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>
diff --git a/drivers/net/wireless/wl12xx/wl1251_spi.c b/drivers/net/wireless/wl12xx/wl1251_spi.c
index 5967317..7d1031b 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 @@
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 @@
{
struct wl1251 *wl = dev_get_drvdata(&spi->dev);
+ free_irq(wl->irq, wl);
wl1251_free_hw(wl);
return 0;