diff options
| author | Felipe Balbi <balbi@ti.com> | 2011-03-21 12:25:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-22 17:31:53 -0700 |
| commit | b1c43f82c5aa265442f82dba31ce985ebb7aa71c (patch) | |
| tree | 8b344d8d5355b30e8deff901180edc708a653227 /drivers/misc | |
| parent | e9a470f445271eb157ee860a93b062324402fc3a (diff) | |
| download | linux-b1c43f82c5aa265442f82dba31ce985ebb7aa71c.tar.bz2 | |
tty: make receive_buf() return the amout of bytes received
it makes it simpler to keep track of the amount of
bytes received and simplifies how flush_to_ldisc counts
the remaining bytes. It also fixes a bug of lost bytes
on n_tty when flushing too many bytes via the USB
serial gadget driver.
Tested-by: Stefan Bigler <stefan.bigler@keymile.com>
Tested-by: Toby Gray <toby.gray@realvnc.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/ti-st/st_core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c index 486117f72c9f..cb98a7da98ef 100644 --- a/drivers/misc/ti-st/st_core.c +++ b/drivers/misc/ti-st/st_core.c @@ -744,8 +744,8 @@ static void st_tty_close(struct tty_struct *tty) pr_debug("%s: done ", __func__); } -static void st_tty_receive(struct tty_struct *tty, const unsigned char *data, - char *tty_flags, int count) +static unsigned int st_tty_receive(struct tty_struct *tty, + const unsigned char *data, char *tty_flags, int count) { #ifdef VERBOSE print_hex_dump(KERN_DEBUG, ">in>", DUMP_PREFIX_NONE, @@ -758,6 +758,8 @@ static void st_tty_receive(struct tty_struct *tty, const unsigned char *data, */ st_recv(tty->disc_data, data, count); pr_debug("done %s", __func__); + + return count; } /* wake-up function called in from the TTY layer |