From: Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
To: linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org
Subject: [PATCH] mct_u232: Fix incorrect TIOCMSET return
Date: Tue, 22 May 2012 20:45:13 +0100 [thread overview]
Message-ID: <20120522194508.16448.68332.stgit@bluebook> (raw)
From: Alan Cox <alan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
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-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
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 d0ec1aa..a71fa0a 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,
--
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reply other threads:[~2012-05-22 19:45 UTC|newest]
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