diff options
author | Bob Copeland <me@bobcopeland.com> | 2009-08-07 12:33:49 +0200 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2009-08-14 15:13:38 +0200 |
commit | b5ed9c1b6f8fcb2d2315f12599fd5808f7933f16 (patch) | |
tree | 33f56a3d843dc59b7643a28ea3e5916a7ac7d362 /drivers/net/wireless/wl12xx | |
parent | wl1251: add sdio support (diff) | |
download | linux-b5ed9c1b6f8fcb2d2315f12599fd5808f7933f16.tar.xz linux-b5ed9c1b6f8fcb2d2315f12599fd5808f7933f16.zip |
wl1251: make irq handling interface specific
In SDIO, the host driver requests the IRQ and invokes a callback to the
card driver. This differs from SPI, so the relevant code needs to be
interface-specific. This patch pushes the irq code down into _spi.c
and _sdio.c, and adds enable/disable callbacks.
This fixes the following warning:
[ 566.343887] ------------[ cut here ]------------
[ 566.349105] WARNING: at kernel/irq/manage.c:222 __enable_irq+0x3c/0x6c()
[ 566.356735] Unbalanced enable for IRQ 0
[ 566.361099] Modules linked in: msm_wifi wl12xx_sdio wl12xx mac80211 cfg80211 rfkill_backport lib80211_crypt_ccmp lib80211_crypt_wep lib80211_crypt_tkip lib80211
[ 566.381240] [<c025acec>] (dump_stack+0x0/0x14) from [<c004b610>] (warn_slowpath+0x70/0x8c)
[ 566.391860] [<c004b5a0>] (warn_slowpath+0x0/0x8c) from [<c0077c10>] (__enable_irq+0x3c/0x6c)
[ 566.402572] r3:00000000 r2:c02cad13
[ 566.407516] r7:00001002 r6:00000000 r5:c0310be4 r4:c0310be4
[ 566.415786] [<c0077bd4>] (__enable_irq+0x0/0x6c) from [<c0077fd0>] (enable_irq+0x38/0x64)
[ 566.425826] r5:c0310be4 r4:a0000013
[ 566.430709] [<c0077f98>] (enable_irq+0x0/0x64) from [<bf0dfa78>] (wl12xx_boot_run_firmware+0xfc/0x170 [wl12xx])
[ 566.442947] r7:00001002 r6:c440a9fc r5:00000072 r4:c440a9e0
[ 566.450851] [<bf0df97c>] (wl12xx_boot_run_firmware+0x0/0x170 [wl12xx]) from [<bf0e05f0>] (wl1251_boot+0xd4/0x108 [wl12xx])
[ 566.464492] r5:00000000 r4:c440a9e0
[ 566.469466] [<bf0e051c>] (wl1251_boot+0x0/0x108 [wl12xx]) from [<bf0dd27c>] (wl12xx_op_start+0x54/0xb8 [wl12xx])
[ 566.482162] r5:00000000 r4:c440a9e0
[ 566.487472] [<bf0dd228>] (wl12xx_op_start+0x0/0xb8 [wl12xx]) from [<bf0b96dc>] (ieee80211_open+0x2dc/0x720 [mac80211])
[ 566.500594] r7:00001002 r6:c4950800 r5:c440a220 r4:00000000
[ 566.508865] [<bf0b9400>] (ieee80211_open+0x0/0x720 [mac80211]) from [<c01f1edc>] (dev_open+0x9c/0xfc)
[ 566.520705] [<c01f1e40>] (dev_open+0x0/0xfc) from [<c01f17dc>] (dev_change_flags+0x98/0x170)
[ 566.531417] r5:00000041 r4:c4950800
[ 566.536330] [<c01f1744>] (dev_change_flags+0x0/0x170) from [<c023041c>] (devinet_ioctl+0x3a8/0x784)
[ 566.547683] r7:c128e380 r6:00000001 r5:00008914 r4:00000000
[ 566.555587] [<c0230074>] (devinet_ioctl+0x0/0x784) from [<c02318cc>] (inet_ioctl+0xdc/0x114)
[ 566.566299] [<c02317f0>] (inet_ioctl+0x0/0x114) from [<c01e1a60>] (sock_ioctl+0x1f0/0x248)
[ 566.576827] r5:00008914 r4:c572c1a0
[ 566.581771] [<c01e1870>] (sock_ioctl+0x0/0x248) from [<c00b23a0>] (vfs_ioctl+0x34/0x94)
[ 566.592086] r7:c572c1a0 r6:bee497e8 r5:00008914 r4:c572c1a0
[ 566.599990] [<c00b236c>] (vfs_ioctl+0x0/0x94) from [<c00b2a28>] (do_vfs_ioctl+0x52c/0x584)
[ 566.610549] r7:c572c1a0 r6:00008914 r5:c572c1a0 r4:c3201228
[ 566.618453] [<c00b24fc>] (do_vfs_ioctl+0x0/0x584) from [<c00b2ac0>] (sys_ioctl+0x40/0x64)
[ 566.628890] [<c00b2a80>] (sys_ioctl+0x0/0x64) from [<c0021da0>] (ret_fast_syscall+0x0/0x2c)
[ 566.639541] r7:00000036 r6:00000000 r5:00000004 r4:001a11f3
[ 566.647445] ---[ end trace 15c26ef7dd5e7b03 ]---
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/wl12xx')
-rw-r--r-- | drivers/net/wireless/wl12xx/wl1251.h | 5 | ||||
-rw-r--r-- | drivers/net/wireless/wl12xx/wl1251_boot.c | 7 | ||||
-rw-r--r-- | drivers/net/wireless/wl12xx/wl1251_main.c | 24 | ||||
-rw-r--r-- | drivers/net/wireless/wl12xx/wl1251_sdio.c | 36 | ||||
-rw-r--r-- | drivers/net/wireless/wl12xx/wl1251_spi.c | 26 |
5 files changed, 65 insertions, 33 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1251.h b/drivers/net/wireless/wl12xx/wl1251.h index ebe2c70559cd..13f0589beec9 100644 --- a/drivers/net/wireless/wl12xx/wl1251.h +++ b/drivers/net/wireless/wl12xx/wl1251.h @@ -285,6 +285,8 @@ struct wl1251_if_operations { void (*read)(struct wl1251 *wl, int addr, void *buf, size_t len); void (*write)(struct wl1251 *wl, int addr, void *buf, size_t len); void (*reset)(struct wl1251 *wl); + void (*enable_irq)(struct wl1251 *wl); + void (*disable_irq)(struct wl1251 *wl); }; struct wl1251 { @@ -404,10 +406,11 @@ struct wl1251 { int wl1251_plt_start(struct wl1251 *wl); int wl1251_plt_stop(struct wl1251 *wl); -irqreturn_t wl1251_irq(int irq, void *cookie); struct ieee80211_hw *wl1251_alloc_hw(void); int wl1251_free_hw(struct wl1251 *wl); int wl1251_init_ieee80211(struct wl1251 *wl); +void wl1251_enable_interrupts(struct wl1251 *wl); +void wl1251_disable_interrupts(struct wl1251 *wl); #define DEFAULT_HW_GEN_MODULATION_TYPE CCK_LONG /* Long Preamble */ #define DEFAULT_HW_GEN_TX_RATE RATE_2MBPS diff --git a/drivers/net/wireless/wl12xx/wl1251_boot.c b/drivers/net/wireless/wl12xx/wl1251_boot.c index 5c6f32757ac4..8b50d44d8243 100644 --- a/drivers/net/wireless/wl12xx/wl1251_boot.c +++ b/drivers/net/wireless/wl12xx/wl1251_boot.c @@ -29,11 +29,6 @@ #include "wl1251_spi.h" #include "wl1251_event.h" -static void wl1251_boot_enable_interrupts(struct wl1251 *wl) -{ - enable_irq(wl->irq); -} - void wl1251_boot_target_enable_interrupts(struct wl1251 *wl) { wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); @@ -278,7 +273,7 @@ int wl1251_boot_run_firmware(struct wl1251 *wl) */ /* enable gpio interrupts */ - wl1251_boot_enable_interrupts(wl); + wl1251_enable_interrupts(wl); wl->chip.op_target_enable_interrupts(wl); diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c index abe157a174c7..4c1aad33fb51 100644 --- a/drivers/net/wireless/wl12xx/wl1251_main.c +++ b/drivers/net/wireless/wl12xx/wl1251_main.c @@ -42,9 +42,14 @@ #include "wl1251_init.h" #include "wl1251_debugfs.h" -static void wl1251_disable_interrupts(struct wl1251 *wl) +void wl1251_enable_interrupts(struct wl1251 *wl) { - disable_irq(wl->irq); + wl->if_ops->enable_irq(wl); +} + +void wl1251_disable_interrupts(struct wl1251 *wl) +{ + wl->if_ops->disable_irq(wl); } static void wl1251_power_off(struct wl1251 *wl) @@ -57,20 +62,6 @@ static void wl1251_power_on(struct wl1251 *wl) wl->set_power(true); } -irqreturn_t wl1251_irq(int irq, void *cookie) -{ - struct wl1251 *wl; - - wl1251_debug(DEBUG_IRQ, "IRQ"); - - wl = cookie; - - schedule_work(&wl->irq_work); - - return IRQ_HANDLED; -} -EXPORT_SYMBOL_GPL(wl1251_irq); - static int wl1251_fetch_firmware(struct wl1251 *wl) { const struct firmware *fw; @@ -1280,7 +1271,6 @@ int wl1251_free_hw(struct wl1251 *wl) wl1251_debugfs_exit(wl); - free_irq(wl->irq, wl); kfree(wl->target_mem_map); kfree(wl->data_path); kfree(wl->fw); diff --git a/drivers/net/wireless/wl12xx/wl1251_sdio.c b/drivers/net/wireless/wl12xx/wl1251_sdio.c index f1d9e76e0484..f7e451fed8b5 100644 --- a/drivers/net/wireless/wl12xx/wl1251_sdio.c +++ b/drivers/net/wireless/wl12xx/wl1251_sdio.c @@ -50,7 +50,12 @@ static struct sdio_func *wl_to_func(struct wl1251 *wl) static void wl1251_sdio_interrupt(struct sdio_func *func) { - wl1251_irq(0, sdio_get_drvdata(func)); + struct wl1251 *wl = sdio_get_drvdata(func); + + wl1251_debug(DEBUG_IRQ, "IRQ"); + + /* FIXME should be synchronous for sdio */ + schedule_work(&wl->irq_work); } static const struct sdio_device_id wl1251_devices[] = { @@ -88,6 +93,24 @@ void wl1251_sdio_reset(struct wl1251 *wl) { } +static void wl1251_sdio_enable_irq(struct wl1251 *wl) +{ + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + sdio_claim_irq(func, wl1251_sdio_interrupt); + sdio_release_host(func); +} + +static void wl1251_sdio_disable_irq(struct wl1251 *wl) +{ + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + sdio_release_irq(func); + sdio_release_host(func); +} + void wl1251_sdio_set_power(bool enable) { } @@ -96,6 +119,8 @@ struct wl1251_if_operations wl1251_sdio_ops = { .read = wl1251_sdio_read, .write = wl1251_sdio_write, .reset = wl1251_sdio_reset, + .enable_irq = wl1251_sdio_enable_irq, + .disable_irq = wl1251_sdio_disable_irq, }; int wl1251_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) @@ -124,21 +149,14 @@ int wl1251_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) sdio_release_host(func); ret = wl1251_init_ieee80211(wl); - sdio_claim_host(func); if (ret) goto disable; - ret = sdio_claim_irq(func, wl1251_sdio_interrupt); - if (ret) - goto no_irq; - - sdio_release_host(func); sdio_set_drvdata(func, wl); return ret; -no_irq: - wl1251_free_hw(wl); disable: + sdio_claim_host(func); sdio_disable_func(func); release: sdio_release_host(func); diff --git a/drivers/net/wireless/wl12xx/wl1251_spi.c b/drivers/net/wireless/wl12xx/wl1251_spi.c index 5967317ef025..7d1031b7a088 100644 --- a/drivers/net/wireless/wl12xx/wl1251_spi.c +++ b/drivers/net/wireless/wl12xx/wl1251_spi.c @@ -31,6 +31,19 @@ #include "reg.h" #include "wl1251_spi.h" +static irqreturn_t wl1251_irq(int irq, void *cookie) +{ + struct wl1251 *wl; + + wl1251_debug(DEBUG_IRQ, "IRQ"); + + wl = cookie; + + schedule_work(&wl->irq_work); + + return IRQ_HANDLED; +} + static struct spi_device *wl_to_spi(struct wl1251 *wl) { return wl->if_priv; @@ -193,10 +206,22 @@ static void wl1251_spi_write(struct wl1251 *wl, int addr, void *buf, wl1251_dump(DEBUG_SPI, "spi_write buf -> ", buf, len); } +static void wl1251_spi_enable_irq(struct wl1251 *wl) +{ + return enable_irq(wl->irq); +} + +static void wl1251_spi_disable_irq(struct wl1251 *wl) +{ + return disable_irq(wl->irq); +} + static const struct wl1251_if_operations wl1251_spi_ops = { .read = wl1251_spi_read, .write = wl1251_spi_write, .reset = wl1251_spi_reset_wake, + .enable_irq = wl1251_spi_enable_irq, + .disable_irq = wl1251_spi_disable_irq, }; static int __devinit wl1251_spi_probe(struct spi_device *spi) @@ -274,6 +299,7 @@ static int __devexit wl1251_spi_remove(struct spi_device *spi) { struct wl1251 *wl = dev_get_drvdata(&spi->dev); + free_irq(wl->irq, wl); wl1251_free_hw(wl); return 0; |