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authorJens Axboe <jens.axboe@oracle.com>2007-01-22 20:34:31 +0100
committerAdrian Bunk <bunk@stusta.de>2007-01-22 21:41:23 +0100
commit4c9b69a98c625f00289719ad94e1242d3a1436ea (patch)
tree7f7bbb8183b9aaaeb57137782f4d51bb46a2a04c /drivers
parent6516dfec53f26f6de42785fd27f4e2a42950c793 (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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cdrom/cdrom.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index e866df084a56..55e71b7b3198 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 */