diff options
Diffstat (limited to 'drivers')
25 files changed, 41 insertions, 53 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index c897c4572036..ee69d50ba4fd 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -781,7 +781,7 @@ static struct socket *drbd_wait_for_connect(struct drbd_connection *connection, timeo = connect_int * HZ; /* 28.5% random jitter */ - timeo += (prandom_u32() & 1) ? timeo / 7 : -timeo / 7; + timeo += prandom_u32_max(2) ? timeo / 7 : -timeo / 7; err = wait_for_completion_interruptible_timeout(&ad->door_bell, timeo); if (err <= 0) @@ -1004,7 +1004,7 @@ retry: drbd_warn(connection, "Error receiving initial packet\n"); sock_release(s); randomize: - if (prandom_u32() & 1) + if (prandom_u32_max(2)) goto retry; } } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index cd75b0ca2555..845023c14eb3 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -2424,7 +2424,7 @@ gen8_dispatch_bsd_engine(struct drm_i915_private *dev_priv, /* Check whether the file_priv has already selected one ring. */ if ((int)file_priv->bsd_engine < 0) file_priv->bsd_engine = - get_random_int() % num_vcs_engines(dev_priv); + prandom_u32_max(num_vcs_engines(dev_priv)); return file_priv->bsd_engine; } diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 70da57ef2eeb..cc2222b85c88 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -3807,7 +3807,7 @@ static int cma_alloc_any_port(enum rdma_ucm_port_space ps, inet_get_local_port_range(net, &low, &high); remaining = (high - low) + 1; - rover = prandom_u32() % remaining + low; + rover = prandom_u32_max(remaining) + low; retry: if (last_used_port != rover) { struct rdma_bind_list *bind_list; diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c index f64e7e02b129..280d61466855 100644 --- a/drivers/infiniband/hw/cxgb4/id_table.c +++ b/drivers/infiniband/hw/cxgb4/id_table.c @@ -54,7 +54,7 @@ u32 c4iw_id_alloc(struct c4iw_id_table *alloc) if (obj < alloc->max) { if (alloc->flags & C4IW_ID_TABLE_F_RANDOM) - alloc->last += prandom_u32() % RANDOM_SKIP; + alloc->last += prandom_u32_max(RANDOM_SKIP); else alloc->last = obj + 1; if (alloc->last >= alloc->max) @@ -85,7 +85,7 @@ int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num, alloc->start = start; alloc->flags = flags; if (flags & C4IW_ID_TABLE_F_RANDOM) - alloc->last = prandom_u32() % RANDOM_SKIP; + alloc->last = prandom_u32_max(RANDOM_SKIP); else alloc->last = 0; alloc->max = num; diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c index 492b122d0521..480c062dd04f 100644 --- a/drivers/infiniband/hw/hns/hns_roce_ah.c +++ b/drivers/infiniband/hw/hns/hns_roce_ah.c @@ -41,9 +41,8 @@ static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr) u16 sport; if (!fl) - sport = get_random_u32() % - (IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 - - IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) + + sport = prandom_u32_max(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 - + IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) + IB_ROCE_UDP_ENCAP_VALID_PORT_MIN; else sport = rdma_flow_label_to_udp_sport(fl); diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c index 758e1d7ebc36..8546b8816524 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c +++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c @@ -1517,8 +1517,7 @@ static void rtrs_clt_err_recovery_work(struct work_struct *work) rtrs_clt_stop_and_destroy_conns(clt_path); queue_delayed_work(rtrs_wq, &clt_path->reconnect_dwork, msecs_to_jiffies(delay_ms + - prandom_u32() % - RTRS_RECONNECT_SEED)); + prandom_u32_max(RTRS_RECONNECT_SEED))); } static struct rtrs_clt_path *alloc_path(struct rtrs_clt_sess *clt, diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index f2c5a7e06fa9..3427555b0cca 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -401,7 +401,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio) } if (bypass_torture_test(dc)) { - if ((get_random_int() & 3) == 3) + if (prandom_u32_max(4) == 3) goto skip; else goto rescale; diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c index 64e3e4cb30c2..792660a85bc1 100644 --- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c +++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c @@ -221,7 +221,7 @@ static void vivid_fill_buff_noise(__s16 *tch_buf, int size) static inline int get_random_pressure(void) { - return get_random_int() % VIVID_PRESSURE_LIMIT; + return prandom_u32_max(VIVID_PRESSURE_LIMIT); } static void vivid_tch_buf_set(struct v4l2_pix_format *f, diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index ef53a2578824..95fa8fb1d45f 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -97,8 +97,8 @@ static void mmc_should_fail_request(struct mmc_host *host, !should_fail(&host->fail_mmc_request, data->blksz * data->blocks)) return; - data->error = data_errors[prandom_u32() % ARRAY_SIZE(data_errors)]; - data->bytes_xfered = (prandom_u32() % (data->bytes_xfered >> 9)) << 9; + data->error = data_errors[prandom_u32_max(ARRAY_SIZE(data_errors))]; + data->bytes_xfered = prandom_u32_max(data->bytes_xfered >> 9) << 9; } #else /* CONFIG_FAIL_MMC_REQUEST */ diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 581614196a84..c78bbc22e0d1 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1858,7 +1858,7 @@ static void dw_mci_start_fault_timer(struct dw_mci *host) * Try to inject the error at random points during the data transfer. */ hrtimer_start(&host->fault_timer, - ms_to_ktime(prandom_u32() % 25), + ms_to_ktime(prandom_u32_max(25)), HRTIMER_MODE_REL); } diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c index 24beade95c7f..50bcf745e816 100644 --- a/drivers/mtd/nand/raw/nandsim.c +++ b/drivers/mtd/nand/raw/nandsim.c @@ -1405,9 +1405,9 @@ static void ns_do_bit_flips(struct nandsim *ns, int num) if (bitflips && prandom_u32() < (1 << 22)) { int flips = 1; if (bitflips > 1) - flips = (prandom_u32() % (int) bitflips) + 1; + flips = prandom_u32_max(bitflips) + 1; while (flips--) { - int pos = prandom_u32() % (num * 8); + int pos = prandom_u32_max(num * 8); ns->buf.byte[pos / 8] ^= (1 << (pos % 8)); NS_WARN("read_page: flipping bit %d in page %d " "reading from %d ecc: corrected=%u failed=%u\n", diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c index c4f271314f52..1c7201b0f372 100644 --- a/drivers/mtd/tests/mtd_nandecctest.c +++ b/drivers/mtd/tests/mtd_nandecctest.c @@ -47,7 +47,7 @@ struct nand_ecc_test { static void single_bit_error_data(void *error_data, void *correct_data, size_t size) { - unsigned int offset = prandom_u32() % (size * BITS_PER_BYTE); + unsigned int offset = prandom_u32_max(size * BITS_PER_BYTE); memcpy(error_data, correct_data, size); __change_bit_le(offset, error_data); @@ -58,9 +58,9 @@ static void double_bit_error_data(void *error_data, void *correct_data, { unsigned int offset[2]; - offset[0] = prandom_u32() % (size * BITS_PER_BYTE); + offset[0] = prandom_u32_max(size * BITS_PER_BYTE); do { - offset[1] = prandom_u32() % (size * BITS_PER_BYTE); + offset[1] = prandom_u32_max(size * BITS_PER_BYTE); } while (offset[0] == offset[1]); memcpy(error_data, correct_data, size); @@ -71,7 +71,7 @@ static void double_bit_error_data(void *error_data, void *correct_data, static unsigned int random_ecc_bit(size_t size) { - unsigned int offset = prandom_u32() % (3 * BITS_PER_BYTE); + unsigned int offset = prandom_u32_max(3 * BITS_PER_BYTE); if (size == 256) { /* @@ -79,7 +79,7 @@ static unsigned int random_ecc_bit(size_t size) * and 17th bit) in ECC code for 256 byte data block */ while (offset == 16 || offset == 17) - offset = prandom_u32() % (3 * BITS_PER_BYTE); + offset = prandom_u32_max(3 * BITS_PER_BYTE); } return offset; diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c index cb29c8c1b370..d2faaca7f19d 100644 --- a/drivers/mtd/tests/stresstest.c +++ b/drivers/mtd/tests/stresstest.c @@ -45,9 +45,8 @@ static int rand_eb(void) unsigned int eb; again: - eb = prandom_u32(); /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */ - eb %= (ebcnt - 1); + eb = prandom_u32_max(ebcnt - 1); if (bbt[eb]) goto again; return eb; @@ -55,20 +54,12 @@ again: static int rand_offs(void) { - unsigned int offs; - - offs = prandom_u32(); - offs %= bufsize; - return offs; + return prandom_u32_max(bufsize); } static int rand_len(int offs) { - unsigned int len; - - len = prandom_u32(); - len %= (bufsize - offs); - return len; + return prandom_u32_max(bufsize - offs); } static int do_read(void) @@ -127,7 +118,7 @@ static int do_write(void) static int do_operation(void) { - if (prandom_u32() & 1) + if (prandom_u32_max(2)) return do_read(); else return do_write(); diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c index 31d427ee191a..908d0e088557 100644 --- a/drivers/mtd/ubi/debug.c +++ b/drivers/mtd/ubi/debug.c @@ -590,7 +590,7 @@ int ubi_dbg_power_cut(struct ubi_device *ubi, int caller) if (ubi->dbg.power_cut_max > ubi->dbg.power_cut_min) { range = ubi->dbg.power_cut_max - ubi->dbg.power_cut_min; - ubi->dbg.power_cut_counter += prandom_u32() % range; + ubi->dbg.power_cut_counter += prandom_u32_max(range); } return 0; } diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h index 118248a5d7d4..dc8d8f83657a 100644 --- a/drivers/mtd/ubi/debug.h +++ b/drivers/mtd/ubi/debug.h @@ -73,7 +73,7 @@ static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi) static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) { if (ubi->dbg.emulate_bitflips) - return !(prandom_u32() % 200); + return !prandom_u32_max(200); return 0; } @@ -87,7 +87,7 @@ static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi) { if (ubi->dbg.emulate_io_failures) - return !(prandom_u32() % 500); + return !prandom_u32_max(500); return 0; } @@ -101,7 +101,7 @@ static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi) static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi) { if (ubi->dbg.emulate_io_failures) - return !(prandom_u32() % 400); + return !prandom_u32_max(400); return 0; } diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index e86503d97f32..f597b313acaa 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -4105,8 +4105,7 @@ static int cnic_cm_alloc_mem(struct cnic_dev *dev) for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) atomic_set(&cp->csk_tbl[i].ref_count, 0); - port_id = prandom_u32(); - port_id %= CNIC_LOCAL_PORT_RANGE; + port_id = prandom_u32_max(CNIC_LOCAL_PORT_RANGE); if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, CNIC_LOCAL_PORT_MIN, port_id)) { cnic_cm_free_mem(dev); diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c index 539992dad8ba..a4256087ac82 100644 --- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c +++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c @@ -919,8 +919,8 @@ static int csk_wait_memory(struct chtls_dev *cdev, current_timeo = *timeo_p; noblock = (*timeo_p ? false : true); if (csk_mem_free(cdev, sk)) { - current_timeo = (prandom_u32() % (HZ / 5)) + 2; - vm_wait = (prandom_u32() % (HZ / 5)) + 2; + current_timeo = prandom_u32_max(HZ / 5) + 2; + vm_wait = prandom_u32_max(HZ / 5) + 2; } add_wait_queue(sk_sleep(sk), &wait); diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c index 3e69079ed694..7df78a721b04 100644 --- a/drivers/net/hamradio/baycom_epp.c +++ b/drivers/net/hamradio/baycom_epp.c @@ -438,7 +438,7 @@ static int transmit(struct baycom_state *bc, int cnt, unsigned char stat) if ((--bc->hdlctx.slotcnt) > 0) return 0; bc->hdlctx.slotcnt = bc->ch_params.slottime; - if ((prandom_u32() % 256) > bc->ch_params.ppersist) + if (prandom_u32_max(256) > bc->ch_params.ppersist) return 0; } } diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c index a6184d6c7b15..bef904325a0f 100644 --- a/drivers/net/hamradio/hdlcdrv.c +++ b/drivers/net/hamradio/hdlcdrv.c @@ -377,7 +377,7 @@ void hdlcdrv_arbitrate(struct net_device *dev, struct hdlcdrv_state *s) if ((--s->hdlctx.slotcnt) > 0) return; s->hdlctx.slotcnt = s->ch_params.slottime; - if ((prandom_u32() % 256) > s->ch_params.ppersist) + if (prandom_u32_max(256) > s->ch_params.ppersist) return; start_tx(dev, s); } diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c index 980f2be32f05..97a6cc5c7ae8 100644 --- a/drivers/net/hamradio/yam.c +++ b/drivers/net/hamradio/yam.c @@ -626,7 +626,7 @@ static void yam_arbitrate(struct net_device *dev) yp->slotcnt = yp->slot / 10; /* is random > persist ? */ - if ((prandom_u32() % 256) > yp->pers) + if (prandom_u32_max(256) > yp->pers) return; yam_start_tx(dev, yp); diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 9e9adde335c8..349b7b1dbbf2 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -1758,7 +1758,7 @@ static int qca808x_phy_fast_retrain_config(struct phy_device *phydev) static int qca808x_phy_ms_random_seed_set(struct phy_device *phydev) { - u16 seed_value = (prandom_u32() % QCA808X_MASTER_SLAVE_SEED_RANGE); + u16 seed_value = prandom_u32_max(QCA808X_MASTER_SLAVE_SEED_RANGE); return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED, QCA808X_MASTER_SLAVE_SEED_CFG, diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c index 479041f070f9..10d9d9c63b28 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c @@ -1128,7 +1128,7 @@ static void brcmf_p2p_afx_handler(struct work_struct *work) if (afx_hdl->is_listen && afx_hdl->my_listen_chan) /* 100ms ~ 300ms */ err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan, - 100 * (1 + prandom_u32() % 3)); + 100 * (1 + prandom_u32_max(3))); else err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index ed586e6d7d64..de0c545d50fd 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -1099,7 +1099,7 @@ static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, iwl_mvm_mac_ap_iterator, &data); if (data.beacon_device_ts) { - u32 rand = (prandom_u32() % (64 - 36)) + 36; + u32 rand = prandom_u32_max(64 - 36) + 36; mvmvif->ap_beacon_time = data.beacon_device_ts + ieee80211_tu_to_usec(data.beacon_int * rand / 100); diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index 39e16eab47aa..ddc048069af2 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -2233,7 +2233,7 @@ static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip) if (fip->probe_tries < FIP_VN_RLIM_COUNT) { fip->probe_tries++; - wait = prandom_u32() % FIP_VN_PROBE_WAIT; + wait = prandom_u32_max(FIP_VN_PROBE_WAIT); } else wait = FIP_VN_RLIM_INT; mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait)); @@ -3125,7 +3125,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip) fcoe_all_vn2vn, 0); fip->port_ka_time = jiffies + msecs_to_jiffies(FIP_VN_BEACON_INT + - (prandom_u32() % FIP_VN_BEACON_FUZZ)); + prandom_u32_max(FIP_VN_BEACON_FUZZ)); } if (time_before(fip->port_ka_time, next_time)) next_time = fip->port_ka_time; diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index cecfb2cb4c7b..df2fe7bd26d1 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -618,7 +618,7 @@ static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) sizeof(struct qedi_endpoint *)), GFP_KERNEL); if (!qedi->ep_tbl) return -ENOMEM; - port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; + port_id = prandom_u32_max(QEDI_LOCAL_PORT_RANGE); if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, QEDI_LOCAL_PORT_MIN, port_id)) { qedi_cm_free_mem(qedi); |