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| author | Alan Cox <alan@linux.intel.com> | 2012-05-22 20:45:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-12 16:09:49 -0700 |
| commit | 1aa3c63cf0a79153ee13c8f82e4eb6c40b66a161 (patch) | |
| tree | 08025ab4bd2647cc69f5e73a27be36e8984203bb /drivers/usb/serial/mct_u232.c | |
| parent | 42ca7da1c2363dbef4ba1b6917c4c02274b6a5e2 (diff) | |
| download | talos-obmc-linux-1aa3c63cf0a79153ee13c8f82e4eb6c40b66a161.tar.gz talos-obmc-linux-1aa3c63cf0a79153ee13c8f82e4eb6c40b66a161.zip | |
USB: mct_u232: Fix incorrect TIOCMSET return
The low level helper returns 1 on success. The ioctl should however return
0. As this is the only user of the helper return, make the helper return 0 or
an error code.
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=43009
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/mct_u232.c')
| -rw-r--r-- | drivers/usb/serial/mct_u232.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index d0ec1aa52719..a71fa0aa0406 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -309,13 +309,16 @@ static int mct_u232_set_modem_ctrl(struct usb_serial *serial, MCT_U232_SET_REQUEST_TYPE, 0, 0, buf, MCT_U232_SET_MODEM_CTRL_SIZE, WDR_TIMEOUT); - if (rc < 0) - dev_err(&serial->dev->dev, - "Set MODEM CTRL 0x%x failed (error = %d)\n", mcr, rc); + kfree(buf); + dbg("set_modem_ctrl: state=0x%x ==> mcr=0x%x", control_state, mcr); - kfree(buf); - return rc; + if (rc < 0) { + dev_err(&serial->dev->dev, + "Set MODEM CTRL 0x%x failed (error = %d)\n", mcr, rc); + return rc; + } + return 0; } /* mct_u232_set_modem_ctrl */ static int mct_u232_get_modem_stat(struct usb_serial *serial, |
