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TTY: jsm, remove superfluous check

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data_len in jsm_input cannot be zero as we would jump out early in the
function. It also cannot be negative because it is an int and we do
bitwise and with 8192. So remove the check.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2013-03-07 13:12:25 +01:00 committed by Greg Kroah-Hartman
parent 6be06e7273
commit b1622e0ac1
1 changed files with 0 additions and 6 deletions
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6
drivers/tty/serial/jsm/jsm_tty.c
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@ -596,12 +596,6 @@ void jsm_input(struct jsm_channel *ch)
jsm_dbg(READ, &ch->ch_bd->pci_dev, "start 2\n");
if (data_len <= 0) {
spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
jsm_dbg(READ, &ch->ch_bd->pci_dev, "jsm_input 1\n");
return;
}
len = tty_buffer_request_room(port, data_len);
n = len;