Commit 7bad2227 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-linus-3.20-1' of git://git.code.sf.net/p/openipmi/linux-ipmi

Pull IPMI driver updates from Corey Minyard:
 "Some minor fixes and cleanups, nothing big.

  In for-next for a while and I've done some extensive beating on the
  driver since I have it working in qemu and can do creatively cruel
  things to it"

* tag 'for-linus-3.20-1' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: Fix a memory ordering issue
  ipmi: Remove uses of return value of seq_printf
  ipmi: Use is_visible callback for conditional sysfs entries
  ipmi: Free ipmi_recv_msg messages from the linked list on close
  ipmi: avoid gcc warning
  ipmi: Update timespec usage to timespec64
  ipmi: Cleanup DEBUG_TIMING ifdef usage
  drivers:char:ipmi: Remove unneeded FIXME comment in the file,ipmi_si_intf.c
  char: ipmi: Remove obsolete cleanup for clientdata
  ipmi: Remove a FIXME for slab conversion
parents 3d883483 1d86e29b
......@@ -157,12 +157,16 @@ static int ipmi_release(struct inode *inode, struct file *file)
{
struct ipmi_file_private *priv = file->private_data;
int rv;
struct ipmi_recv_msg *msg, *next;
rv = ipmi_destroy_user(priv->user);
if (rv)
return rv;
/* FIXME - free the messages in the list. */
list_for_each_entry_safe(msg, next, &priv->recv_msgs, link)
ipmi_free_recv_msg(msg);
kfree(priv);
return 0;
......
......@@ -1483,14 +1483,10 @@ static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg,
smi_msg->msgid = msgid;
}
static void smi_send(ipmi_smi_t intf, struct ipmi_smi_handlers *handlers,
struct ipmi_smi_msg *smi_msg, int priority)
static struct ipmi_smi_msg *smi_add_send_msg(ipmi_smi_t intf,
struct ipmi_smi_msg *smi_msg,
int priority)
{
int run_to_completion = intf->run_to_completion;
unsigned long flags;
if (!run_to_completion)
spin_lock_irqsave(&intf->xmit_msgs_lock, flags);
if (intf->curr_msg) {
if (priority > 0)
list_add_tail(&smi_msg->link, &intf->hp_xmit_msgs);
......@@ -1500,8 +1496,25 @@ static void smi_send(ipmi_smi_t intf, struct ipmi_smi_handlers *handlers,
} else {
intf->curr_msg = smi_msg;
}
if (!run_to_completion)
return smi_msg;
}
static void smi_send(ipmi_smi_t intf, struct ipmi_smi_handlers *handlers,
struct ipmi_smi_msg *smi_msg, int priority)
{
int run_to_completion = intf->run_to_completion;
if (run_to_completion) {
smi_msg = smi_add_send_msg(intf, smi_msg, priority);
} else {
unsigned long flags;
spin_lock_irqsave(&intf->xmit_msgs_lock, flags);
smi_msg = smi_add_send_msg(intf, smi_msg, priority);
spin_unlock_irqrestore(&intf->xmit_msgs_lock, flags);
}
if (smi_msg)
handlers->sender(intf->send_info, smi_msg);
......@@ -1985,7 +1998,9 @@ static int smi_ipmb_proc_show(struct seq_file *m, void *v)
seq_printf(m, "%x", intf->channels[0].address);
for (i = 1; i < IPMI_MAX_CHANNELS; i++)
seq_printf(m, " %x", intf->channels[i].address);
return seq_putc(m, '\n');
seq_putc(m, '\n');
return seq_has_overflowed(m);
}
static int smi_ipmb_proc_open(struct inode *inode, struct file *file)
......@@ -2004,9 +2019,11 @@ static int smi_version_proc_show(struct seq_file *m, void *v)
{
ipmi_smi_t intf = m->private;
return seq_printf(m, "%u.%u\n",
ipmi_version_major(&intf->bmc->id),
ipmi_version_minor(&intf->bmc->id));
seq_printf(m, "%u.%u\n",
ipmi_version_major(&intf->bmc->id),
ipmi_version_minor(&intf->bmc->id));
return seq_has_overflowed(m);
}
static int smi_version_proc_open(struct inode *inode, struct file *file)
......@@ -2353,11 +2370,28 @@ static struct attribute *bmc_dev_attrs[] = {
&dev_attr_additional_device_support.attr,
&dev_attr_manufacturer_id.attr,
&dev_attr_product_id.attr,
&dev_attr_aux_firmware_revision.attr,
&dev_attr_guid.attr,
NULL
};
static umode_t bmc_dev_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int idx)
{
struct device *dev = kobj_to_dev(kobj);
struct bmc_device *bmc = to_bmc_device(dev);
umode_t mode = attr->mode;
if (attr == &dev_attr_aux_firmware_revision.attr)
return bmc->id.aux_firmware_revision_set ? mode : 0;
if (attr == &dev_attr_guid.attr)
return bmc->guid_set ? mode : 0;
return mode;
}
static struct attribute_group bmc_dev_attr_group = {
.attrs = bmc_dev_attrs,
.is_visible = bmc_dev_attr_is_visible,
};
static const struct attribute_group *bmc_dev_attr_groups[] = {
......@@ -2380,13 +2414,6 @@ cleanup_bmc_device(struct kref *ref)
{
struct bmc_device *bmc = container_of(ref, struct bmc_device, usecount);
if (bmc->id.aux_firmware_revision_set)
device_remove_file(&bmc->pdev.dev,
&dev_attr_aux_firmware_revision);
if (bmc->guid_set)
device_remove_file(&bmc->pdev.dev,
&dev_attr_guid);
platform_device_unregister(&bmc->pdev);
}
......@@ -2407,33 +2434,6 @@ static void ipmi_bmc_unregister(ipmi_smi_t intf)
mutex_unlock(&ipmidriver_mutex);
}
static int create_bmc_files(struct bmc_device *bmc)
{
int err;
if (bmc->id.aux_firmware_revision_set) {
err = device_create_file(&bmc->pdev.dev,
&dev_attr_aux_firmware_revision);
if (err)
goto out;
}
if (bmc->guid_set) {
err = device_create_file(&bmc->pdev.dev,
&dev_attr_guid);
if (err)
goto out_aux_firm;
}
return 0;
out_aux_firm:
if (bmc->id.aux_firmware_revision_set)
device_remove_file(&bmc->pdev.dev,
&dev_attr_aux_firmware_revision);
out:
return err;
}
static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum)
{
int rv;
......@@ -2522,15 +2522,6 @@ static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum)
return rv;
}
rv = create_bmc_files(bmc);
if (rv) {
mutex_lock(&ipmidriver_mutex);
platform_device_unregister(&bmc->pdev);
mutex_unlock(&ipmidriver_mutex);
return rv;
}
dev_info(intf->si_dev, "Found new BMC (man_id: 0x%6.6x, "
"prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
bmc->id.manufacturer_id,
......@@ -4212,7 +4203,6 @@ static void need_waiter(ipmi_smi_t intf)
static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0);
static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0);
/* FIXME - convert these to slabs. */
static void free_smi_msg(struct ipmi_smi_msg *msg)
{
atomic_dec(&smi_msg_inuse_count);
......
......@@ -321,6 +321,18 @@ static int try_smi_init(struct smi_info *smi);
static void cleanup_one_si(struct smi_info *to_clean);
static void cleanup_ipmi_si(void);
#ifdef DEBUG_TIMING
void debug_timestamp(char *msg)
{
struct timespec64 t;
getnstimeofday64(&t);
pr_debug("**%s: %lld.%9.9ld\n", msg, (long long) t.tv_sec, t.tv_nsec);
}
#else
#define debug_timestamp(x)
#endif
static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list);
static int register_xaction_notifier(struct notifier_block *nb)
{
......@@ -358,9 +370,6 @@ static void return_hosed_msg(struct smi_info *smi_info, int cCode)
static enum si_sm_result start_next_msg(struct smi_info *smi_info)
{
int rv;
#ifdef DEBUG_TIMING
struct timeval t;
#endif
if (!smi_info->waiting_msg) {
smi_info->curr_msg = NULL;
......@@ -370,10 +379,7 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info)
smi_info->curr_msg = smi_info->waiting_msg;
smi_info->waiting_msg = NULL;
#ifdef DEBUG_TIMING
do_gettimeofday(&t);
printk(KERN_DEBUG "**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
debug_timestamp("Start2");
err = atomic_notifier_call_chain(&xaction_notifier_list,
0, smi_info);
if (err & NOTIFY_STOP_MASK) {
......@@ -582,12 +588,8 @@ static void check_bt_irq(struct smi_info *smi_info, bool irq_on)
static void handle_transaction_done(struct smi_info *smi_info)
{
struct ipmi_smi_msg *msg;
#ifdef DEBUG_TIMING
struct timeval t;
do_gettimeofday(&t);
printk(KERN_DEBUG "**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
debug_timestamp("Done");
switch (smi_info->si_state) {
case SI_NORMAL:
if (!smi_info->curr_msg)
......@@ -929,24 +931,15 @@ static void sender(void *send_info,
struct smi_info *smi_info = send_info;
enum si_sm_result result;
unsigned long flags;
#ifdef DEBUG_TIMING
struct timeval t;
#endif
BUG_ON(smi_info->waiting_msg);
smi_info->waiting_msg = msg;
#ifdef DEBUG_TIMING
do_gettimeofday(&t);
printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
debug_timestamp("Enqueue");
if (smi_info->run_to_completion) {
/*
* If we are running to completion, start it and run
* transactions until everything is clear.
*/
smi_info->curr_msg = smi_info->waiting_msg;
smi_info->curr_msg = msg;
smi_info->waiting_msg = NULL;
/*
......@@ -964,6 +957,15 @@ static void sender(void *send_info,
}
spin_lock_irqsave(&smi_info->si_lock, flags);
/*
* The following two lines don't need to be under the lock for
* the lock's sake, but they do need SMP memory barriers to
* avoid getting things out of order. We are already claiming
* the lock, anyway, so just do it under the lock to avoid the
* ordering problem.
*/
BUG_ON(smi_info->waiting_msg);
smi_info->waiting_msg = msg;
check_start_timer_thread(smi_info);
spin_unlock_irqrestore(&smi_info->si_lock, flags);
}
......@@ -989,18 +991,18 @@ static void set_run_to_completion(void *send_info, bool i_run_to_completion)
* we are spinning in kipmid looking for something and not delaying
* between checks
*/
static inline void ipmi_si_set_not_busy(struct timespec *ts)
static inline void ipmi_si_set_not_busy(struct timespec64 *ts)
{
ts->tv_nsec = -1;
}
static inline int ipmi_si_is_busy(struct timespec *ts)
static inline int ipmi_si_is_busy(struct timespec64 *ts)
{
return ts->tv_nsec != -1;
}
static inline int ipmi_thread_busy_wait(enum si_sm_result smi_result,
const struct smi_info *smi_info,
struct timespec *busy_until)
struct timespec64 *busy_until)
{
unsigned int max_busy_us = 0;
......@@ -1009,12 +1011,13 @@ static inline int ipmi_thread_busy_wait(enum si_sm_result smi_result,
if (max_busy_us == 0 || smi_result != SI_SM_CALL_WITH_DELAY)
ipmi_si_set_not_busy(busy_until);
else if (!ipmi_si_is_busy(busy_until)) {
getnstimeofday(busy_until);
timespec_add_ns(busy_until, max_busy_us*NSEC_PER_USEC);
getnstimeofday64(busy_until);
timespec64_add_ns(busy_until, max_busy_us*NSEC_PER_USEC);
} else {
struct timespec now;
getnstimeofday(&now);
if (unlikely(timespec_compare(&now, busy_until) > 0)) {
struct timespec64 now;
getnstimeofday64(&now);
if (unlikely(timespec64_compare(&now, busy_until) > 0)) {
ipmi_si_set_not_busy(busy_until);
return 0;
}
......@@ -1037,7 +1040,7 @@ static int ipmi_thread(void *data)
struct smi_info *smi_info = data;
unsigned long flags;
enum si_sm_result smi_result;
struct timespec busy_until;
struct timespec64 busy_until;
ipmi_si_set_not_busy(&busy_until);
set_user_nice(current, MAX_NICE);
......@@ -1128,15 +1131,10 @@ static void smi_timeout(unsigned long data)
unsigned long jiffies_now;
long time_diff;
long timeout;
#ifdef DEBUG_TIMING
struct timeval t;
#endif
spin_lock_irqsave(&(smi_info->si_lock), flags);
#ifdef DEBUG_TIMING
do_gettimeofday(&t);
printk(KERN_DEBUG "**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
debug_timestamp("Timer");
jiffies_now = jiffies;
time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies)
* SI_USEC_PER_JIFFY);
......@@ -1173,18 +1171,13 @@ static irqreturn_t si_irq_handler(int irq, void *data)
{
struct smi_info *smi_info = data;
unsigned long flags;
#ifdef DEBUG_TIMING
struct timeval t;
#endif
spin_lock_irqsave(&(smi_info->si_lock), flags);
smi_inc_stat(smi_info, interrupts);
#ifdef DEBUG_TIMING
do_gettimeofday(&t);
printk(KERN_DEBUG "**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
debug_timestamp("Interrupt");
smi_event_handler(smi_info, 0);
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
return IRQ_HANDLED;
......@@ -2038,18 +2031,13 @@ static u32 ipmi_acpi_gpe(acpi_handle gpe_device,
{
struct smi_info *smi_info = context;
unsigned long flags;
#ifdef DEBUG_TIMING
struct timeval t;
#endif
spin_lock_irqsave(&(smi_info->si_lock), flags);
smi_inc_stat(smi_info, interrupts);
#ifdef DEBUG_TIMING
do_gettimeofday(&t);
printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
debug_timestamp("ACPI_GPE");
smi_event_handler(smi_info, 0);
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
......@@ -2071,7 +2059,6 @@ static int acpi_gpe_irq_setup(struct smi_info *info)
if (!info->irq)
return 0;
/* FIXME - is level triggered right? */
status = acpi_install_gpe_handler(NULL,
info->irq,
ACPI_GPE_LEVEL_TRIGGERED,
......@@ -2998,7 +2985,9 @@ static int smi_type_proc_show(struct seq_file *m, void *v)
{
struct smi_info *smi = m->private;
return seq_printf(m, "%s\n", si_to_str[smi->si_type]);
seq_printf(m, "%s\n", si_to_str[smi->si_type]);
return seq_has_overflowed(m);
}
static int smi_type_proc_open(struct inode *inode, struct file *file)
......@@ -3060,16 +3049,18 @@ static int smi_params_proc_show(struct seq_file *m, void *v)
{
struct smi_info *smi = m->private;
return seq_printf(m,
"%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n",
si_to_str[smi->si_type],
addr_space_to_str[smi->io.addr_type],
smi->io.addr_data,
smi->io.regspacing,
smi->io.regsize,
smi->io.regshift,
smi->irq,
smi->slave_addr);
seq_printf(m,
"%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n",
si_to_str[smi->si_type],
addr_space_to_str[smi->io.addr_type],
smi->io.addr_data,
smi->io.regspacing,
smi->io.regsize,
smi->io.regshift,
smi->irq,
smi->slave_addr);
return seq_has_overflowed(m);
}
static int smi_params_proc_open(struct inode *inode, struct file *file)
......
......@@ -1097,8 +1097,6 @@ static int ssif_remove(struct i2c_client *client)
if (!ssif_info)
return 0;
i2c_set_clientdata(client, NULL);
/*
* After this point, we won't deliver anything asychronously
* to the message handler. We can unregister ourself.
......@@ -1198,7 +1196,9 @@ static int ssif_detect(struct i2c_client *client, struct i2c_board_info *info)
static int smi_type_proc_show(struct seq_file *m, void *v)
{
return seq_puts(m, "ssif\n");
seq_puts(m, "ssif\n");
return seq_has_overflowed(m);
}
static int smi_type_proc_open(struct inode *inode, struct file *file)
......
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