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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/net/wimax/i2400m/sdio-rx.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/net/wimax/i2400m/sdio-rx.c')
-rw-r--r-- | drivers/net/wimax/i2400m/sdio-rx.c | 42 |
1 files changed, 32 insertions, 10 deletions
diff --git a/drivers/net/wimax/i2400m/sdio-rx.c b/drivers/net/wimax/i2400m/sdio-rx.c index 321bead..8adf6c9 100644 --- a/drivers/net/wimax/i2400m/sdio-rx.c +++ b/drivers/net/wimax/i2400m/sdio-rx.c @@ -53,6 +53,7 @@ * i2400ms_irq() * i2400ms_rx() * __i2400ms_rx_get_size() + * i2400m_is_boot_barker() * i2400m_rx() * * i2400ms_rx_setup() @@ -138,6 +139,11 @@ void i2400ms_rx(struct i2400ms *i2400ms) ret = rx_size; goto error_get_size; } + /* + * Hardware quirk: make sure to clear the INTR status register + * AFTER getting the data transfer size. + */ + sdio_writeb(func, 1, I2400MS_INTR_CLEAR_ADDR, &ret); ret = -ENOMEM; skb = alloc_skb(rx_size, GFP_ATOMIC); @@ -153,25 +159,34 @@ void i2400ms_rx(struct i2400ms *i2400ms) } rmb(); /* make sure we get boot_mode from dev_reset_handle */ - if (i2400m->boot_mode == 1) { + if (unlikely(i2400m->boot_mode == 1)) { spin_lock(&i2400m->rx_lock); i2400ms->bm_ack_size = rx_size; spin_unlock(&i2400m->rx_lock); memcpy(i2400m->bm_ack_buf, skb->data, rx_size); wake_up(&i2400ms->bm_wfa_wq); - dev_err(dev, "RX: SDIO boot mode message\n"); + d_printf(5, dev, "RX: SDIO boot mode message\n"); kfree_skb(skb); - } else if (unlikely(!memcmp(skb->data, i2400m_NBOOT_BARKER, - sizeof(i2400m_NBOOT_BARKER)) - || !memcmp(skb->data, i2400m_SBOOT_BARKER, - sizeof(i2400m_SBOOT_BARKER)))) { - ret = i2400m_dev_reset_handle(i2400m); + goto out; + } + ret = -EIO; + if (unlikely(rx_size < sizeof(__le32))) { + dev_err(dev, "HW BUG? only %zu bytes received\n", rx_size); + goto error_bad_size; + } + if (likely(i2400m_is_d2h_barker(skb->data))) { + skb_put(skb, rx_size); + i2400m_rx(i2400m, skb); + } else if (unlikely(i2400m_is_boot_barker(i2400m, + skb->data, rx_size))) { + ret = i2400m_dev_reset_handle(i2400m, "device rebooted"); dev_err(dev, "RX: SDIO reboot barker\n"); kfree_skb(skb); } else { - skb_put(skb, rx_size); - i2400m_rx(i2400m, skb); + i2400m_unknown_barker(i2400m, skb->data, rx_size); + kfree_skb(skb); } +out: d_fnend(7, dev, "(i2400ms %p) = void\n", i2400ms); return; @@ -179,6 +194,7 @@ error_memcpy_fromio: kfree_skb(skb); error_alloc_skb: error_get_size: +error_bad_size: d_fnend(7, dev, "(i2400ms %p) = %d\n", i2400ms, ret); return; } @@ -209,7 +225,6 @@ void i2400ms_irq(struct sdio_func *func) dev_err(dev, "RX: BUG? got IRQ but no interrupt ready?\n"); goto error_no_irq; } - sdio_writeb(func, 1, I2400MS_INTR_CLEAR_ADDR, &ret); i2400ms_rx(i2400ms); error_no_irq: d_fnend(6, dev, "(i2400ms %p) = void\n", i2400ms); @@ -234,6 +249,13 @@ int i2400ms_rx_setup(struct i2400ms *i2400ms) init_waitqueue_head(&i2400ms->bm_wfa_wq); spin_lock(&i2400m->rx_lock); i2400ms->bm_wait_result = -EINPROGRESS; + /* + * Before we are about to enable the RX interrupt, make sure + * bm_ack_size is cleared to -EINPROGRESS which indicates + * no RX interrupt happened yet or the previous interrupt + * has been handled, we are ready to take the new interrupt + */ + i2400ms->bm_ack_size = -EINPROGRESS; spin_unlock(&i2400m->rx_lock); sdio_claim_host(func); |