From a3ce6ea46cc0d6397d1b92b1a5983bb2935306ed Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 28 May 2009 09:51:31 -0700 Subject: Input: libps2 - better handle bad scheduler decisions Sometimes devices send us their responses in time but due to unfortunate scheduling decisions the receiving thread does not get scheduled till much later and we erroneously decide that device timed out. Work around this problem by checking whether we received the data we needed instead of checking timeout condition. Tested-by: Sitsofe Wheeler Signed-off-by: Dmitry Torokhov --- drivers/input/serio/libps2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/input') diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c index 67248c31e19a..be5bbbb8ae4e 100644 --- a/drivers/input/serio/libps2.c +++ b/drivers/input/serio/libps2.c @@ -210,7 +210,7 @@ int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command) timeout = wait_event_timeout(ps2dev->wait, !(ps2dev->flags & PS2_FLAG_CMD1), timeout); - if (ps2dev->cmdcnt && timeout > 0) { + if (ps2dev->cmdcnt && !(ps2dev->flags & PS2_FLAG_CMD1)) { timeout = ps2_adjust_timeout(ps2dev, command, timeout); wait_event_timeout(ps2dev->wait, -- cgit v1.2.2