diff options
Diffstat (limited to 'drivers')
29 files changed, 254 insertions, 88 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 0346e46e2871..ecca4ae248e0 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -33,6 +33,9 @@ static struct kset *system_kset; #define to_drv_attr(_attr) container_of(_attr, struct driver_attribute, attr) +#define DRIVER_ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) \ + struct driver_attribute driver_attr_##_name = \ + __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) static int __must_check bus_rescan_devices_helper(struct device *dev, void *data); @@ -198,7 +201,7 @@ static ssize_t unbind_store(struct device_driver *drv, const char *buf, bus_put(bus); return err; } -static DRIVER_ATTR_WO(unbind); +static DRIVER_ATTR_IGNORE_LOCKDEP(unbind, S_IWUSR, NULL, unbind_store); /* * Manually attach a device to a driver. @@ -234,7 +237,7 @@ static ssize_t bind_store(struct device_driver *drv, const char *buf, bus_put(bus); return err; } -static DRIVER_ATTR_WO(bind); +static DRIVER_ATTR_IGNORE_LOCKDEP(bind, S_IWUSR, NULL, bind_store); static ssize_t show_drivers_autoprobe(struct bus_type *bus, char *buf) { diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 7eac581912f0..599e31899a5d 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -81,7 +81,7 @@ #include <asm/uaccess.h> static DEFINE_IDR(loop_index_idr); -static DEFINE_MUTEX(loop_index_mutex); +static DEFINE_MUTEX(loop_ctl_mutex); static int max_part; static int part_shift; @@ -1044,7 +1044,7 @@ static int loop_clr_fd(struct loop_device *lo) */ if (atomic_read(&lo->lo_refcnt) > 1) { lo->lo_flags |= LO_FLAGS_AUTOCLEAR; - mutex_unlock(&lo->lo_ctl_mutex); + mutex_unlock(&loop_ctl_mutex); return 0; } @@ -1094,12 +1094,12 @@ static int loop_clr_fd(struct loop_device *lo) if (!part_shift) lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN; loop_unprepare_queue(lo); - mutex_unlock(&lo->lo_ctl_mutex); + mutex_unlock(&loop_ctl_mutex); /* - * Need not hold lo_ctl_mutex to fput backing file. - * Calling fput holding lo_ctl_mutex triggers a circular + * Need not hold loop_ctl_mutex to fput backing file. + * Calling fput holding loop_ctl_mutex triggers a circular * lock dependency possibility warning as fput can take - * bd_mutex which is usually taken before lo_ctl_mutex. + * bd_mutex which is usually taken before loop_ctl_mutex. */ fput(filp); return 0; @@ -1121,6 +1121,12 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info) if ((unsigned int) info->lo_encrypt_key_size > LO_KEY_SIZE) return -EINVAL; + if (lo->lo_offset != info->lo_offset || + lo->lo_sizelimit != info->lo_sizelimit) { + sync_blockdev(lo->lo_device); + kill_bdev(lo->lo_device); + } + /* I/O need to be drained during transfer transition */ blk_mq_freeze_queue(lo->lo_queue); @@ -1148,11 +1154,20 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info) goto exit; if (lo->lo_offset != info->lo_offset || - lo->lo_sizelimit != info->lo_sizelimit) + lo->lo_sizelimit != info->lo_sizelimit) { + /* kill_bdev should have truncated all the pages */ + if (lo->lo_device->bd_inode->i_mapping->nrpages) { + err = -EAGAIN; + pr_warn("%s: loop%d (%s) has still dirty pages (nrpages=%lu)\n", + __func__, lo->lo_number, lo->lo_file_name, + lo->lo_device->bd_inode->i_mapping->nrpages); + goto exit; + } if (figure_loop_size(lo, info->lo_offset, info->lo_sizelimit)) { err = -EFBIG; goto exit; } + } loop_config_discard(lo); @@ -1358,20 +1373,37 @@ static int loop_set_dio(struct loop_device *lo, unsigned long arg) static int loop_set_block_size(struct loop_device *lo, unsigned long arg) { + int err = 0; + if (lo->lo_state != Lo_bound) return -ENXIO; if (arg < 512 || arg > PAGE_SIZE || !is_power_of_2(arg)) return -EINVAL; + if (lo->lo_queue->limits.logical_block_size != arg) { + sync_blockdev(lo->lo_device); + kill_bdev(lo->lo_device); + } + blk_mq_freeze_queue(lo->lo_queue); + /* kill_bdev should have truncated all the pages */ + if (lo->lo_queue->limits.logical_block_size != arg && + lo->lo_device->bd_inode->i_mapping->nrpages) { + err = -EAGAIN; + pr_warn("%s: loop%d (%s) has still dirty pages (nrpages=%lu)\n", + __func__, lo->lo_number, lo->lo_file_name, + lo->lo_device->bd_inode->i_mapping->nrpages); + goto out_unfreeze; + } + blk_queue_logical_block_size(lo->lo_queue, arg); loop_update_dio(lo); - +out_unfreeze: blk_mq_unfreeze_queue(lo->lo_queue); - return 0; + return err; } static int lo_ioctl(struct block_device *bdev, fmode_t mode, @@ -1380,7 +1412,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode, struct loop_device *lo = bdev->bd_disk->private_data; int err; - mutex_lock_nested(&lo->lo_ctl_mutex, 1); + mutex_lock_nested(&loop_ctl_mutex, 1); switch (cmd) { case LOOP_SET_FD: err = loop_set_fd(lo, mode, bdev, arg); @@ -1389,7 +1421,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode, err = loop_change_fd(lo, bdev, arg); break; case LOOP_CLR_FD: - /* loop_clr_fd would have unlocked lo_ctl_mutex on success */ + /* loop_clr_fd would have unlocked loop_ctl_mutex on success */ err = loop_clr_fd(lo); if (!err) goto out_unlocked; @@ -1430,7 +1462,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode, default: err = lo->ioctl ? lo->ioctl(lo, cmd, arg) : -EINVAL; } - mutex_unlock(&lo->lo_ctl_mutex); + mutex_unlock(&loop_ctl_mutex); out_unlocked: return err; @@ -1563,16 +1595,16 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode, switch(cmd) { case LOOP_SET_STATUS: - mutex_lock(&lo->lo_ctl_mutex); + mutex_lock(&loop_ctl_mutex); err = loop_set_status_compat( lo, (const struct compat_loop_info __user *) arg); - mutex_unlock(&lo->lo_ctl_mutex); + mutex_unlock(&loop_ctl_mutex); break; case LOOP_GET_STATUS: - mutex_lock(&lo->lo_ctl_mutex); + mutex_lock(&loop_ctl_mutex); err = loop_get_status_compat( lo, (struct compat_loop_info __user *) arg); - mutex_unlock(&lo->lo_ctl_mutex); + mutex_unlock(&loop_ctl_mutex); break; case LOOP_SET_CAPACITY: case LOOP_CLR_FD: @@ -1595,9 +1627,11 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode, static int lo_open(struct block_device *bdev, fmode_t mode) { struct loop_device *lo; - int err = 0; + int err; - mutex_lock(&loop_index_mutex); + err = mutex_lock_killable(&loop_ctl_mutex); + if (err) + return err; lo = bdev->bd_disk->private_data; if (!lo) { err = -ENXIO; @@ -1606,18 +1640,20 @@ static int lo_open(struct block_device *bdev, fmode_t mode) atomic_inc(&lo->lo_refcnt); out: - mutex_unlock(&loop_index_mutex); + mutex_unlock(&loop_ctl_mutex); return err; } -static void __lo_release(struct loop_device *lo) +static void lo_release(struct gendisk *disk, fmode_t mode) { + struct loop_device *lo; int err; + mutex_lock(&loop_ctl_mutex); + lo = disk->private_data; if (atomic_dec_return(&lo->lo_refcnt)) - return; + goto out_unlock; - mutex_lock(&lo->lo_ctl_mutex); if (lo->lo_flags & LO_FLAGS_AUTOCLEAR) { /* * In autoclear mode, stop the loop thread @@ -1634,14 +1670,8 @@ static void __lo_release(struct loop_device *lo) loop_flush(lo); } - mutex_unlock(&lo->lo_ctl_mutex); -} - -static void lo_release(struct gendisk *disk, fmode_t mode) -{ - mutex_lock(&loop_index_mutex); - __lo_release(disk->private_data); - mutex_unlock(&loop_index_mutex); +out_unlock: + mutex_unlock(&loop_ctl_mutex); } static const struct block_device_operations lo_fops = { @@ -1680,10 +1710,10 @@ static int unregister_transfer_cb(int id, void *ptr, void *data) struct loop_device *lo = ptr; struct loop_func_table *xfer = data; - mutex_lock(&lo->lo_ctl_mutex); + mutex_lock(&loop_ctl_mutex); if (lo->lo_encryption == xfer) loop_release_xfer(lo); - mutex_unlock(&lo->lo_ctl_mutex); + mutex_unlock(&loop_ctl_mutex); return 0; } @@ -1846,7 +1876,6 @@ static int loop_add(struct loop_device **l, int i) if (!part_shift) disk->flags |= GENHD_FL_NO_PART_SCAN; disk->flags |= GENHD_FL_EXT_DEVT; - mutex_init(&lo->lo_ctl_mutex); atomic_set(&lo->lo_refcnt, 0); lo->lo_number = i; spin_lock_init(&lo->lo_lock); @@ -1925,7 +1954,7 @@ static struct kobject *loop_probe(dev_t dev, int *part, void *data) struct kobject *kobj; int err; - mutex_lock(&loop_index_mutex); + mutex_lock(&loop_ctl_mutex); err = loop_lookup(&lo, MINOR(dev) >> part_shift); if (err < 0) err = loop_add(&lo, MINOR(dev) >> part_shift); @@ -1933,7 +1962,7 @@ static struct kobject *loop_probe(dev_t dev, int *part, void *data) kobj = NULL; else kobj = get_disk(lo->lo_disk); - mutex_unlock(&loop_index_mutex); + mutex_unlock(&loop_ctl_mutex); *part = 0; return kobj; @@ -1943,9 +1972,13 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd, unsigned long parm) { struct loop_device *lo; - int ret = -ENOSYS; + int ret; + + ret = mutex_lock_killable(&loop_ctl_mutex); + if (ret) + return ret; - mutex_lock(&loop_index_mutex); + ret = -ENOSYS; switch (cmd) { case LOOP_CTL_ADD: ret = loop_lookup(&lo, parm); @@ -1959,19 +1992,15 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd, ret = loop_lookup(&lo, parm); if (ret < 0) break; - mutex_lock(&lo->lo_ctl_mutex); if (lo->lo_state != Lo_unbound) { ret = -EBUSY; - mutex_unlock(&lo->lo_ctl_mutex); break; } if (atomic_read(&lo->lo_refcnt) > 0) { ret = -EBUSY; - mutex_unlock(&lo->lo_ctl_mutex); break; } lo->lo_disk->private_data = NULL; - mutex_unlock(&lo->lo_ctl_mutex); idr_remove(&loop_index_idr, lo->lo_number); loop_remove(lo); break; @@ -1981,7 +2010,7 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd, break; ret = loop_add(&lo, -1); } - mutex_unlock(&loop_index_mutex); + mutex_unlock(&loop_ctl_mutex); return ret; } @@ -2064,10 +2093,10 @@ static int __init loop_init(void) THIS_MODULE, loop_probe, NULL, NULL); /* pre-create number of devices given by config or max_loop */ - mutex_lock(&loop_index_mutex); + mutex_lock(&loop_ctl_mutex); for (i = 0; i < nr; i++) loop_add(&lo, i); - mutex_unlock(&loop_index_mutex); + mutex_unlock(&loop_ctl_mutex); printk(KERN_INFO "loop: module loaded\n"); return 0; diff --git a/drivers/block/loop.h b/drivers/block/loop.h index 60f0fd2c0c65..a923e74495ce 100644 --- a/drivers/block/loop.h +++ b/drivers/block/loop.h @@ -55,7 +55,6 @@ struct loop_device { spinlock_t lo_lock; int lo_state; - struct mutex lo_ctl_mutex; struct kthread_worker worker; struct task_struct *worker_task; bool use_dio; diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c index 7a2e23d6bfdd..b2da2382d544 100644 --- a/drivers/char/ipmi/ipmi_ssif.c +++ b/drivers/char/ipmi/ipmi_ssif.c @@ -637,8 +637,9 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, /* Remove the multi-part read marker. */ len -= 2; + data += 2; for (i = 0; i < len; i++) - ssif_info->data[i] = data[i+2]; + ssif_info->data[i] = data[i]; ssif_info->multi_len = len; ssif_info->multi_pos = 1; @@ -666,8 +667,19 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, } blocknum = data[0]; + len--; + data++; + + if (blocknum != 0xff && len != 31) { + /* All blocks but the last must have 31 data bytes. */ + result = -EIO; + if (ssif_info->ssif_debug & SSIF_DEBUG_MSG) + pr_info("Received middle message <31\n"); - if (ssif_info->multi_len + len - 1 > IPMI_MAX_MSG_LENGTH) { + goto continue_op; + } + + if (ssif_info->multi_len + len > IPMI_MAX_MSG_LENGTH) { /* Received message too big, abort the operation. */ result = -E2BIG; if (ssif_info->ssif_debug & SSIF_DEBUG_MSG) @@ -676,16 +688,14 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, goto continue_op; } - /* Remove the blocknum from the data. */ - len--; for (i = 0; i < len; i++) - ssif_info->data[i + ssif_info->multi_len] = data[i + 1]; + ssif_info->data[i + ssif_info->multi_len] = data[i]; ssif_info->multi_len += len; if (blocknum == 0xff) { /* End of read */ len = ssif_info->multi_len; data = ssif_info->data; - } else if (blocknum + 1 != ssif_info->multi_pos) { + } else if (blocknum != ssif_info->multi_pos) { /* * Out of sequence block, just abort. Block * numbers start at zero for the second block, @@ -713,6 +723,7 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, } } + continue_op: if (result < 0) { ssif_inc_stat(ssif_info, receive_errors); } else { @@ -720,8 +731,6 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, ssif_inc_stat(ssif_info, received_message_parts); } - - continue_op: if (ssif_info->ssif_debug & SSIF_DEBUG_STATE) pr_info(PFX "DONE 1: state = %d, result=%d.\n", ssif_info->ssif_state, result); diff --git a/drivers/clk/imx/clk-imx6q.c b/drivers/clk/imx/clk-imx6q.c index a0df83e6b84b..46c05c9a9354 100644 --- a/drivers/clk/imx/clk-imx6q.c +++ b/drivers/clk/imx/clk-imx6q.c @@ -239,8 +239,12 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) * lvds1_gate and lvds2_gate are pseudo-gates. Both can be * independently configured as clock inputs or outputs. We treat * the "output_enable" bit as a gate, even though it's really just - * enabling clock output. + * enabling clock output. Initially the gate bits are cleared, as + * otherwise the exclusive configuration gets locked in the setup done + * by software running before the clock driver, with no way to change + * it. */ + writel(readl(base + 0x160) & ~0x3c00, base + 0x160); clk[IMX6QDL_CLK_LVDS1_GATE] = imx_clk_gate_exclusive("lvds1_gate", "lvds1_sel", base + 0x160, 10, BIT(12)); clk[IMX6QDL_CLK_LVDS2_GATE] = imx_clk_gate_exclusive("lvds2_gate", "lvds2_sel", base + 0x160, 11, BIT(13)); diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c index 07135e009d8b..601a6c3acc7f 100644 --- a/drivers/cpuidle/cpuidle-pseries.c +++ b/drivers/cpuidle/cpuidle-pseries.c @@ -240,7 +240,13 @@ static int pseries_idle_probe(void) return -ENODEV; if (firmware_has_feature(FW_FEATURE_SPLPAR)) { - if (lppaca_shared_proc(get_lppaca())) { + /* + * Use local_paca instead of get_lppaca() since + * preemption is not disabled, and it is not required in + * fact, since lppaca_ptr does not need to be the value + * associated to the current CPU, it can be from any CPU. + */ + if (lppaca_shared_proc(local_paca->lppaca_ptr)) { cpuidle_state_table = shared_states; max_idle_state = ARRAY_SIZE(shared_states); } else { diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 5ad036741b99..e449f22c8f29 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1109,9 +1109,14 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, struct drm_framebuffer *fb = fb_helper->fb; int depth; - if (var->pixclock != 0 || in_dbg_master()) + if (in_dbg_master()) return -EINVAL; + if (var->pixclock != 0) { + DRM_DEBUG("fbdev emulation doesn't support changing the pixel clock, value of pixclock is ignored\n"); + var->pixclock = 0; + } + /* Need to resize the fb object !!! */ if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height || diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c index 54c308e6704f..04248394843e 100644 --- a/drivers/md/dm-kcopyd.c +++ b/drivers/md/dm-kcopyd.c @@ -55,15 +55,17 @@ struct dm_kcopyd_client { struct dm_kcopyd_throttle *throttle; /* - * We maintain three lists of jobs: + * We maintain four lists of jobs: * * i) jobs waiting for pages * ii) jobs that have pages, and are waiting for the io to be issued. - * iii) jobs that have completed. + * iii) jobs that don't need to do any IO and just run a callback + * iv) jobs that have completed. * - * All three of these are protected by job_lock. + * All four of these are protected by job_lock. */ spinlock_t job_lock; + struct list_head callback_jobs; struct list_head complete_jobs; struct list_head io_jobs; struct list_head pages_jobs; @@ -583,6 +585,7 @@ static void do_work(struct work_struct *work) struct dm_kcopyd_client *kc = container_of(work, struct dm_kcopyd_client, kcopyd_work); struct blk_plug plug; + unsigned long flags; /* * The order that these are called is *very* important. @@ -591,6 +594,10 @@ static void do_work(struct work_struct *work) * list. io jobs call wake when they complete and it all * starts again. */ + spin_lock_irqsave(&kc->job_lock, flags); + list_splice_tail_init(&kc->callback_jobs, &kc->complete_jobs); + spin_unlock_irqrestore(&kc->job_lock, flags); + blk_start_plug(&plug); process_jobs(&kc->complete_jobs, kc, run_complete_job); process_jobs(&kc->pages_jobs, kc, run_pages_job); @@ -608,7 +615,7 @@ static void dispatch_job(struct kcopyd_job *job) struct dm_kcopyd_client *kc = job->kc; atomic_inc(&kc->nr_jobs); if (unlikely(!job->source.count)) - push(&kc->complete_jobs, job); + push(&kc->callback_jobs, job); else if (job->pages == &zero_page_list) push(&kc->io_jobs, job); else @@ -795,7 +802,7 @@ void dm_kcopyd_do_callback(void *j, int read_err, unsigned long write_err) job->read_err = read_err; job->write_err = write_err; - push(&kc->complete_jobs, job); + push(&kc->callback_jobs, job); wake(kc); } EXPORT_SYMBOL(dm_kcopyd_do_callback); @@ -825,6 +832,7 @@ struct dm_kcopyd_client *dm_kcopyd_client_create(struct dm_kcopyd_throttle *thro return ERR_PTR(-ENOMEM); spin_lock_init(&kc->job_lock); + INIT_LIST_HEAD(&kc->callback_jobs); INIT_LIST_HEAD(&kc->complete_jobs); INIT_LIST_HEAD(&kc->io_jobs); INIT_LIST_HEAD(&kc->pages_jobs); @@ -874,6 +882,7 @@ void dm_kcopyd_client_destroy(struct dm_kcopyd_client *kc) /* Wait for completion of all jobs submitted by this client. */ wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs)); + BUG_ON(!list_empty(&kc->callback_jobs)); BUG_ON(!list_empty(&kc->complete_jobs)); BUG_ON(!list_empty(&kc->io_jobs)); BUG_ON(!list_empty(&kc->pages_jobs)); diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index e4d1bafe78c1..2a855e5429ab 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -19,6 +19,7 @@ #include <linux/vmalloc.h> #include <linux/log2.h> #include <linux/dm-kcopyd.h> +#include <linux/semaphore.h> #include "dm.h" @@ -105,6 +106,9 @@ struct dm_snapshot { /* The on disk metadata handler */ struct dm_exception_store *store; + /* Maximum number of in-flight COW jobs. */ + struct semaphore cow_count; + struct dm_kcopyd_client *kcopyd_client; /* Wait for events based on state_bits */ @@ -145,6 +149,19 @@ struct dm_snapshot { #define RUNNING_MERGE 0 #define SHUTDOWN_MERGE 1 +/* + * Maximum number of chunks being copied on write. + * + * The value was decided experimentally as a trade-off between memory + * consumption, stalling the kernel's workqueues and maintaining a high enough + * throughput. + */ +#define DEFAULT_COW_THRESHOLD 2048 + +static int cow_threshold = DEFAULT_COW_THRESHOLD; +module_param_named(snapshot_cow_threshold, cow_threshold, int, 0644); +MODULE_PARM_DESC(snapshot_cow_threshold, "Maximum number of chunks being copied on write"); + DECLARE_DM_KCOPYD_THROTTLE_WITH_MODULE_PARM(snapshot_copy_throttle, "A percentage of time allocated for copy on write"); @@ -1189,6 +1206,8 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv) goto bad_hash_tables; } + sema_init(&s->cow_count, (cow_threshold > 0) ? cow_threshold : INT_MAX); + s->kcopyd_client = dm_kcopyd_client_create(&dm_kcopyd_throttle); if (IS_ERR(s->kcopyd_client)) { r = PTR_ERR(s->kcopyd_client); @@ -1560,6 +1579,7 @@ static void copy_callback(int read_err, unsigned long write_err, void *context) } list_add(&pe->out_of_order_entry, lh); } + up(&s->cow_count); } /* @@ -1583,6 +1603,7 @@ static void start_copy(struct dm_snap_pending_exception *pe) dest.count = src.count; /* Hand over to kcopyd */ + down(&s->cow_count); dm_kcopyd_copy(s->kcopyd_client, &src, 1, &dest, 0, copy_callback, pe); } @@ -1602,6 +1623,7 @@ static void start_full_bio(struct dm_snap_pending_exception *pe, pe->full_bio = bio; pe->full_bio_end_io = bio->bi_end_io; + down(&s->cow_count); callback_data = dm_kcopyd_prepare_callback(s->kcopyd_client, copy_callback, pe); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 48b09dedd0fb..52f261381b0c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1542,6 +1542,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, smp_mb(); if (dm_table_request_based(t)) queue_flag_set_unlocked(QUEUE_FLAG_STACKABLE, q); + + /* io_pages is used for readahead */ + q->backing_dev_info->io_pages = limits->max_sectors >> (PAGE_SHIFT - 9); } unsigned int dm_table_get_num_targets(struct dm_table *t) diff --git a/drivers/media/firewire/firedtv-avc.c b/drivers/media/firewire/firedtv-avc.c index 251a556112a9..280b5ffea592 100644 --- a/drivers/media/firewire/firedtv-avc.c +++ b/drivers/media/firewire/firedtv-avc.c @@ -968,7 +968,8 @@ static int get_ca_object_length(struct avc_response_frame *r) return r->operand[7]; } -int avc_ca_app_info(struct firedtv *fdtv, char *app_info, unsigned int *len) +int avc_ca_app_info(struct firedtv *fdtv, unsigned char *app_info, + unsigned int *len) { struct avc_command_frame *c = (void *)fdtv->avc_data; struct avc_response_frame *r = (void *)fdtv->avc_data; @@ -1009,7 +1010,8 @@ out: return ret; } -int avc_ca_info(struct firedtv *fdtv, char *app_info, unsigned int *len) +int avc_ca_info(struct firedtv *fdtv, unsigned char *app_info, + unsigned int *len) { struct avc_command_frame *c = (void *)fdtv->avc_data; struct avc_response_frame *r = (void *)fdtv->avc_data; diff --git a/drivers/media/firewire/firedtv.h b/drivers/media/firewire/firedtv.h index 345d1eda8c05..5b18a08c6285 100644 --- a/drivers/media/firewire/firedtv.h +++ b/drivers/media/firewire/firedtv.h @@ -124,8 +124,10 @@ int avc_lnb_control(struct firedtv *fdtv, char voltage, char burst, struct dvb_diseqc_master_cmd *diseqcmd); void avc_remote_ctrl_work(struct work_struct *work); int avc_register_remote_control(struct firedtv *fdtv); -int avc_ca_app_info(struct firedtv *fdtv, char *app_info, unsigned int *len); -int avc_ca_info(struct firedtv *fdtv, char *app_info, unsigned int *len); +int avc_ca_app_info(struct firedtv *fdtv, unsigned char *app_info, + unsigned int *len); +int avc_ca_info(struct firedtv *fdtv, unsigned char *app_info, + unsigned int *len); int avc_ca_reset(struct firedtv *fdtv); int avc_ca_pmt(struct firedtv *fdtv, char *app_info, int length); int avc_ca_get_time_date(struct firedtv *fdtv, int *interval); diff --git a/drivers/media/platform/vivid/vivid-kthread-cap.c b/drivers/media/platform/vivid/vivid-kthread-cap.c index 83cc6d3b4784..81ba454a6d95 100644 --- a/drivers/media/platform/vivid/vivid-kthread-cap.c +++ b/drivers/media/platform/vivid/vivid-kthread-cap.c @@ -863,8 +863,11 @@ int vivid_start_generating_vid_cap(struct vivid_dev *dev, bool *pstreaming) "%s-vid-cap", dev->v4l2_dev.name); if (IS_ERR(dev->kthread_vid_cap)) { + int err = PTR_ERR(dev->kthread_vid_cap); + + dev->kthread_vid_cap = NULL; v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); - return PTR_ERR(dev->kthread_vid_cap); + return err; } *pstreaming = true; vivid_grab_controls(dev, true); diff --git a/drivers/media/platform/vivid/vivid-kthread-out.c b/drivers/media/platform/vivid/vivid-kthread-out.c index c2c46dcdbe95..2c5dbdcb576a 100644 --- a/drivers/media/platform/vivid/vivid-kthread-out.c +++ b/drivers/media/platform/vivid/vivid-kthread-out.c @@ -248,8 +248,11 @@ int vivid_start_generating_vid_out(struct vivid_dev *dev, bool *pstreaming) "%s-vid-out", dev->v4l2_dev.name); if (IS_ERR(dev->kthread_vid_out)) { + int err = PTR_ERR(dev->kthread_vid_out); + + dev->kthread_vid_out = NULL; v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); - return PTR_ERR(dev->kthread_vid_out); + return err; } *pstreaming = true; vivid_grab_controls(dev, true); diff --git a/drivers/media/platform/vivid/vivid-vid-common.c b/drivers/media/platform/vivid/vivid-vid-common.c index 1678b730dba2..2e82f520a869 100644 --- a/drivers/media/platform/vivid/vivid-vid-common.c +++ b/drivers/media/platform/vivid/vivid-vid-common.c @@ -33,7 +33,7 @@ const struct v4l2_dv_timings_cap vivid_dv_timings_cap = { .type = V4L2_DV_BT_656_1120, /* keep this initialization for compatibility with GCC < 4.4.6 */ .reserved = { 0 }, - V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 14000000, 775000000, + V4L2_INIT_BT_TIMINGS(16, MAX_WIDTH, 16, MAX_HEIGHT, 14000000, 775000000, V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF, V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED) diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index 6cfcdcea27e0..873948e429e8 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -930,6 +930,8 @@ int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count) em28xx_videodbg("%s\n", __func__); + dev->v4l2->field_count = 0; + /* Make sure streaming is not already in progress for this type of filehandle (e.g. video, vbi) */ rc = res_get(dev, vq->type); @@ -1149,8 +1151,6 @@ static void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) { struct em28xx *dev = priv; - dev->v4l2->field_count = 0; - /* * In the case of non-AC97 volume controls, we still need * to do some setups at em28xx, in order to mute/unmute diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 8ce9c63dfc59..e0041fcfa783 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1976,9 +1976,13 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma) return -EINVAL; } } + + mutex_lock(&q->mmap_lock); + if (vb2_fileio_is_active(q)) { dprintk(1, "mmap: file io in progress\n"); - return -EBUSY; + ret = -EBUSY; + goto unlock; } /* @@ -1986,7 +1990,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma) */ ret = __find_plane_by_offset(q, off, &buffer, &plane); if (ret) - return ret; + goto unlock; vb = q->bufs[buffer]; @@ -1999,11 +2003,13 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma) if (length < (vma->vm_end - vma->vm_start)) { dprintk(1, "MMAP invalid, as it would overflow buffer length\n"); - return -EINVAL; + ret = -EINVAL; + goto unlock; } - mutex_lock(&q->mmap_lock); ret = call_memop(vb, mmap, vb->planes[plane].mem_priv, vma); + +unlock: mutex_unlock(&q->mmap_lock); if (ret) return ret; diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 5628a6b5b19b..c5c320efc7b4 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -594,6 +594,29 @@ static int tps6586x_i2c_remove(struct i2c_client *client) return 0; } +static int __maybe_unused tps6586x_i2c_suspend(struct device *dev) +{ + struct tps6586x *tps6586x = dev_get_drvdata(dev); + + if (tps6586x->client->irq) + disable_irq(tps6586x->client->irq); + + return 0; +} + +static int __maybe_unused tps6586x_i2c_resume(struct device *dev) +{ + struct tps6586x *tps6586x = dev_get_drvdata(dev); + + if (tps6586x->client->irq) + enable_irq(tps6586x->client->irq); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(tps6586x_pm_ops, tps6586x_i2c_suspend, + tps6586x_i2c_resume); + static const struct i2c_device_id tps6586x_id_table[] = { { "tps6586x", 0 }, { }, @@ -604,6 +627,7 @@ static struct i2c_driver tps6586x_driver = { .driver = { .name = "tps6586x", .of_match_table = of_match_ptr(tps6586x_of_match), + .pm = &tps6586x_pm_ops, }, .probe = tps6586x_i2c_probe, .remove = tps6586x_i2c_remove, diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index bf62e429f7fc..98be9eb3184b 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -1840,13 +1840,14 @@ static void atmci_tasklet_func(unsigned long priv) } atmci_request_end(host, host->mrq); - state = STATE_IDLE; + goto unlock; /* atmci_request_end() sets host->state */ break; } } while (state != prev_state); host->state = state; +unlock: spin_unlock(&host->lock); } diff --git a/drivers/net/ethernet/intel/e1000e/ptp.c b/drivers/net/ethernet/intel/e1000e/ptp.c index 25a0ad5102d6..855cf8c15c8a 100644 --- a/drivers/net/ethernet/intel/e1000e/ptp.c +++ b/drivers/net/ethernet/intel/e1000e/ptp.c @@ -111,10 +111,14 @@ static int e1000e_phc_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) struct e1000_adapter *adapter = container_of(ptp, struct e1000_adapter, ptp_clock_info); unsigned long flags; - u64 ns; + u64 cycles, ns; spin_lock_irqsave(&adapter->systim_lock, flags); - ns = timecounter_read(&adapter->tc); + + /* Use timecounter_cyc2time() to allow non-monotonic SYSTIM readings */ + cycles = adapter->cc.read(&adapter->cc); + ns = timecounter_cyc2time(&adapter->tc, cycles); + spin_unlock_irqrestore(&adapter->systim_lock, flags); *ts = ns_to_timespec64(ns); @@ -170,9 +174,12 @@ static void e1000e_systim_overflow_work(struct work_struct *work) systim_overflow_work.work); struct e1000_hw *hw = &adapter->hw; struct timespec64 ts; + u64 ns; - adapter->ptp_clock_info.gettime64(&adapter->ptp_clock_info, &ts); + /* Update the timecounter */ + ns = timecounter_read(&adapter->tc); + ts = ns_to_timespec64(ns); e_dbg("SYSTIM overflow check at %lld.%09lu\n", (long long) ts.tv_sec, ts.tv_nsec); diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 93543e176829..8f40e121f7d4 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -324,6 +324,8 @@ enum cfg_version { }; static const struct pci_device_id rtl8169_pci_tbl[] = { + { PCI_VDEVICE(REALTEK, 0x2502), RTL_CFG_1 }, + { PCI_VDEVICE(REALTEK, 0x2600), RTL_CFG_1 }, { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 }, { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 }, { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8161), 0, 0, RTL_CFG_1 }, diff --git a/drivers/perf/perf_event_armv8.c b/drivers/perf/perf_event_armv8.c index 443538a16aea..6b722b7a95d2 100644 --- a/drivers/perf/perf_event_armv8.c +++ b/drivers/perf/perf_event_armv8.c @@ -750,6 +750,7 @@ static struct platform_driver armv8_pmu_driver = { .driver = { .name = "armv8-pmu", .of_match_table = armv8_pmu_of_device_ids, + .suppress_bind_attrs = true, }, .probe = armv8_pmu_device_probe, }; diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index f96f7b865267..7c1defaef3f5 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -2084,7 +2084,8 @@ static int asus_wmi_add(struct platform_device *pdev) err = asus_wmi_backlight_init(asus); if (err && err != -ENODEV) goto fail_backlight; - } + } else + err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL); status = wmi_install_notify_handler(asus->driver->event_guid, asus_wmi_notify, asus); diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c index 741509b35617..14f32c114c55 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fp.c +++ b/drivers/scsi/megaraid/megaraid_sas_fp.c @@ -1273,7 +1273,7 @@ void mr_update_load_balance_params(struct MR_DRV_RAID_MAP_ALL *drv_map, for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES_EXT; ldCount++) { ld = MR_TargetIdToLdGet(ldCount, drv_map); - if (ld >= MAX_LOGICAL_DRIVES_EXT) { + if (ld >= MAX_LOGICAL_DRIVES_EXT - 1) { lbInfo[ldCount].loadBalanceFlag = 0; continue; } diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 213944ed64d9..3d3bfa814093 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1758,7 +1758,7 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, device_id < instance->fw_supported_vd_count)) { ld = MR_TargetIdToLdGet(device_id, local_map_ptr); - if (ld >= instance->fw_supported_vd_count) + if (ld >= instance->fw_supported_vd_count - 1) fp_possible = 0; raid = MR_LdRaidGet(ld, local_map_ptr); diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index c83dadfff171..bd904d42176d 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -207,6 +207,12 @@ cache_type_store(struct device *dev, struct device_attribute *attr, sp = buffer_data[0] & 0x80 ? 1 : 0; buffer_data[0] &= ~0x80; + /* + * Ensure WP, DPOFUA, and RESERVED fields are cleared in + * received mode parameter buffer before doing MODE SELECT. + */ + data.device_specific = 0; + if (scsi_mode_select(sdp, 1, sp, 8, buffer_data, len, SD_TIMEOUT, SD_MAX_RETRIES, &data, &sshdr)) { if (scsi_sense_valid(&sshdr)) diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 9413e1a949e5..5af4d6a03d6e 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -108,12 +108,17 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) buf[7] = 0x2; /* CmdQue=1 */ - memcpy(&buf[8], "LIO-ORG ", 8); - memset(&buf[16], 0x20, 16); + /* + * ASCII data fields described as being left-aligned shall have any + * unused bytes at the end of the field (i.e., highest offset) and the + * unused bytes shall be filled with ASCII space characters (20h). + */ + memset(&buf[8], 0x20, 8 + 16 + 4); + memcpy(&buf[8], "LIO-ORG", sizeof("LIO-ORG") - 1); memcpy(&buf[16], dev->t10_wwn.model, - min_t(size_t, strlen(dev->t10_wwn.model), 16)); + strnlen(dev->t10_wwn.model, 16)); memcpy(&buf[32], dev->t10_wwn.revision, - min_t(size_t, strlen(dev->t10_wwn.revision), 4)); + strnlen(dev->t10_wwn.revision, 4)); buf[4] = 31; /* Set additional length to 31 */ return 0; @@ -251,7 +256,9 @@ check_t10_vend_desc: buf[off] = 0x2; /* ASCII */ buf[off+1] = 0x1; /* T10 Vendor ID */ buf[off+2] = 0x0; - memcpy(&buf[off+4], "LIO-ORG", 8); + /* left align Vendor ID and pad with spaces */ + memset(&buf[off+4], 0x20, 8); + memcpy(&buf[off+4], "LIO-ORG", sizeof("LIO-ORG") - 1); /* Extra Byte for NULL Terminator */ id_len++; /* Identifier Length */ diff --git a/drivers/tty/tty_ldsem.c b/drivers/tty/tty_ldsem.c index ad7eba5ca380..34234c233851 100644 --- a/drivers/tty/tty_ldsem.c +++ b/drivers/tty/tty_ldsem.c @@ -307,6 +307,16 @@ down_write_failed(struct ld_semaphore *sem, long count, long timeout) if (!locked) ldsem_atomic_update(-LDSEM_WAIT_BIAS, sem); list_del(&waiter.list); + + /* + * In case of timeout, wake up every reader who gave the right of way + * to writer. Prevent separation readers into two groups: + * one that helds semaphore and another that sleeps. + * (in case of no contention with a writer) + */ + if (!locked && list_empty(&sem->write_wait)) + __ldsem_wake_readers(sem); + raw_spin_unlock_irq(&sem->wait_lock); __set_task_state(tsk, TASK_RUNNING); diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c index 34ab4f950f0a..0c1c34ff40a9 100644 --- a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c +++ b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c @@ -609,6 +609,8 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg) int r = 0; + memset(&p, 0, sizeof(p)); + switch (cmd) { case OMAPFB_SYNC_GFX: DBG("ioctl SYNC_GFX\n"); |