diff options
| author | Jens Axboe <jens.axboe@oracle.com> | 2007-01-22 20:34:31 +0100 |
|---|---|---|
| committer | Adrian Bunk <bunk@stusta.de> | 2007-01-22 21:41:23 +0100 |
| commit | 4c9b69a98c625f00289719ad94e1242d3a1436ea (patch) | |
| tree | 7f7bbb8183b9aaaeb57137782f4d51bb46a2a04c | |
| parent | 6516dfec53f26f6de42785fd27f4e2a42950c793 (diff) | |
cdrom: set default timeout to 7 seconds
It's a known fact that Windows times out commands after 7 seconds, so
drives generally try and respond if they can before that happens. We
default to 5 seconds, which sometimes is a bit too short.
Jeremy Higdon reported here:
http://lkml.org/lkml/2007/1/1/145
that his drive takes longer than 5 seconds for a "read track
information" command, later confirming that it is about 6.7 seconds.
So just do the sane thing and change the default command timeout to 7
seconds to avoid other surprises.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
| -rw-r--r-- | drivers/cdrom/cdrom.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index e866df084a5..55e71b7b319 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -338,6 +338,12 @@ static const char *mrw_address_space[] = { "DMA", "GAA" }; /* used in the audio ioctls */ #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret +/* + * Another popular OS uses 7 seconds as the hard timeout for default + * commands, so it is a good choice for us as well. + */ +#define CDROM_DEF_TIMEOUT (7 * HZ) + /* Not-exported routines. */ static int open_for_data(struct cdrom_device_info * cdi); static int check_for_audio_disc(struct cdrom_device_info * cdi, @@ -1528,7 +1534,7 @@ void init_cdrom_command(struct packet_command *cgc, void *buf, int len, cgc->buffer = (char *) buf; cgc->buflen = len; cgc->data_direction = type; - cgc->timeout = 5*HZ; + cgc->timeout = CDROM_DEF_TIMEOUT; } /* DVD handling */ |