diff options
Diffstat (limited to 'drivers')
65 files changed, 524 insertions, 324 deletions
diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c index 0ca1ee768a1..8ce74d95ae4 100644 --- a/drivers/md/dm-log-userspace-transfer.c +++ b/drivers/md/dm-log-userspace-transfer.c @@ -108,7 +108,7 @@ static int fill_pkg(struct cn_msg *msg, struct dm_ulog_request *tfr) *(pkg->data_size) = 0; } else if (tfr->data_size > *(pkg->data_size)) { DMERR("Insufficient space to receive package [%u] " - "(%u vs %lu)", tfr->request_type, + "(%u vs %zu)", tfr->request_type, tfr->data_size, *(pkg->data_size)); *(pkg->data_size) = 0; diff --git a/drivers/md/md.c b/drivers/md/md.c index 5b98bea4ff9..103f2d33fa8 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -359,6 +359,7 @@ static mddev_t * mddev_find(dev_t unit) else new->md_minor = MINOR(unit) >> MdpMinorShift; + mutex_init(&new->open_mutex); mutex_init(&new->reconfig_mutex); INIT_LIST_HEAD(&new->disks); INIT_LIST_HEAD(&new->all_mddevs); @@ -1974,17 +1975,14 @@ repeat: /* otherwise we have to go forward and ... */ mddev->events ++; if (!mddev->in_sync || mddev->recovery_cp != MaxSector) { /* not clean */ - /* .. if the array isn't clean, insist on an odd 'events' */ - if ((mddev->events&1)==0) { - mddev->events++; + /* .. if the array isn't clean, an 'even' event must also go + * to spares. */ + if ((mddev->events&1)==0) nospares = 0; - } } else { - /* otherwise insist on an even 'events' (for clean states) */ - if ((mddev->events&1)) { - mddev->events++; + /* otherwise an 'odd' event must go to spares */ + if ((mddev->events&1)) nospares = 0; - } } } @@ -3601,6 +3599,7 @@ max_sync_store(mddev_t *mddev, const char *buf, size_t len) if (max < mddev->resync_min) return -EINVAL; if (max < mddev->resync_max && + mddev->ro == 0 && test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) return -EBUSY; @@ -4304,12 +4303,11 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) struct gendisk *disk = mddev->gendisk; mdk_rdev_t *rdev; + mutex_lock(&mddev->open_mutex); if (atomic_read(&mddev->openers) > is_open) { printk("md: %s still in use.\n",mdname(mddev)); - return -EBUSY; - } - - if (mddev->pers) { + err = -EBUSY; + } else if (mddev->pers) { if (mddev->sync_thread) { set_bit(MD_RECOVERY_FROZEN, &mddev->recovery); @@ -4367,7 +4365,10 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) set_disk_ro(disk, 1); clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); } - +out: + mutex_unlock(&mddev->open_mutex); + if (err) + return err; /* * Free resources if final stop */ @@ -4433,7 +4434,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open) blk_integrity_unregister(disk); md_new_event(mddev); sysfs_notify_dirent(mddev->sysfs_state); -out: return err; } @@ -5518,12 +5518,12 @@ static int md_open(struct block_device *bdev, fmode_t mode) } BUG_ON(mddev != bdev->bd_disk->private_data); - if ((err = mutex_lock_interruptible_nested(&mddev->reconfig_mutex, 1))) + if ((err = mutex_lock_interruptible(&mddev->open_mutex))) goto out; err = 0; atomic_inc(&mddev->openers); - mddev_unlock(mddev); + mutex_unlock(&mddev->open_mutex); check_disk_change(bdev); out: diff --git a/drivers/md/md.h b/drivers/md/md.h index 78f03168baf..f8fc188bc76 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -223,6 +223,16 @@ struct mddev_s * so we don't loop trying */ int in_sync; /* know to not need resync */ + /* 'open_mutex' avoids races between 'md_open' and 'do_md_stop', so + * that we are never stopping an array while it is open. + * 'reconfig_mutex' protects all other reconfiguration. + * These locks are separate due to conflicting interactions + * with bdev->bd_mutex. + * Lock ordering is: + * reconfig_mutex -> bd_mutex : e.g. do_md_run -> revalidate_disk + * bd_mutex -> open_mutex: e.g. __blkdev_get -> md_open + */ + struct mutex open_mutex; struct mutex reconfig_mutex; atomic_t active; /* general refcount */ atomic_t openers; /* number of active opens */ diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 2b521ee67df..b8a2c5dc67b 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3785,7 +3785,7 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped conf->reshape_progress < raid5_size(mddev, 0, 0)) { sector_nr = raid5_size(mddev, 0, 0) - conf->reshape_progress; - } else if (mddev->delta_disks > 0 && + } else if (mddev->delta_disks >= 0 && conf->reshape_progress > 0) sector_nr = conf->reshape_progress; sector_div(sector_nr, new_data_disks); @@ -4509,7 +4509,26 @@ static int run(mddev_t *mddev) (old_disks-max_degraded)); /* here_old is the first stripe that we might need to read * from */ - if (here_new >= here_old) { + if (mddev->delta_disks == 0) { + /* We cannot be sure it is safe to start an in-place + * reshape. It is only safe if user-space if monitoring + * and taking constant backups. + * mdadm always starts a situation like this in + * readonly mode so it can take control before + * allowing any writes. So just check for that. + */ + if ((here_new * mddev->new_chunk_sectors != + here_old * mddev->chunk_sectors) || + mddev->ro == 0) { + printk(KERN_ERR "raid5: in-place reshape must be started" + " in read-only mode - aborting\n"); + return -EINVAL; + } + } else if (mddev->delta_disks < 0 + ? (here_new * mddev->new_chunk_sectors <= + here_old * mddev->chunk_sectors) + : (here_new * mddev->new_chunk_sectors >= + here_old * mddev->chunk_sectors)) { /* Reading from the same stripe as writing to - bad */ printk(KERN_ERR "raid5: reshape_position too early for " "auto-recovery - aborting.\n"); @@ -5078,8 +5097,15 @@ static void raid5_finish_reshape(mddev_t *mddev) mddev->degraded--; for (d = conf->raid_disks ; d < conf->raid_disks - mddev->delta_disks; - d++) - raid5_remove_disk(mddev, d); + d++) { + mdk_rdev_t *rdev = conf->disks[d].rdev; + if (rdev && raid5_remove_disk(mddev, d) == 0) { + char nm[20]; + sprintf(nm, "rd%d", rdev->raid_disk); + sysfs_remove_link(&mddev->kobj, nm); + rdev->raid_disk = -1; + } + } } mddev->layout = conf->algorithm; mddev->chunk_sectors = conf->chunk_sectors; diff --git a/drivers/media/common/tuners/qt1010.c b/drivers/media/common/tuners/qt1010.c index 825aa1412e6..9f5dba244cb 100644 --- a/drivers/media/common/tuners/qt1010.c +++ b/drivers/media/common/tuners/qt1010.c @@ -64,24 +64,22 @@ static int qt1010_writereg(struct qt1010_priv *priv, u8 reg, u8 val) /* dump all registers */ static void qt1010_dump_regs(struct qt1010_priv *priv) { - char buf[52], buf2[4]; u8 reg, val; for (reg = 0; ; reg++) { if (reg % 16 == 0) { if (reg) - printk("%s\n", buf); - sprintf(buf, "%02x: ", reg); + printk(KERN_CONT "\n"); + printk(KERN_DEBUG "%02x:", reg); } if (qt1010_readreg(priv, reg, &val) == 0) - sprintf(buf2, "%02x ", val); + printk(KERN_CONT " %02x", val); else - strcpy(buf2, "-- "); - strcat(buf, buf2); + printk(KERN_CONT " --"); if (reg == 0x2f) break; } - printk("%s\n", buf); + printk(KERN_CONT "\n"); } static int qt1010_set_params(struct dvb_frontend *fe, diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c index aa20ce8cc66..f270e605da8 100644 --- a/drivers/media/common/tuners/tuner-xc2028.c +++ b/drivers/media/common/tuners/tuner-xc2028.c @@ -1119,8 +1119,8 @@ static int xc2028_sleep(struct dvb_frontend *fe) struct xc2028_data *priv = fe->tuner_priv; int rc = 0; - /* Avoid firmware reload on slow devices */ - if (no_poweroff) + /* Avoid firmware reload on slow devices or if PM disabled */ + if (no_poweroff || priv->ctrl.disable_power_mgmt) return 0; tuner_dbg("Putting xc2028/3028 into poweroff mode.\n"); diff --git a/drivers/media/common/tuners/tuner-xc2028.h b/drivers/media/common/tuners/tuner-xc2028.h index 19de7928a74..a90c35d50ad 100644 --- a/drivers/media/common/tuners/tuner-xc2028.h +++ b/drivers/media/common/tuners/tuner-xc2028.h @@ -38,6 +38,7 @@ struct xc2028_ctrl { unsigned int input1:1; unsigned int vhfbw7:1; unsigned int uhfbw8:1; + unsigned int disable_power_mgmt:1; unsigned int demod; enum firmware_type type:2; }; diff --git a/drivers/media/dvb/dvb-usb/af9015.c b/drivers/media/dvb/dvb-usb/af9015.c index 4cb31e7c13c..26690dfb326 100644 --- a/drivers/media/dvb/dvb-usb/af9015.c +++ b/drivers/media/dvb/dvb-usb/af9015.c @@ -81,7 +81,6 @@ static int af9015_rw_udev(struct usb_device *udev, struct req_t *req) switch (req->cmd) { case GET_CONFIG: - case BOOT: case READ_MEMORY: case RECONNECT_USB: case GET_IR_CODE: @@ -100,6 +99,7 @@ static int af9015_rw_udev(struct usb_device *udev, struct req_t *req) case WRITE_VIRTUAL_MEMORY: case COPY_FIRMWARE: case DOWNLOAD_FIRMWARE: + case BOOT: break; default: err("unknown command:%d", req->cmd); diff --git a/drivers/media/dvb/frontends/cx22700.c b/drivers/media/dvb/frontends/cx22700.c index ace5cb17165..fbd838eca26 100644 --- a/drivers/media/dvb/frontends/cx22700.c +++ b/drivers/media/dvb/frontends/cx22700.c @@ -380,7 +380,7 @@ struct dvb_frontend* cx22700_attach(const struct cx22700_config* config, struct cx22700_state* state = NULL; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct cx22700_state), GFP_KERNEL); + state = kzalloc(sizeof(struct cx22700_state), GFP_KERNEL); if (state == NULL) goto error; /* setup the state */ diff --git a/drivers/media/dvb/frontends/cx22702.c b/drivers/media/dvb/frontends/cx22702.c index 5d1abe34bdd..00b5c7e91d5 100644 --- a/drivers/media/dvb/frontends/cx22702.c +++ b/drivers/media/dvb/frontends/cx22702.c @@ -580,7 +580,7 @@ struct dvb_frontend *cx22702_attach(const struct cx22702_config *config, struct cx22702_state *state = NULL; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct cx22702_state), GFP_KERNEL); + state = kzalloc(sizeof(struct cx22702_state), GFP_KERNEL); if (state == NULL) goto error; diff --git a/drivers/media/dvb/frontends/cx24110.c b/drivers/media/dvb/frontends/cx24110.c index 87ae29db024..ffbcfabd83f 100644 --- a/drivers/media/dvb/frontends/cx24110.c +++ b/drivers/media/dvb/frontends/cx24110.c @@ -598,7 +598,7 @@ struct dvb_frontend* cx24110_attach(const struct cx24110_config* config, int ret; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct cx24110_state), GFP_KERNEL); + state = kzalloc(sizeof(struct cx24110_state), GFP_KERNEL); if (state == NULL) goto error; /* setup the state */ diff --git a/drivers/media/dvb/frontends/dvb_dummy_fe.c b/drivers/media/dvb/frontends/dvb_dummy_fe.c index db8a937cc63..a7fc7e53a55 100644 --- a/drivers/media/dvb/frontends/dvb_dummy_fe.c +++ b/drivers/media/dvb/frontends/dvb_dummy_fe.c @@ -117,7 +117,7 @@ struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void) struct dvb_dummy_fe_state* state = NULL; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); if (state == NULL) goto error; /* create dvb_frontend */ @@ -137,7 +137,7 @@ struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) struct dvb_dummy_fe_state* state = NULL; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); if (state == NULL) goto error; /* create dvb_frontend */ @@ -157,7 +157,7 @@ struct dvb_frontend *dvb_dummy_fe_qam_attach(void) struct dvb_dummy_fe_state* state = NULL; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); if (state == NULL) goto error; /* create dvb_frontend */ diff --git a/drivers/media/dvb/frontends/l64781.c b/drivers/media/dvb/frontends/l64781.c index e1e70e9e0cb..3051b64aa17 100644 --- a/drivers/media/dvb/frontends/l64781.c +++ b/drivers/media/dvb/frontends/l64781.c @@ -501,7 +501,7 @@ struct dvb_frontend* l64781_attach(const struct l64781_config* config, { .addr = config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct l64781_state), GFP_KERNEL); + state = kzalloc(sizeof(struct l64781_state), GFP_KERNEL); if (state == NULL) goto error; /* setup the state */ diff --git a/drivers/media/dvb/frontends/lgs8gl5.c b/drivers/media/dvb/frontends/lgs8gl5.c index 855852fddf2..bb37ed289a0 100644 --- a/drivers/media/dvb/frontends/lgs8gl5.c +++ b/drivers/media/dvb/frontends/lgs8gl5.c @@ -387,7 +387,7 @@ lgs8gl5_attach(const struct lgs8gl5_config *config, struct i2c_adapter *i2c) dprintk("%s\n", __func__); /* Allocate memory for the internal state */ - state = kmalloc(sizeof(struct lgs8gl5_state), GFP_KERNEL); + state = kzalloc(sizeof(struct lgs8gl5_state), GFP_KERNEL); if (state == NULL) goto error; diff --git a/drivers/media/dvb/frontends/mt312.c b/drivers/media/dvb/frontends/mt312.c index a621f727935..f69daaac78c 100644 --- a/drivers/media/dvb/frontends/mt312.c +++ b/drivers/media/dvb/frontends/mt312.c @@ -782,7 +782,7 @@ struct dvb_frontend *mt312_attach(const struct mt312_config *config, struct mt312_state *state = NULL; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct mt312_state), GFP_KERNEL); + state = kzalloc(sizeof(struct mt312_state), GFP_KERNEL); if (state == NULL) goto error; diff --git a/drivers/media/dvb/frontends/nxt6000.c b/drivers/media/dvb/frontends/nxt6000.c index 0eef22dbf8a..a763ec756f7 100644 --- a/drivers/media/dvb/frontends/nxt6000.c +++ b/drivers/media/dvb/frontends/nxt6000.c @@ -545,7 +545,7 @@ struct dvb_frontend* nxt6000_attach(const struct nxt6000_config* config, struct nxt6000_state* state = NULL; /* allocate memory for the internal state */ - state = kmalloc(sizeof(struct nxt6000_state), GFP_KERNEL); + state = kzalloc(sizeof(struct nxt6000_state), GFP_KERNEL); if (state == NULL) goto error; /* setup the state */ diff --git a/drivers/media/dvb/frontends/or51132.c b/drivers/media/dvb/frontends/or51132.c index 8133ea3cddd..38e67accb8c 100644 --- a/drivers/media/dvb/frontends/or51132.c +++ b/drivers/media/dvb/frontends/or51132.c @@ -562,7 +562,7 @@ struct dvb_frontend* or51132_attach(const struct or51132_config* config, struct or51132_state* state = NULL; /* Allocate memory for the internal state */ - state = kmalloc(sizeof(struct or51132_state), GFP_KERNEL); + state = kzalloc(sizeof(struct or51132_state), GFP_KERNEL); if (state == NULL) return NULL; diff --git a/drivers/media/dvb/frontends/or51211.c b/drivers/media/dvb/frontends/or51211.c index 16cf2fdd5d7..c709ce6771c 100644 --- a/drivers/media/dvb/frontends/or51211.c +++ b/drivers/media/dvb/frontends/or51211.c @@ -527,7 +527,7 @@ struct dvb_frontend* or51211_attach(const struct or51211_config* config, struct or51211_state* state = NULL; /* Allocate memory for the internal state */ - state = kmalloc(sizeof(struct or51211_state), GFP_KERNEL); + state = kzalloc(sizeof(struct or51211_state), GFP_KERNEL); if (state == NULL) return NULL; diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409. |