETIFF with the same device name must be called many times with
IFF_MULTI_QUEUE flag.
char *dev should be the name of the device, queues is the number of queues to
be created, fds is used to store and return the file descriptors (queues)
created to the caller. Each file descriptor were served as the interface of a
queue which could be accessed by userspace.
#include <linux/if.h>
#include <linux/if_tun.h>
int tun_alloc_mq(char *dev, int queues, int *fds)
{
struct ifreq ifr;
int fd, err, i;
if (!dev)
return -1;
memset(&ifr, 0, sizeof(ifr));
/* Flags: IFF_TUN - TUN device (no Ethernet headers)
* IFF_TAP - TAP device
*
* IFF_NO_PI - Do not provide packet information
* IFF_MULTI_QUEUE - Create a queue of multiqueue device
*/
ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_MULTI_QUEUE;
strcpy(ifr.ifr_name, dev);
for (i = 0; i < queues; i++) {
if ((fd = open("/dev/net/tun", O_RDWR)) < 0)
goto err;
err = ioctl(fd, TUNSETIFF, (void *)&ifr);
if (err) {
close(fd);
goto err;
}
fds[i] = fd;
}
return 0;
err:
for (--i; i >= 0; i--)
close(fds[i]);
return err;
}
A new ioctl(TUNSETQUEUE) were introduced to enable or disable a queue. When
calling it with IFF_DETACH_QUEUE flag, the queue were disabled. And when
calling it with IFF_ATTACH_QUEUE flag, the queue were enabled. The queue were
enabled by default after it was created through TUNSETIFF.
fd is the file descriptor (queue) that we want to enable or disable, when
enable is true we enable it, otherwise we disable it
#include <linux/if.h>
#include <linux/if_tun.h>
int tun_set_queue(int fd, int enable)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
if (enable)
ifr.ifr_flags = IFF_ATTACH_QUEUE;
else
ifr.ifr_flags = IFF_DETACH_QUEUE;
return ioctl(fd, TUNSETQUEUE, (void *)&ifr);
}
Universal TUN/TAP device driver Frequently Asked Question.
1. What platforms are supported by TUN/TAP driver ?
MAINTAINERS
-18
View File
@@ -114,12 +114,6 @@ Maintainers List (try to look for most precise areas first)
-----------------------------------
3C505 NETWORK DRIVER
M: Philip Blundell <philb@gnu.org>
L: netdev@vger.kernel.org
S: Maintained
F: drivers/net/ethernet/i825xx/3c505*
3C59X NETWORK DRIVER
M: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
L: netdev@vger.kernel.org
@@ -2361,12 +2355,6 @@ W: http://www.arm.linux.org.uk/
S: Maintained
F: drivers/video/cyber2000fb.*
CYCLADES 2X SYNC CARD DRIVER
M: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
W: http://oops.ghostprotocols.net:81/blog
S: Maintained
F: drivers/net/wan/cycx*
CYCLADES ASYNC MUX DRIVER
W: http://www.cyclades.com/
S: Orphan
@@ -3067,12 +3055,6 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/kristoffer/linux-hpc.git
F: drivers/video/s1d13xxxfb.c
F: include/video/s1d13xxxfb.h
ETHEREXPRESS-16 NETWORK DRIVER
M: Philip Blundell <philb@gnu.org>
L: netdev@vger.kernel.org
S: Maintained
F: drivers/net/ethernet/i825xx/eexpress.*
ETHERNET BRIDGE
M: Stephen Hemminger <stephen@networkplumber.org>
L: bridge@lists.linux-foundation.org
arch/powerpc/crypto/sha1-powerpc-asm.S
+2 -2
View File
@@ -113,7 +113,7 @@
STEPUP4((t)+16, fn)
_GLOBAL(powerpc_sha_transform)
PPC_STLU r1,-STACKFRAMESIZE(r1)
PPC_STLU r1,-INT_FRAME_SIZE(r1)
SAVE_8GPRS(14, r1)
SAVE_10GPRS(22, r1)
@@ -175,5 +175,5 @@ _GLOBAL(powerpc_sha_transform)
REST_8GPRS(14, r1)
REST_10GPRS(22, r1)
addi r1,r1,STACKFRAMESIZE
addi r1,r1,INT_FRAME_SIZE
blr
arch/powerpc/include/asm/bitops.h
-2
View File
@@ -52,8 +52,6 @@
#define smp_mb__before_clear_bit() smp_mb()
#define smp_mb__after_clear_bit() smp_mb()
#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7)
/* Macro for generating the ***_bits() functions */
#define DEFINE_BITOP(fn, op, prefix, postfix) \
static __inline__ void fn(unsigned long mask, \
arch/powerpc/include/asm/reg.h
+2 -1
View File
@@ -266,7 +266,8 @@
#define SPRN_HSRR0 0x13A /* Hypervisor Save/Restore 0 */
#define SPRN_HSRR1 0x13B /* Hypervisor Save/Restore 1 */
#define SPRN_FSCR 0x099 /* Facility Status & Control Register */
#define FSCR_TAR (1<<8) /* Enable Target Adress Register */
#define FSCR_TAR (1 << (63-55)) /* Enable Target Address Register */
#define FSCR_DSCR (1 << (63-61)) /* Enable Data Stream Control Register */
#define SPRN_TAR 0x32f /* Target Address Register */
#define SPRN_LPCR 0x13E /* LPAR Control Register */
#define LPCR_VPM0 (1ul << (63-0))
arch/powerpc/include/asm/systbl.h
+1
View File
@@ -358,3 +358,4 @@ SYSCALL_SPU(setns)
COMPAT_SYS(process_vm_readv)
COMPAT_SYS(process_vm_writev)
SYSCALL(finit_module)
SYSCALL(ni_syscall) /* sys_kcmp */
arch/powerpc/include/asm/unistd.h
+1 -1
View File
@@ -12,7 +12,7 @@
#include <uapi/asm/unistd.h>
#define __NR_syscalls 354
#define __NR_syscalls 355
#define __NR__exit __NR_exit
#define NR_syscalls __NR_syscalls
arch/powerpc/include/uapi/asm/unistd.h
+1
View File
@@ -376,6 +376,7 @@
#define __NR_process_vm_readv 351
#define __NR_process_vm_writev 352
#define __NR_finit_module 353
#define __NR_kcmp 354
#endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
arch/powerpc/kernel/cpu_setup_power.S
+3 -2
View File
@@ -48,6 +48,7 @@ _GLOBAL(__restore_cpu_power7)
_GLOBAL(__setup_cpu_power8)
mflr r11
bl __init_FSCR
bl __init_hvmode_206
mtlr r11
beqlr
@@ -56,13 +57,13 @@ _GLOBAL(__setup_cpu_power8)
mfspr r3,SPRN_LPCR
oris r3, r3, LPCR_AIL_3@h
bl __init_LPCR
bl __init_FSCR
bl __init_TLB
mtlr r11
blr
_GLOBAL(__restore_cpu_power8)
mflr r11
bl __init_FSCR
mfmsr r3
rldicl. r0,r3,4,63
beqlr
@@ -115,7 +116,7 @@ __init_LPCR:
__init_FSCR:
mfspr r3,SPRN_FSCR
ori r3,r3,FSCR_TAR
ori r3,r3,FSCR_TAR|FSCR_DSCR
mtspr SPRN_FSCR,r3
blr
arch/powerpc/kernel/exceptions-64s.S
+2 -2
View File
@@ -74,13 +74,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) \
mflr r10 ; \
ld r12,PACAKBASE(r13) ; \
LOAD_HANDLER(r12, system_call_entry_direct) ; \
mtlr r12 ; \
mtctr r12 ; \
mfspr r12,SPRN_SRR1 ; \
/* Re-use of r13... No spare regs to do this */ \
li r13,MSR_RI ; \
mtmsrd r13,1 ; \
GET_PACA(r13) ; /* get r13 back */ \
blr ;
bctr ;
#else
/* We can branch directly */
#define SYSCALL_PSERIES_2_DIRECT \
arch/powerpc/platforms/pseries/hvcserver.c
+3 -2
View File
@@ -23,6 +23,7 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <asm/hvcall.h>
#include <asm/hvcserver.h>
@@ -188,9 +189,9 @@ int hvcs_get_partner_info(uint32_t unit_address, struct list_head *head,
= (unsigned int)last_p_partition_ID;
/* copy the Null-term char too */
strncpy(&next_partner_info->location_code[0],
strlcpy(&next_partner_info->location_code[0],
(char *)&pi_buff[2],
strlen((char *)&pi_buff[2]) + 1);
sizeof(next_partner_info->location_code));
list_add_tail(&(next_partner_info->node), head);
next_partner_info = NULL;
drivers/bcma/driver_pci_host.c
+2
View File
@@ -404,6 +404,8 @@ void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc)
return;
}
spin_lock_init(&pc_host->cfgspace_lock);
pc->host_controller = pc_host;
pc_host->pci_controller.io_resource = &pc_host->io_resource;
pc_host->pci_controller.mem_resource = &pc_host->mem_resource;
drivers/bluetooth/ath3k.c
+4
View File
@@ -74,8 +74,10 @@ static struct usb_device_id ath3k_table[] = {
/* Atheros AR3012 with sflash firmware*/
{ USB_DEVICE(0x0CF3, 0x3004) },
{ USB_DEVICE(0x0CF3, 0x3008) },
{ USB_DEVICE(0x0CF3, 0x311D) },
{ USB_DEVICE(0x13d3, 0x3375) },
{ USB_DEVICE(0x04CA, 0x3004) },
{ USB_DEVICE(0x04CA, 0x3005) },
{ USB_DEVICE(0x04CA, 0x3006) },
{ USB_DEVICE(0x04CA, 0x3008) },
@@ -106,8 +108,10 @@ static struct usb_device_id ath3k_blist_tbl[] = {
/* Atheros AR3012 with sflash firmware*/
{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
drivers/bluetooth/btusb.c
+2
View File
@@ -132,8 +132,10 @@ static struct usb_device_id blacklist_table[] = {
/* Atheros 3012 with sflash firmware */
{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
drivers/char/hw_random/core.c
+16 -3
View File
@@ -40,6 +40,7 @@
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
@@ -52,8 +53,12 @@ static struct hwrng *current_rng;
static LIST_HEAD(rng_list);
static DEFINE_MUTEX(rng_mutex);
static int data_avail;
static u8 rng_buffer[SMP_CACHE_BYTES < 32 ? 32 : SMP_CACHE_BYTES]
__cacheline_aligned;
static u8 *rng_buffer;
static size_t rng_buffer_size(void)
{
return SMP_CACHE_BYTES < 32 ? 32 : SMP_CACHE_BYTES;
}
static inline int hwrng_init(struct hwrng *rng)
{
@@ -116,7 +121,7 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
if (!data_avail) {
bytes_read = rng_get_data(current_rng, rng_buffer,
sizeof(rng_buffer),
rng_buffer_size(),
!(filp->f_flags & O_NONBLOCK));
if (bytes_read < 0) {
err = bytes_read;
@@ -307,6 +312,14 @@ int hwrng_register(struct hwrng *rng)
mutex_lock(&rng_mutex);
/* kmalloc makes this safe for virt_to_page() in virtio_rng.c */
err = -ENOMEM;
if (!rng_buffer) {
rng_buffer = kmalloc(rng_buffer_size(), GFP_KERNEL);
if (!rng_buffer)
goto out_unlock;
}
/* Must not register two RNGs with the same name. */
err = -EEXIST;
list_for_each_entry(tmp, &rng_list, list) {
drivers/connector/cn_proc.c
+8
View File
@@ -313,6 +313,12 @@ static void cn_proc_mcast_ctl(struct cn_msg *msg,
(task_active_pid_ns(current) != &init_pid_ns))
return;
/* Can only change if privileged. */
if (!capable(CAP_NET_ADMIN)) {
err = EPERM;
goto out;
}
mc_op = (enum proc_cn_mcast_op *)msg->data;
switch (*mc_op) {
case PROC_CN_MCAST_LISTEN:
@@ -325,6 +331,8 @@ static void cn_proc_mcast_ctl(struct cn_msg *msg,
err = EINVAL;
break;
}
out:
cn_proc_ack(err, msg->seq, msg->ack);
}
drivers/gpio/gpio-ich.c
+2 -2
View File
@@ -128,9 +128,9 @@ static int ichx_read_bit(int reg, unsigned nr)
return data & (1 << bit) ? 1 : 0;
}
static int ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr)
static bool ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr)
{
return (ichx_priv.use_gpio & (1 << (nr / 32))) ? 0 : -ENXIO;
return ichx_priv.use_gpio & (1 << (nr / 32));
}
static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
drivers/gpio/gpiolib.c
+82 -61
View File
@@ -88,13 +88,14 @@ static int gpiod_request(struct gpio_desc *desc, const char *label);
static void gpiod_free(struct gpio_desc *desc);
static int gpiod_direction_input(struct gpio_desc *desc);
static int gpiod_direction_output(struct gpio_desc *desc, int value);
static int gpiod_get_direction(const struct gpio_desc *desc);
static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce);
static int gpiod_get_value_cansleep(struct gpio_desc *desc);
static int gpiod_get_value_cansleep(const struct gpio_desc *desc);
static void gpiod_set_value_cansleep(struct gpio_desc *desc, int value);
static int gpiod_get_value(struct gpio_desc *desc);
static int gpiod_get_value(const struct gpio_desc *desc);
static void gpiod_set_value(struct gpio_desc *desc, int value);
static int gpiod_cansleep(struct gpio_desc *desc);
static int gpiod_to_irq(struct gpio_desc *desc);
static int gpiod_cansleep(const struct gpio_desc *desc);
static int gpiod_to_irq(const struct gpio_desc *desc);
static int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
static int gpiod_export_link(struct device *dev, const char *name,
struct gpio_desc *desc);
@@ -171,12 +172,12 @@ static int gpio_ensure_requested(struct gpio_desc *desc)
return 0;
}
/* caller holds gpio_lock *OR* gpio is marked as requested */
static struct gpio_chip *gpiod_to_chip(struct gpio_desc *desc)
static struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc)
{
return desc->chip;
return desc ? desc->chip : NULL;
}
/* caller holds gpio_lock *OR* gpio is marked as requested */
struct gpio_chip *gpio_to_chip(unsigned gpio)
{
return gpiod_to_chip(gpio_to_desc(gpio));
@@ -207,7 +208,7 @@ static int gpiochip_find_base(int ngpio)
}
/* caller ensures gpio is valid and requested, chip->get_direction may sleep */
static int gpiod_get_direction(struct gpio_desc *desc)
static int gpiod_get_direction(const struct gpio_desc *desc)
{
struct gpio_chip *chip;
unsigned offset;
@@ -223,11 +224,13 @@ static int gpiod_get_direction(struct gpio_desc *desc)
if (status > 0) {
/* GPIOF_DIR_IN, or other positive */
status = 1;
clear_bit(FLAG_IS_OUT, &desc->flags);
/* FLAG_IS_OUT is just a cache of the result of get_direction(),
* so it does not affect constness per se */
clear_bit(FLAG_IS_OUT, &((struct gpio_desc *)desc)->flags);
}
if (status == 0) {
/* GPIOF_DIR_OUT */
set_bit(FLAG_IS_OUT, &desc->flags);
set_bit(FLAG_IS_OUT, &((struct gpio_desc *)desc)->flags);
}
return status;
}
@@ -263,7 +266,7 @@ static DEFINE_MUTEX(sysfs_lock);
static ssize_t gpio_direction_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct gpio_desc *desc = dev_get_drvdata(dev);
const struct gpio_desc *desc = dev_get_drvdata(dev);
ssize_t status;
mutex_lock(&sysfs_lock);
@@ -654,6 +657,11 @@ static ssize_t export_store(struct class *class,
goto done;
desc = gpio_to_desc(gpio);
/* reject invalid GPIOs */
if (!desc) {
pr_warn("%s: invalid GPIO %ld\n", __func__, gpio);
return -EINVAL;
}
/* No extra locking here; FLAG_SYSFS just signifies that the
* request and export were done by on behalf of userspace, so
@@ -690,12 +698,14 @@ static ssize_t unexport_store(struct class *class,
if (status < 0)
goto done;
status = -EINVAL;
desc = gpio_to_desc(gpio);
/* reject bogus commands (gpio_unexport ignores them) */
if (!desc)
goto done;
if (!desc) {
pr_warn("%s: invalid GPIO %ld\n", __func__, gpio);
return -EINVAL;
}
status = -EINVAL;
/* No extra locking here; FLAG_SYSFS just signifies that the
* request and export were done by on behalf of userspace, so
@@ -846,8 +856,10 @@ static int gpiod_export_link(struct device *dev, const char *name,
{
int status = -EINVAL;
if (!desc)
goto done;
if (!desc) {
pr_warn("%s: invalid GPIO\n", __func__);
return -EINVAL;
}
mutex_lock(&sysfs_lock);
@@ -865,7 +877,6 @@ static int gpiod_export_link(struct device *dev, const char *name,
mutex_unlock(&sysfs_lock);
done:
if (status)
pr_debug("%s: gpio%d status %d\n", __func__, desc_to_gpio(desc),
status);
@@ -896,8 +907,10 @@ static int gpiod_sysfs_set_active_low(struct gpio_desc *desc, int value)
struct device *dev = NULL;
int status = -EINVAL;
if (!desc)
goto done;
if (!desc) {
pr_warn("%s: invalid GPIO\n", __func__);
return -EINVAL;
}
mutex_lock(&sysfs_lock);
@@ -914,7 +927,6 @@ static int gpiod_sysfs_set_active_low(struct gpio_desc *desc, int value)
unlock:
mutex_unlock(&sysfs_lock);
done:
if (status)
pr_debug("%s: gpio%d status %d\n", __func__, desc_to_gpio(desc),
status);
@@ -940,8 +952,8 @@ static void gpiod_unexport(struct gpio_desc *desc)
struct device *dev = NULL;
if (!desc) {
status = -EINVAL;
goto done;
pr_warn("%s: invalid GPIO\n", __func__);
return;
}
mutex_lock(&sysfs_lock);
@@ -962,7 +974,7 @@ static void gpiod_unexport(struct gpio_desc *desc)
device_unregister(dev);
put_device(dev);
}
done:
if (status)
pr_debug("%s: gpio%d status %d\n", __func__, desc_to_gpio(desc),
status);
@@ -1384,12 +1396,13 @@ static int gpiod_request(struct gpio_desc *desc, const char *label)
int status = -EPROBE_DEFER;
unsigned long flags;
if (!desc) {
pr_warn("%s: invalid GPIO\n", __func__);
return -EINVAL;
}
spin_lock_irqsave(&gpio_lock, flags);
if (!desc) {
status = -EINVAL;
goto done;
}
chip = desc->chip;
if (chip == NULL)
goto done;
@@ -1432,8 +1445,7 @@ static int gpiod_request(struct gpio_desc *desc, const char *label)
done:
if (status)
pr_debug("_gpio_request: gpio-%d (%s) status %d\n",
desc ? desc_to_gpio(desc) : -1,
label ? : "?", status);
desc_to_gpio(desc), label ? : "?", status);
spin_unlock_irqrestore(&gpio_lock, flags);
return status;
}
@@ -1616,10 +1628,13 @@ static int gpiod_direction_input(struct gpio_desc *desc)
int status = -EINVAL;
int offset;
if (!desc) {
pr_warn("%s: invalid GPIO\n", __func__);
return -EINVAL;
}
spin_lock_irqsave(&gpio_lock, flags);
if (!desc)
goto fail;
chip = desc->chip;
if (!chip || !chip->get || !chip->direction_input)
goto fail;
@@ -1655,13 +1670,9 @@ lose:
return status;
fail:
spin_unlock_irqrestore(&gpio_lock, flags);
if (status) {
int gpio = -1;
if (desc)
gpio = desc_to_gpio(desc);
pr_debug("%s: gpio-%d status %d\n",
__func__, gpio, status);
}
if (status)
pr_debug("%s: gpio-%d status %d\n", __func__,
desc_to_gpio(desc), status);
return status;
}
@@ -1678,6 +1689,11 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value)
int status = -EINVAL;
int offset;
if (!desc) {
pr_warn("%s: invalid GPIO\n", __func__);
return -EINVAL;
}
/* Open drain pin should not be driven to 1 */
if (value && test_bit(FLAG_OPEN_DRAIN, &desc->flags))
return gpiod_direction_input(desc);
@@ -1688,8 +1704,6 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value)
spin_lock_irqsave(&gpio_lock, flags);
if (!desc)
goto fail;
chip = desc->chip;
if (!chip || !chip->set || !chip->direction_output)
goto fail;
@@ -1725,13 +1739,9 @@ lose:
return status;
fail:
spin_unlock_irqrestore(&gpio_lock, flags);
if (status) {
int gpio = -1;
if (desc)
gpio = desc_to_gpio(desc);
pr_debug("%s: gpio-%d status %d\n",
__func__, gpio, status);
}
if (status)
pr_debug("%s: gpio-%d status %d\n", __func__,
desc_to_gpio(desc), status);
return status;
}
@@ -1753,10 +1763,13 @@ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce)
int status = -EINVAL;
int offset;
if (!desc) {
pr_warn("%s: invalid GPIO\n", __func__);
return -EINVAL;
}
spin_lock_irqsave(&gpio_lock, flags);
if (!desc)
goto fail;
chip = desc->chip;
if (!chip || !chip->set || !chip->set_debounce)
goto fail;
@@ -1776,13 +1789,9 @@ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce)
fail:
spin_unlock_irqrestore(&gpio_lock, flags);
if (status) {
int gpio = -1;
if (desc)
gpio = desc_to_gpio(desc);
pr_debug("%s: gpio-%d status %d\n",
__func__, gpio, status);
}
if (status)
pr_debug("%s: gpio-%d status %d\n", __func__,
desc_to_gpio(desc), status);
return status;
}
@@ -1824,12 +1833,14 @@ EXPORT_SYMBOL_GPL(gpio_set_debounce);
* It returns the zero or nonzero value provided by the associated
* gpio_chip.get() method; or zero if no such method is provided.
*/
static int gpiod_get_value(struct gpio_desc *desc)
static int gpiod_get_value(const struct gpio_desc *desc)
{
struct gpio_chip *chip;
int value;
int offset;
if (!desc)
return 0;
chip = desc->chip;
offset = gpio_chip_hwgpio(desc);
/* Should be using gpio_get_value_cansleep() */
@@ -1912,6 +1923,8 @@ static void gpiod_set_value(struct gpio_desc *desc, int value)
{
struct gpio_chip *chip;
if (!desc)
return;
chip = desc->chip;
/* Should be using gpio_set_value_cansleep() */
WARN_ON(chip->can_sleep);
@@ -1938,8 +1951,10 @@ EXPORT_SYMBOL_GPL(__gpio_set_value);
* This is used directly or indirectly to implement gpio_cansleep(). It
* returns nonzero if access reading or writing the GPIO value can sleep.
*/
static int gpiod_cansleep(struct gpio_desc *desc)
static int gpiod_cansleep(const struct gpio_desc *desc)
{
if (!desc)
return 0;
/* only call this on GPIOs that are valid! */
return desc->chip->can_sleep;
}
@@ -1959,11 +1974,13 @@ EXPORT_SYMBOL_GPL(__gpio_cansleep);
* It returns the number of the IRQ signaled by this (input) GPIO,
* or a negative errno.
*/
static int gpiod_to_irq(struct gpio_desc *desc)
static int gpiod_to_irq(const struct gpio_desc *desc)
{
struct gpio_chip *chip;
int offset;
if (!desc)
return -EINVAL;
chip = desc->chip;
offset = gpio_chip_hwgpio(desc);
return chip->to_irq ? chip->to_irq(chip, offset) : -ENXIO;
@@ -1980,13 +1997,15 @@ EXPORT_SYMBOL_GPL(__gpio_to_irq);
* Common examples include ones connected to I2C or SPI chips.
*/
static int gpiod_get_value_cansleep(struct gpio_desc *desc)
static int gpiod_get_value_cansleep(const struct gpio_desc *desc)
{
struct gpio_chip *chip;
int value;
int offset;
might_sleep_if(extra_checks);
if (!desc)
return 0;
chip = desc->chip;
offset = gpio_chip_hwgpio(desc);
value = chip->get ? chip->get(chip, offset) : 0;
@@ -2005,6 +2024,8 @@ static void gpiod_set_value_cansleep(struct gpio_desc *desc, int value)
struct gpio_chip *chip;
might_sleep_if(extra_checks);
if (!desc)
return;
chip = desc->chip;
trace_gpio_value(desc_to_gpio(desc), 0, value);
if (test_bit(FLAG_OPEN_DRAIN, &desc->flags))
drivers/isdn/hisax/st5481_usb.c
+10 -2
View File
@@ -294,13 +294,13 @@ int st5481_setup_usb(struct st5481_adapter *adapter)
// Allocate URBs and buffers for interrupt endpoint
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
return -ENOMEM;
goto err1;
}
intr->urb = urb;
buf = kmalloc(INT_PKT_SIZE, GFP_KERNEL);
if (!buf) {
return -ENOMEM;
goto err2;
}
endpoint = &altsetting->endpoint[EP_INT-1];
@@ -313,6 +313,14 @@ int st5481_setup_usb(struct st5481_adapter *adapter)
endpoint->desc.bInterval);
return 0;
err2:
usb_free_urb(intr->urb);
intr->urb = NULL;
err1:
usb_free_urb(ctrl->urb);
ctrl->urb = NULL;
return -ENOMEM;
}
/*

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