From b1c43f82c5aa265442f82dba31ce985ebb7aa71c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 21 Mar 2011 12:25:08 +0200 Subject: 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 Tested-by: Toby Gray Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/misc/ti-st/st_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/misc/ti-st/st_core.c') 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 -- cgit v1.2.3-55-g7522