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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-17 17:56:43 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-17 17:56:43 +0200 |
| commit | 43f82216f0bd114599f4a221ae6924f3658a0c9a (patch) | |
| tree | 89dbd85a0a1882ae38e6b61e360b365c018195fd /drivers/input/serio/i8042.c | |
| parent | Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/... (diff) | |
| parent | Input: fm801-gp - handle errors from pci_enable_device() (diff) | |
| download | linux-43f82216f0bd114599f4a221ae6924f3658a0c9a.tar.xz linux-43f82216f0bd114599f4a221ae6924f3658a0c9a.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: fm801-gp - handle errors from pci_enable_device()
Input: gameport core - handle errors returned by device_bind_driver()
Input: serio core - handle errors returned by device_bind_driver()
Lockdep: fix compile error in drivers/input/serio/serio.c
Input: serio - add lockdep annotations
Lockdep: add lockdep_set_class_and_subclass() and lockdep_set_subclass()
Input: atkbd - supress "too many keys" error message
Input: i8042 - supress ACK/NAKs when blinking during panic
Input: add missing exports to fix modular build
Diffstat (limited to 'drivers/input/serio/i8042.c')
| -rw-r--r-- | drivers/input/serio/i8042.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 09b06e605b50..7e3141f37e32 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -106,6 +106,7 @@ static unsigned char i8042_ctr; static unsigned char i8042_mux_present; static unsigned char i8042_kbd_irq_registered; static unsigned char i8042_aux_irq_registered; +static unsigned char i8042_suppress_kbd_ack; static struct platform_device *i8042_platform_device; static irqreturn_t i8042_interrupt(int irq, void *dev_id); @@ -316,7 +317,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id) unsigned char str, data; unsigned int dfl; unsigned int port_no; - int ret; + int ret = 1; spin_lock_irqsave(&i8042_lock, flags); str = i8042_read_status(); @@ -378,10 +379,16 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id) dfl & SERIO_PARITY ? ", bad parity" : "", dfl & SERIO_TIMEOUT ? ", timeout" : ""); + if (unlikely(i8042_suppress_kbd_ack)) + if (port_no == I8042_KBD_PORT_NO && + (data == 0xfa || data == 0xfe)) { + i8042_suppress_kbd_ack = 0; + goto out; + } + if (likely(port->exists)) serio_interrupt(port->serio, data, dfl); - ret = 1; out: return IRQ_RETVAL(ret); } @@ -842,11 +849,13 @@ static long i8042_panic_blink(long count) led ^= 0x01 | 0x04; while (i8042_read_status() & I8042_STR_IBF) DELAY; + i8042_suppress_kbd_ack = 1; i8042_write_data(0xed); /* set leds */ DELAY; while (i8042_read_status() & I8042_STR_IBF) DELAY; DELAY; + i8042_suppress_kbd_ack = 1; i8042_write_data(led); DELAY; last_blink = count; |