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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 07:55:01 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 07:55:01 -0800 |
commit | d7fc02c7bae7b1cf69269992cf880a43a350cdaa (patch) | |
tree | a43d56fa72913a1cc98a0bbebe054d08581b3a7c /drivers/isdn/gigaset/common.c | |
parent | ee1262dbc65ce0b6234a915d8432171e8d77f518 (diff) | |
parent | 28b4d5cc17c20786848cdc07b7ea237a309776bb (diff) | |
download | op-kernel-dev-d7fc02c7bae7b1cf69269992cf880a43a350cdaa.zip op-kernel-dev-d7fc02c7bae7b1cf69269992cf880a43a350cdaa.tar.gz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1815 commits)
mac80211: fix reorder buffer release
iwmc3200wifi: Enable wimax core through module parameter
iwmc3200wifi: Add wifi-wimax coexistence mode as a module parameter
iwmc3200wifi: Coex table command does not expect a response
iwmc3200wifi: Update wiwi priority table
iwlwifi: driver version track kernel version
iwlwifi: indicate uCode type when fail dump error/event log
iwl3945: remove duplicated event logging code
b43: fix two warnings
ipw2100: fix rebooting hang with driver loaded
cfg80211: indent regulatory messages with spaces
iwmc3200wifi: fix NULL pointer dereference in pmkid update
mac80211: Fix TX status reporting for injected data frames
ath9k: enable 2GHz band only if the device supports it
airo: Fix integer overflow warning
rt2x00: Fix padding bug on L2PAD devices.
WE: Fix set events not propagated
b43legacy: avoid PPC fault during resume
b43: avoid PPC fault during resume
tcp: fix a timewait refcnt race
...
Fix up conflicts due to sysctl cleanups (dead sysctl_check code and
CTL_UNNUMBERED removed) in
kernel/sysctl_check.c
net/ipv4/sysctl_net_ipv4.c
net/ipv6/addrconf.c
net/sctp/sysctl.c
Diffstat (limited to 'drivers/isdn/gigaset/common.c')
-rw-r--r-- | drivers/isdn/gigaset/common.c | 139 |
1 files changed, 77 insertions, 62 deletions
diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c index 33dcd8d..82ed1cd 100644 --- a/drivers/isdn/gigaset/common.c +++ b/drivers/isdn/gigaset/common.c @@ -108,7 +108,7 @@ int gigaset_enterconfigmode(struct cardstate *cs) { int i, r; - cs->control_state = TIOCM_RTS; //FIXME + cs->control_state = TIOCM_RTS; r = setflags(cs, TIOCM_DTR, 200); if (r < 0) @@ -132,10 +132,10 @@ int gigaset_enterconfigmode(struct cardstate *cs) error: dev_err(cs->dev, "error %d on setuartbits\n", -r); - cs->control_state = TIOCM_RTS|TIOCM_DTR; // FIXME is this a good value? + cs->control_state = TIOCM_RTS|TIOCM_DTR; cs->ops->set_modem_ctrl(cs, 0, TIOCM_RTS|TIOCM_DTR); - return -1; //r + return -1; } static int test_timeout(struct at_state_t *at_state) @@ -150,10 +150,9 @@ static int test_timeout(struct at_state_t *at_state) } if (!gigaset_add_event(at_state->cs, at_state, EV_TIMEOUT, NULL, - at_state->timer_index, NULL)) { - //FIXME what should we do? - } - + at_state->timer_index, NULL)) + dev_err(at_state->cs->dev, "%s: out of memory\n", + __func__); return 1; } @@ -207,6 +206,32 @@ int gigaset_get_channel(struct bc_state *bcs) return 1; } +struct bc_state *gigaset_get_free_channel(struct cardstate *cs) +{ + unsigned long flags; + int i; + + spin_lock_irqsave(&cs->lock, flags); + if (!try_module_get(cs->driver->owner)) { + gig_dbg(DEBUG_ANY, + "could not get module for allocating channel"); + spin_unlock_irqrestore(&cs->lock, flags); + return NULL; + } + for (i = 0; i < cs->channels; ++i) + if (!cs->bcs[i].use_count) { + ++cs->bcs[i].use_count; + cs->bcs[i].busy = 1; + spin_unlock_irqrestore(&cs->lock, flags); + gig_dbg(DEBUG_ANY, "allocated channel %d", i); + return cs->bcs + i; + } + module_put(cs->driver->owner); + spin_unlock_irqrestore(&cs->lock, flags); + gig_dbg(DEBUG_ANY, "no free channel"); + return NULL; +} + void gigaset_free_channel(struct bc_state *bcs) { unsigned long flags; @@ -367,16 +392,15 @@ static void gigaset_freebcs(struct bc_state *bcs) int i; gig_dbg(DEBUG_INIT, "freeing bcs[%d]->hw", bcs->channel); - if (!bcs->cs->ops->freebcshw(bcs)) { + if (!bcs->cs->ops->freebcshw(bcs)) gig_dbg(DEBUG_INIT, "failed"); - } gig_dbg(DEBUG_INIT, "clearing bcs[%d]->at_state", bcs->channel); clear_at_state(&bcs->at_state); gig_dbg(DEBUG_INIT, "freeing bcs[%d]->skb", bcs->channel); + dev_kfree_skb(bcs->skb); + bcs->skb = NULL; - if (bcs->skb) - dev_kfree_skb(bcs->skb); for (i = 0; i < AT_NUM; ++i) { kfree(bcs->commands[i]); bcs->commands[i] = NULL; @@ -463,6 +487,12 @@ void gigaset_freecs(struct cardstate *cs) switch (cs->cs_init) { default: + /* clear B channel structures */ + for (i = 0; i < cs->channels; ++i) { + gig_dbg(DEBUG_INIT, "clearing bcs[%d]", i); + gigaset_freebcs(cs->bcs + i); + } + /* clear device sysfs */ gigaset_free_dev_sysfs(cs); @@ -471,28 +501,20 @@ void gigaset_freecs(struct cardstate *cs) gig_dbg(DEBUG_INIT, "clearing hw"); cs->ops->freecshw(cs); - //FIXME cmdbuf - /* fall through */ case 2: /* error in initcshw */ /* Deregister from LL */ make_invalid(cs, VALID_ID); - gig_dbg(DEBUG_INIT, "clearing iif"); - gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD); + gigaset_isdn_unregister(cs); /* fall through */ - case 1: /* error when regestering to LL */ + case 1: /* error when registering to LL */ gig_dbg(DEBUG_INIT, "clearing at_state"); clear_at_state(&cs->at_state); dealloc_at_states(cs); /* fall through */ - case 0: /* error in one call to initbcs */ - for (i = 0; i < cs->channels; ++i) { - gig_dbg(DEBUG_INIT, "clearing bcs[%d]", i); - gigaset_freebcs(cs->bcs + i); - } - + case 0: /* error in basic setup */ clear_events(cs); gig_dbg(DEBUG_INIT, "freeing inbuf"); kfree(cs->inbuf); @@ -534,16 +556,13 @@ void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs, } -static void gigaset_inbuf_init(struct inbuf_t *inbuf, struct bc_state *bcs, - struct cardstate *cs, int inputstate) +static void gigaset_inbuf_init(struct inbuf_t *inbuf, struct cardstate *cs) /* inbuf->read must be allocated before! */ { inbuf->head = 0; inbuf->tail = 0; inbuf->cs = cs; - inbuf->bcs = bcs; /*base driver: NULL*/ - inbuf->rcvbuf = NULL; - inbuf->inputstate = inputstate; + inbuf->inputstate = INS_command; } /** @@ -599,7 +618,7 @@ static struct bc_state *gigaset_initbcs(struct bc_state *bcs, { int i; - bcs->tx_skb = NULL; //FIXME -> hw part + bcs->tx_skb = NULL; skb_queue_head_init(&bcs->squeue); @@ -618,13 +637,13 @@ static struct bc_state *gigaset_initbcs(struct bc_state *bcs, bcs->fcs = PPP_INITFCS; bcs->inputstate = 0; if (cs->ignoreframes) { - bcs->inputstate |= INS_skip_frame; bcs->skb = NULL; - } else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL) - skb_reserve(bcs->skb, HW_HDR_LEN); - else { - pr_err("out of memory\n"); - bcs->inputstate |= INS_skip_frame; + } else { + bcs->skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len); + if (bcs->skb != NULL) + skb_reserve(bcs->skb, cs->hw_hdr_len); + else + pr_err("out of memory\n"); } bcs->channel = channel; @@ -645,8 +664,8 @@ static struct bc_state *gigaset_initbcs(struct bc_state *bcs, gig_dbg(DEBUG_INIT, " failed"); gig_dbg(DEBUG_INIT, " freeing bcs[%d]->skb", channel); - if (bcs->skb) - dev_kfree_skb(bcs->skb); + dev_kfree_skb(bcs->skb); + bcs->skb = NULL; return NULL; } @@ -673,12 +692,13 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, int onechannel, int ignoreframes, int cidmode, const char *modulename) { - struct cardstate *cs = NULL; + struct cardstate *cs; unsigned long flags; int i; gig_dbg(DEBUG_INIT, "allocating cs"); - if (!(cs = alloc_cs(drv))) { + cs = alloc_cs(drv); + if (!cs) { pr_err("maximum number of devices exceeded\n"); return NULL; } @@ -707,7 +727,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, cs->ev_tail = 0; cs->ev_head = 0; - tasklet_init(&cs->event_tasklet, &gigaset_handle_event, + tasklet_init(&cs->event_tasklet, gigaset_handle_event, (unsigned long) cs); cs->commands_pending = 0; cs->cur_at_seq = 0; @@ -726,14 +746,6 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, cs->mode = M_UNKNOWN; cs->mstate = MS_UNINITIALIZED; - for (i = 0; i < channels; ++i) { - gig_dbg(DEBUG_INIT, "setting up bcs[%d].read", i); - if (!gigaset_initbcs(cs->bcs + i, cs, i)) { - pr_err("could not allocate channel %d data\n", i); - goto error; - } - } - ++cs->cs_init; gig_dbg(DEBUG_INIT, "setting up at_state"); @@ -743,10 +755,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, cs->cbytes = 0; gig_dbg(DEBUG_INIT, "setting up inbuf"); - if (onechannel) { //FIXME distinction necessary? - gigaset_inbuf_init(cs->inbuf, cs->bcs, cs, INS_command); - } else - gigaset_inbuf_init(cs->inbuf, NULL, cs, INS_command); + gigaset_inbuf_init(cs->inbuf, cs); cs->connected = 0; cs->isdn_up = 0; @@ -758,7 +767,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, cs->cmdbytes = 0; gig_dbg(DEBUG_INIT, "setting up iif"); - if (!gigaset_register_to_LL(cs, modulename)) { + if (!gigaset_isdn_register(cs, modulename)) { pr_err("error registering ISDN device\n"); goto error; } @@ -777,6 +786,15 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, /* set up device sysfs */ gigaset_init_dev_sysfs(cs); + /* set up channel data structures */ + for (i = 0; i < channels; ++i) { + gig_dbg(DEBUG_INIT, "setting up bcs[%d]", i); + if (!gigaset_initbcs(cs->bcs + i, cs, i)) { + pr_err("could not allocate channel %d data\n", i); + goto error; + } + } + spin_lock_irqsave(&cs->lock, flags); cs->running = 1; spin_unlock_irqrestore(&cs->lock, flags); @@ -824,9 +842,10 @@ void gigaset_bcs_reinit(struct bc_state *bcs) bcs->chstate = 0; bcs->ignore = cs->ignoreframes; - if (bcs->ignore) - bcs->inputstate |= INS_skip_frame; - + if (bcs->ignore) { + dev_kfree_skb(bcs->skb); + bcs->skb = NULL; + } cs->ops->reinitbcshw(bcs); } @@ -847,8 +866,6 @@ static void cleanup_cs(struct cardstate *cs) free_strings(&cs->at_state); gigaset_at_init(&cs->at_state, NULL, cs, 0); - kfree(cs->inbuf->rcvbuf); - cs->inbuf->rcvbuf = NULL; cs->inbuf->inputstate = INS_command; cs->inbuf->head = 0; cs->inbuf->tail = 0; @@ -911,15 +928,13 @@ int gigaset_start(struct cardstate *cs) cs->ops->baud_rate(cs, B115200); cs->ops->set_line_ctrl(cs, CS8); cs->control_state = TIOCM_DTR|TIOCM_RTS; - } else { - //FIXME use some saved values? } cs->waiting = 1; if (!gigaset_add_event(cs, &cs->at_state, EV_START, NULL, 0, NULL)) { cs->waiting = 0; - //FIXME what should we do? + dev_err(cs->dev, "%s: out of memory\n", __func__); goto error; } @@ -959,7 +974,7 @@ int gigaset_shutdown(struct cardstate *cs) cs->waiting = 1; if (!gigaset_add_event(cs, &cs->at_state, EV_SHUTDOWN, NULL, 0, NULL)) { - //FIXME what should we do? + dev_err(cs->dev, "%s: out of memory\n", __func__); goto exit; } @@ -990,7 +1005,7 @@ void gigaset_stop(struct cardstate *cs) cs->waiting = 1; if (!gigaset_add_event(cs, &cs->at_state, EV_STOP, NULL, 0, NULL)) { - //FIXME what should we do? + dev_err(cs->dev, "%s: out of memory\n", __func__); goto exit; } |