diff options
| author | Havard Skinnemoen <hskinnemoen@google.com> | 2011-12-10 04:51:54 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-10 07:33:48 +0400 |
| commit | 99823f457d5994b3bd3775515578c8bfacc64b04 (patch) | |
| tree | f27376fa4143a6cd9248ca2a52afe8dd8121572f /drivers/usb/class | |
| parent | 7bf01185c5e9ec19f739f7208646dc2e2cf1904b (diff) | |
| download | linux-99823f457d5994b3bd3775515578c8bfacc64b04.tar.xz | |
usb: cdc-acm: Kill ACM_READY() macro completely
The ACM_READY() macro doesn't seem to do anything useful, and it may
prevent tty_wait_until_sent() from working properly when called from
close.
Previously, acm_tty_chars_in_buffer() returned 0 whenever
acm->port.count was 0. This means close() could return before all the
data has actually been written.
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/class')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 3027ada1b812..d9d9340abe60 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -60,8 +60,6 @@ static struct acm *acm_table[ACM_TTY_MINORS]; static DEFINE_MUTEX(acm_table_lock); -#define ACM_READY(acm) (acm && acm->dev && acm->port.count) - /* * acm_table accessors */ @@ -319,9 +317,6 @@ static void acm_ctrl_irq(struct urb *urb) goto exit; } - if (!ACM_READY(acm)) - goto exit; - usb_mark_last_busy(acm->dev); data = (unsigned char *)(dr + 1); @@ -481,8 +476,7 @@ static void acm_write_bulk(struct urb *urb) spin_lock_irqsave(&acm->write_lock, flags); acm_write_done(acm, wb); spin_unlock_irqrestore(&acm->write_lock, flags); - if (ACM_READY(acm)) - schedule_work(&acm->work); + schedule_work(&acm->work); } static void acm_softint(struct work_struct *work) @@ -492,8 +486,6 @@ static void acm_softint(struct work_struct *work) dev_vdbg(&acm->data->dev, "%s\n", __func__); - if (!ACM_READY(acm)) - return; tty = tty_port_tty_get(&acm->port); if (!tty) return; |