| commit | e5fbab51b4219fbd1dab28666affe38a920b5f7e | |
| author | David Brownell <dbrownell@users.sourceforge.net> | |
| Thu, 7 Aug 2008 01:46:10 +0000 (6 18:46 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Thu, 14 Aug 2008 00:32:57 +0000 (13 17:32 -0700) | ||
| tree | dc2d6ff5467f4eff183de712eb13403d35d13351 | treesnapshot (tar.gz zip) |
| parent | 934da4635c2d05cef474e5243ef05df95b2ad264 | commitdiff |
usb: cdc-acm: drain writes on close
Add a mechanism to let the write queue drain naturally before
closing the TTY, rather than always losing that data. There
is a timeout, so it can't wait too long.
Provide missing locking inside acm_wb_is_avail(); it matters
more now. Note, this presumes an earlier patch was applied,
removing a call to this routine where the lock was held.
Slightly improved diagnostics on write URB completion, so we
can tell when a write URB gets killed and, if so, how much
data it wrote first ... and so that I/O path is normally
silent (and can't much change timings).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add a mechanism to let the write queue drain naturally before
closing the TTY, rather than always losing that data. There
is a timeout, so it can't wait too long.
Provide missing locking inside acm_wb_is_avail(); it matters
more now. Note, this presumes an earlier patch was applied,
removing a call to this routine where the lock was held.
Slightly improved diagnostics on write URB completion, so we
can tell when a write URB gets killed and, if so, how much
data it wrote first ... and so that I/O path is normally
silent (and can't much change timings).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/usb/class/cdc-acm.c | diffblobblamehistory | |
| drivers/usb/class/cdc-acm.h | diffblobblamehistory |