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| author | Alan Cox <alan@linux.intel.com> | 2010-02-18 16:44:01 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:55:12 -0800 |
| commit | a108bfcb372d8c4452701039308fb95747911c59 (patch) | |
| tree | 3528621937692e28081f71131cddc3130e2641ad /drivers/usb/serial/pl2303.c | |
| parent | 2832fc11f1360668482beec06dbcd631ae5f0cf1 (diff) | |
| download | kernel_samsung_smdk4412-a108bfcb372d8c4452701039308fb95747911c59.zip kernel_samsung_smdk4412-a108bfcb372d8c4452701039308fb95747911c59.tar.gz kernel_samsung_smdk4412-a108bfcb372d8c4452701039308fb95747911c59.tar.bz2 | |
USB: tty: Prune uses of tty_request_room in the USB layer
We have lots of callers that do not need to do this in the first place.
Remove the calls as they both cost CPU and for big buffers can mess up the
multi-page allocation avoidance.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/pl2303.c')
| -rw-r--r-- | drivers/usb/serial/pl2303.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 767000c..a3e5a56 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -1042,7 +1042,6 @@ static void pl2303_push_data(struct tty_struct *tty, tty_flag = TTY_FRAME; dbg("%s - tty_flag = %d", __func__, tty_flag); - tty_buffer_request_room(tty, urb->actual_length + 1); /* overrun is special, not associated with a char */ if (line_status & UART_OVERRUN_ERROR) tty_insert_flip_char(tty, 0, TTY_OVERRUN); |