imrcpan/erofs-linux
1
0 Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git synced 2026-11-13 13:32:25 +01:00
Code Issues Packages Projects Releases Wiki Activity

n_tty: Don't wait for buffer work in read() loop

Browse Source 
User-space read() can run concurrently with receiving from device;
waiting for receive_buf() to complete is not required.

Signed-off-by: Peter Hurley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Peter Hurley authored and Greg Kroah-Hartman committed 2013-07-23 16:43:02 -07:00
1 parent d1913e3916
commit f95499c303
1 file changed
-1
Download Patch File Download Diff File Expand all files Collapse all files
drivers/tty/n_tty.c
-1
View File
@@ -1724,7 +1724,6 @@ static inline int input_available_p(struct tty_struct *tty, int amt)
{
struct n_tty_data *ldata = tty->disc_data;
tty_flush_to_ldisc(tty);
if (ldata->icanon && !L_EXTPROC(tty)) {
if (ldata->canon_head != ldata->read_tail)
return 1;