diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/Makefile | 2 | ||||
| -rw-r--r-- | drivers/s390/block/dasd.c | 36 | ||||
| -rw-r--r-- | drivers/s390/block/dasd_alias.c | 3 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 1 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_api.c | 7 | ||||
| -rw-r--r-- | drivers/s390/virtio/Makefile (renamed from drivers/s390/kvm/Makefile) | 0 | ||||
| -rw-r--r-- | drivers/s390/virtio/kvm_virtio.c (renamed from drivers/s390/kvm/kvm_virtio.c) | 0 | ||||
| -rw-r--r-- | drivers/s390/virtio/virtio_ccw.c (renamed from drivers/s390/kvm/virtio_ccw.c) | 0 |
8 files changed, 40 insertions, 9 deletions
diff --git a/drivers/s390/Makefile b/drivers/s390/Makefile index 95bccfd3f169..e5225ad9c5b1 100644 --- a/drivers/s390/Makefile +++ b/drivers/s390/Makefile @@ -2,7 +2,7 @@ # Makefile for the S/390 specific device drivers # -obj-y += cio/ block/ char/ crypto/ net/ scsi/ kvm/ +obj-y += cio/ block/ char/ crypto/ net/ scsi/ virtio/ drivers-y += drivers/s390/built-in.o diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 1aec8ff0b587..f73d2f579a7e 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -1863,6 +1863,33 @@ static void __dasd_device_check_expire(struct dasd_device *device) } /* + * return 1 when device is not eligible for IO + */ +static int __dasd_device_is_unusable(struct dasd_device *device, + struct dasd_ccw_req *cqr) +{ + int mask = ~(DASD_STOPPED_DC_WAIT | DASD_UNRESUMED_PM); + + if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { + /* dasd is being set offline. */ + return 1; + } + if (device->stopped) { + if (device->stopped & mask) { + /* stopped and CQR will not change that. */ + return 1; + } + if (!test_bit(DASD_CQR_VERIFY_PATH, &cqr->flags)) { + /* CQR is not able to change device to + * operational. */ + return 1; + } + /* CQR required to get device operational. */ + } + return 0; +} + +/* * Take a look at the first request on the ccw queue and check * if it needs to be started. */ @@ -1876,13 +1903,8 @@ static void __dasd_device_start_head(struct dasd_device *device) cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); if (cqr->status != DASD_CQR_QUEUED) return; - /* when device is stopped, return request to previous layer - * exception: only the disconnect or unresumed bits are set and the - * cqr is a path verification request - */ - if (device->stopped && - !(!(device->stopped & ~(DASD_STOPPED_DC_WAIT | DASD_UNRESUMED_PM)) - && test_bit(DASD_CQR_VERIFY_PATH, &cqr->flags))) { + /* if device is not usable return request to upper layer */ + if (__dasd_device_is_unusable(device, cqr)) { cqr->intrc = -EAGAIN; cqr->status = DASD_CQR_CLEARED; dasd_schedule_device_bh(device); diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c index a2597e683e79..ee3a6faae22a 100644 --- a/drivers/s390/block/dasd_alias.c +++ b/drivers/s390/block/dasd_alias.c @@ -699,7 +699,8 @@ struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *base_device) struct dasd_device, alias_list); spin_unlock_irqrestore(&lcu->lock, flags); alias_priv = (struct dasd_eckd_private *) alias_device->private; - if ((alias_priv->count < private->count) && !alias_device->stopped) + if ((alias_priv->count < private->count) && !alias_device->stopped && + !test_bit(DASD_FLAG_OFFLINE, &alias_device->flags)) return alias_device; else return NULL; diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index aeed7969fd79..7bc6df3100ef 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -7,6 +7,7 @@ #define KMSG_COMPONENT "sclp_early" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#include <linux/errno.h> #include <asm/ctl_reg.h> #include <asm/sclp.h> #include <asm/ipl.h> diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 08f1830cbfc4..01bf1f5cf2e9 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -54,6 +54,10 @@ MODULE_DESCRIPTION("Cryptographic Coprocessor interface, " \ "Copyright IBM Corp. 2001, 2012"); MODULE_LICENSE("GPL"); +static int zcrypt_hwrng_seed = 1; +module_param_named(hwrng_seed, zcrypt_hwrng_seed, int, S_IRUSR|S_IRGRP); +MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on)."); + static DEFINE_SPINLOCK(zcrypt_device_lock); static LIST_HEAD(zcrypt_device_list); static int zcrypt_device_count = 0; @@ -1373,6 +1377,7 @@ static int zcrypt_rng_data_read(struct hwrng *rng, u32 *data) static struct hwrng zcrypt_rng_dev = { .name = "zcrypt", .data_read = zcrypt_rng_data_read, + .quality = 990, }; static int zcrypt_rng_device_add(void) @@ -1387,6 +1392,8 @@ static int zcrypt_rng_device_add(void) goto out; } zcrypt_rng_buffer_index = 0; + if (!zcrypt_hwrng_seed) + zcrypt_rng_dev.quality = 0; rc = hwrng_register(&zcrypt_rng_dev); if (rc) goto out_free; diff --git a/drivers/s390/kvm/Makefile b/drivers/s390/virtio/Makefile index 241891a57caf..241891a57caf 100644 --- a/drivers/s390/kvm/Makefile +++ b/drivers/s390/virtio/Makefile diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/virtio/kvm_virtio.c index 53fb975c404b..53fb975c404b 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/virtio/kvm_virtio.c diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index f8d8fdb26b72..f8d8fdb26b72 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c |