Message-ID: <1416949207.8358.14.camel@perches.com>
Subject: Re: [PATCH] staging: media: lirc: lirc_zilog.c: fix quoted strings
 split across lines
From: Joe Perches <joe@perches.com>
To: Luis de Bethencourt <luis@debethencourt.com>
Cc: linux-kernel@vger.kernel.org, jarod@wilsonet.com, m.chehab@samsung.com,
        gregkh@linuxfoundation.org, mahfouz.saif.elyazal@gmail.com,
        dan.carpenter@oracle.com, tuomas.tynkkynen@iki.fi,
        gulsah.1004@gmail.com, linux-media@vger.kernel.org,
        devel@driverdev.osuosl.org
Date: Tue, 25 Nov 2014 13:00:07 -0800
In-Reply-To: <20141125204056.GA12162@biggie>
References: <20141125201905.GA10900@biggie>
	 <1416947244.8358.12.camel@perches.com> <20141125204056.GA12162@biggie>
Content-Type: text/plain; charset="ISO-8859-1"
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org

On Tue, 2014-11-25 at 20:40 +0000, Luis de Bethencourt wrote:
> On Tue, Nov 25, 2014 at 12:27:24PM -0800, Joe Perches wrote:
> > On Tue, 2014-11-25 at 20:19 +0000, Luis de Bethencourt wrote:
> > > checkpatch makes an exception to the 80-colum rule for quotes strings, and
> > > Documentation/CodingStyle recommends not splitting quotes strings across lines
> > > because it breaks the ability to grep for the string. Fixing these.
> > []
> > > diff --git a/drivers/staging/media/lirc/lirc_zilog.c b/drivers/staging/media/lirc/lirc_zilog.c
> > []
> > > @@ -794,8 +792,7 @@ static int fw_load(struct IR_tx *tx)
> > >  	if (!read_uint8(&data, tx_data->endp, &version))
> > >  		goto corrupt;
> > >  	if (version != 1) {
> > > -		dev_err(tx->ir->l.dev, "unsupported code set file version (%u, expected"
> > > -			    "1) -- please upgrade to a newer driver",
> > > +		dev_err(tx->ir->l.dev, "unsupported code set file version (%u, expected1) -- please upgrade to a newer driver",
> > >  			    version);
> > 
> > Hello Luis.
> > 
> > Please look at the strings being coalesced before
> > submitting patches.
> > 
> > It's a fairly common defect to have either a missing
> > space between the coalesced fragments or too mano
> > spaces.
> > 
> > It's almost certain that there should be a space
> > between the "expected" and "1" here.
> > 
> > 
> 
> Hello Joe,
> 
> Thanks for taking the time to review this. I sent a new
> version fixing the missing space. 

Thanks.

In the future, you might consider being more
comprehensive with your patches.

This code could be neatened a bit by:

o using another set of logging macros
o removing the unnecessary ftrace like logging
o realigning arguments

Something like:

---
 drivers/staging/media/lirc/lirc_zilog.c | 151 +++++++++++++++-----------------
 1 file changed, 73 insertions(+), 78 deletions(-)

diff --git a/drivers/staging/media/lirc/lirc_zilog.c b/drivers/staging/media/lirc/lirc_zilog.c
index bebb9f1..523af12 100644
--- a/drivers/staging/media/lirc/lirc_zilog.c
+++ b/drivers/staging/media/lirc/lirc_zilog.c
@@ -158,6 +158,17 @@ static bool debug;	/* debug output */
 static bool tx_only;	/* only handle the IR Tx function */
 static int minor = -1;	/* minor number */
 
+/* logging macros */
+#define ir_err(ir, fmt, ...)				\
+	dev_err((ir)->l.dev, fmt, ##__VA_ARGS__)
+#define ir_warn(ir, fmt, ...)				\
+	dev_warn((ir)->l.dev, fmt, ##__VA_ARGS__)
+#define ir_notice(ir, fmt, ...)				\
+	dev_notice((ir)->l.dev, fmt, ##__VA_ARGS__)
+#define ir_info(ir, fmt, ...)				\
+	dev_info((ir)->l.dev, fmt, ##__VA_ARGS__)
+#define ir_dbg(ir, fmt, ...)				\
+	dev_dbg((ir)->l.dev, fmt, ##__VA_ARGS__)
 
 /* struct IR reference counting */
 static struct IR *get_ir_device(struct IR *ir, bool ir_devices_lock_held)
@@ -322,7 +333,7 @@ static int add_to_buf(struct IR *ir)
 	struct IR_tx *tx;
 
 	if (lirc_buffer_full(rbuf)) {
-		dev_dbg(ir->l.dev, "buffer overflow\n");
+		ir_dbg(ir, "buffer overflow\n");
 		return -EOVERFLOW;
 	}
 
@@ -368,18 +379,15 @@ static int add_to_buf(struct IR *ir)
 		 */
 		ret = i2c_master_send(rx->c, sendbuf, 1);
 		if (ret != 1) {
-			dev_err(ir->l.dev, "i2c_master_send failed with %d\n",
-					   ret);
+			ir_err(ir, "i2c_master_send failed with %d\n", ret);
 			if (failures >= 3) {
 				mutex_unlock(&ir->ir_lock);
-				dev_err(ir->l.dev, "unable to read from the IR chip "
-					    "after 3 resets, giving up\n");
+				ir_err(ir, "unable to read from the IR chip after 3 resets, giving up\n");
 				break;
 			}
 
 			/* Looks like the chip crashed, reset it */
-			dev_err(ir->l.dev, "polling the IR receiver chip failed, "
-				    "trying reset\n");
+			ir_err(ir, "polling the IR receiver chip failed, trying reset\n");
 
 			set_current_state(TASK_UNINTERRUPTIBLE);
 			if (kthread_should_stop()) {
@@ -405,14 +413,13 @@ static int add_to_buf(struct IR *ir)
 		ret = i2c_master_recv(rx->c, keybuf, sizeof(keybuf));
 		mutex_unlock(&ir->ir_lock);
 		if (ret != sizeof(keybuf)) {
-			dev_err(ir->l.dev, "i2c_master_recv failed with %d -- "
-				    "keeping last read buffer\n", ret);
+			ir_err(ir, "i2c_master_recv failed with %d -- keeping last read buffer\n",
+			       ret);
 		} else {
 			rx->b[0] = keybuf[3];
 			rx->b[1] = keybuf[4];
 			rx->b[2] = keybuf[5];
-			dev_dbg(ir->l.dev, "key (0x%02x/0x%02x)\n",
-					   rx->b[0], rx->b[1]);
+			ir_dbg(ir, "key (0x%02x/0x%02x)\n", rx->b[0], rx->b[1]);
 		}
 
 		/* key pressed ? */
@@ -463,7 +470,7 @@ static int lirc_thread(void *arg)
 	struct IR *ir = arg;
 	struct lirc_buffer *rbuf = ir->l.rbuf;
 
-	dev_dbg(ir->l.dev, "poll thread started\n");
+	ir_dbg(ir, "poll thread started\n");
 
 	while (!kthread_should_stop()) {
 		set_current_state(TASK_INTERRUPTIBLE);
@@ -491,7 +498,7 @@ static int lirc_thread(void *arg)
 			wake_up_interruptible(&rbuf->wait_poll);
 	}
 
-	dev_dbg(ir->l.dev, "poll thread ended\n");
+	ir_dbg(ir, "poll thread ended\n");
 	return 0;
 }
 
@@ -653,11 +660,10 @@ static int send_data_block(struct IR_tx *tx, unsigned char *data_block)
 		buf[0] = (unsigned char)(i + 1);
 		for (j = 0; j < tosend; ++j)
 			buf[1 + j] = data_block[i + j];
-		dev_dbg(tx->ir->l.dev, "%*ph", 5, buf);
+		ir_dbg(tx->ir, "%*ph\n", 5, buf);
 		ret = i2c_master_send(tx->c, buf, tosend + 1);
 		if (ret != tosend + 1) {
-			dev_err(tx->ir->l.dev, "i2c_master_send failed with %d\n",
-					       ret);
+			ir_err(tx->ir, "i2c_master_send failed with %d\n", ret);
 			return ret < 0 ? ret : -EFAULT;
 		}
 		i += tosend;
@@ -681,7 +687,7 @@ static int send_boot_data(struct IR_tx *tx)
 	buf[1] = 0x20;
 	ret = i2c_master_send(tx->c, buf, 2);
 	if (ret != 2) {
-		dev_err(tx->ir->l.dev, "i2c_master_send failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_send failed with %d\n", ret);
 		return ret < 0 ? ret : -EFAULT;
 	}
 
@@ -698,23 +704,23 @@ static int send_boot_data(struct IR_tx *tx)
 	}
 
 	if (ret != 1) {
-		dev_err(tx->ir->l.dev, "i2c_master_send failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_send failed with %d\n", ret);
 		return ret < 0 ? ret : -EFAULT;
 	}
 
 	/* Here comes the firmware version... (hopefully) */
 	ret = i2c_master_recv(tx->c, buf, 4);
 	if (ret != 4) {
-		dev_err(tx->ir->l.dev, "i2c_master_recv failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_recv failed with %d\n", ret);
 		return 0;
 	}
 	if ((buf[0] != 0x80) && (buf[0] != 0xa0)) {
-		dev_err(tx->ir->l.dev, "unexpected IR TX init response: %02x\n",
-				       buf[0]);
+		ir_err(tx->ir, "unexpected IR TX init response: %02x\n",
+		       buf[0]);
 		return 0;
 	}
-	dev_notice(tx->ir->l.dev, "Zilog/Hauppauge IR blaster firmware version "
-		     "%d.%d.%d loaded\n", buf[1], buf[2], buf[3]);
+	ir_notice(tx->ir, "Zilog/Hauppauge IR blaster firmware version %d.%d.%d loaded\n",
+		  buf[1], buf[2], buf[3]);
 
 	return 0;
 }
@@ -761,12 +767,12 @@ static int fw_load(struct IR_tx *tx)
 	/* Request codeset data file */
 	ret = request_firmware(&fw_entry, "haup-ir-blaster.bin", tx->ir->l.dev);
 	if (ret != 0) {
-		dev_err(tx->ir->l.dev, "firmware haup-ir-blaster.bin not available (%d)\n",
-			    ret);
+		ir_err(tx->ir, "firmware haup-ir-blaster.bin not available (%d)\n",
+		       ret);
 		ret = ret < 0 ? ret : -EFAULT;
 		goto out;
 	}
-	dev_dbg(tx->ir->l.dev, "firmware of size %zu loaded\n", fw_entry->size);
+	ir_dbg(tx->ir, "firmware of size %zu loaded\n", fw_entry->size);
 
 	/* Parse the file */
 	tx_data = vmalloc(sizeof(*tx_data));
@@ -794,9 +800,8 @@ static int fw_load(struct IR_tx *tx)
 	if (!read_uint8(&data, tx_data->endp, &version))
 		goto corrupt;
 	if (version != 1) {
-		dev_err(tx->ir->l.dev, "unsupported code set file version (%u, expected"
-			    "1) -- please upgrade to a newer driver",
-			    version);
+		ir_err(tx->ir, "unsupported code set file version (%u, expected 1) -- please upgrade to a newer driver\n",
+		       version);
 		fw_unload_locked();
 		ret = -EFAULT;
 		goto out;
@@ -811,8 +816,8 @@ static int fw_load(struct IR_tx *tx)
 			      &tx_data->num_code_sets))
 		goto corrupt;
 
-	dev_dbg(tx->ir->l.dev, "%u IR blaster codesets loaded\n",
-			       tx_data->num_code_sets);
+	ir_dbg(tx->ir, "%u IR blaster codesets loaded\n",
+	       tx_data->num_code_sets);
 
 	tx_data->code_sets = vmalloc(
 		tx_data->num_code_sets * sizeof(char *));
@@ -876,7 +881,7 @@ static int fw_load(struct IR_tx *tx)
 	goto out;
 
 corrupt:
-	dev_err(tx->ir->l.dev, "firmware is corrupt\n");
+	ir_err(tx->ir, "firmware is corrupt\n");
 	fw_unload_locked();
 	ret = -EFAULT;
 
@@ -896,9 +901,8 @@ static ssize_t read(struct file *filep, char __user *outbuf, size_t n,
 	unsigned int m;
 	DECLARE_WAITQUEUE(wait, current);
 
-	dev_dbg(ir->l.dev, "read called\n");
 	if (n % rbuf->chunk_size) {
-		dev_dbg(ir->l.dev, "read result = -EINVAL\n");
+		ir_dbg(ir, "read result = -EINVAL\n");
 		return -EINVAL;
 	}
 
@@ -942,8 +946,8 @@ static ssize_t read(struct file *filep, char __user *outbuf, size_t n,
 			unsigned char buf[MAX_XFER_SIZE];
 
 			if (rbuf->chunk_size > sizeof(buf)) {
-				dev_err(ir->l.dev, "chunk_size is too big (%d)!\n",
-					    rbuf->chunk_size);
+				ir_err(ir, "chunk_size is too big (%d)!\n",
+				       rbuf->chunk_size);
 				ret = -EINVAL;
 				break;
 			}
@@ -956,7 +960,7 @@ static ssize_t read(struct file *filep, char __user *outbuf, size_t n,
 				retries++;
 			}
 			if (retries >= 5) {
-				dev_err(ir->l.dev, "Buffer read failed!\n");
+				ir_err(ir, "Buffer read failed!\n");
 				ret = -EIO;
 			}
 		}
@@ -966,8 +970,7 @@ static ssize_t read(struct file *filep, char __user *outbuf, size_t n,
 	put_ir_rx(rx, false);
 	set_current_state(TASK_RUNNING);
 
-	dev_dbg(ir->l.dev, "read result = %d (%s)\n",
-			   ret, ret ? "Error" : "OK");
+	ir_dbg(ir, "read result = %d (%s)\n", ret, ret ? "Error" : "OK");
 
 	return ret ? ret : written;
 }
@@ -983,8 +986,8 @@ static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
 	ret = get_key_data(data_block, code, key);
 
 	if (ret == -EPROTO) {
-		dev_err(tx->ir->l.dev, "failed to get data for code %u, key %u -- check "
-			    "lircd.conf entries\n", code, key);
+		ir_err(tx->ir, "failed to get data for code %u, key %u -- check lircd.conf entries\n",
+		       code, key);
 		return ret;
 	} else if (ret != 0)
 		return ret;
@@ -999,7 +1002,7 @@ static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
 	buf[1] = 0x40;
 	ret = i2c_master_send(tx->c, buf, 2);
 	if (ret != 2) {
-		dev_err(tx->ir->l.dev, "i2c_master_send failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_send failed with %d\n", ret);
 		return ret < 0 ? ret : -EFAULT;
 	}
 
@@ -1012,19 +1015,18 @@ static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
 	}
 
 	if (ret != 1) {
-		dev_err(tx->ir->l.dev, "i2c_master_send failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_send failed with %d\n", ret);
 		return ret < 0 ? ret : -EFAULT;
 	}
 
 	/* Send finished download? */
 	ret = i2c_master_recv(tx->c, buf, 1);
 	if (ret != 1) {
-		dev_err(tx->ir->l.dev, "i2c_master_recv failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_recv failed with %d\n", ret);
 		return ret < 0 ? ret : -EFAULT;
 	}
 	if (buf[0] != 0xA0) {
-		dev_err(tx->ir->l.dev, "unexpected IR TX response #1: %02x\n",
-			buf[0]);
+		ir_err(tx->ir, "unexpected IR TX response #1: %02x\n", buf[0]);
 		return -EFAULT;
 	}
 
@@ -1033,7 +1035,7 @@ static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
 	buf[1] = 0x80;
 	ret = i2c_master_send(tx->c, buf, 2);
 	if (ret != 2) {
-		dev_err(tx->ir->l.dev, "i2c_master_send failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_send failed with %d\n", ret);
 		return ret < 0 ? ret : -EFAULT;
 	}
 
@@ -1043,7 +1045,7 @@ static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
 	 * going to skip this whole mess and say we're done on the HD PVR
 	 */
 	if (!tx->post_tx_ready_poll) {
-		dev_dbg(tx->ir->l.dev, "sent code %u, key %u\n", code, key);
+		ir_dbg(tx->ir, "sent code %u, key %u\n", code, key);
 		return 0;
 	}
 
@@ -1059,29 +1061,28 @@ static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
 		ret = i2c_master_send(tx->c, buf, 1);
 		if (ret == 1)
 			break;
-		dev_dbg(tx->ir->l.dev, "NAK expected: i2c_master_send "
-			"failed with %d (try %d)\n", ret, i+1);
+		ir_dbg(tx->ir, "NAK expected: i2c_master_send failed with %d (try %d)\n",
+		       ret, i + 1);
 	}
 	if (ret != 1) {
-		dev_err(tx->ir->l.dev, "IR TX chip never got ready: last i2c_master_send "
-			    "failed with %d\n", ret);
+		ir_err(tx->ir, "IR TX chip never got ready: last i2c_master_send failed with %d\n",
+		       ret);
 		return ret < 0 ? ret : -EFAULT;
 	}
 
 	/* Seems to be an 'ok' response */
 	i = i2c_master_recv(tx->c, buf, 1);
 	if (i != 1) {
-		dev_err(tx->ir->l.dev, "i2c_master_recv failed with %d\n", ret);
+		ir_err(tx->ir, "i2c_master_recv failed with %d\n", ret);
 		return -EFAULT;
 	}
 	if (buf[0] != 0x80) {
-		dev_err(tx->ir->l.dev, "unexpected IR TX response #2: %02x\n",
-				       buf[0]);
+		ir_err(tx->ir, "unexpected IR TX response #2: %02x\n", buf[0]);
 		return -EFAULT;
 	}
 
 	/* Oh good, it worked */
-	dev_dbg(tx->ir->l.dev, "sent code %u, key %u\n", code, key);
+	ir_dbg(tx->ir, "sent code %u, key %u\n", code, key);
 	return 0;
 }
 
@@ -1167,12 +1168,10 @@ static ssize_t write(struct file *filep, const char __user *buf, size_t n,
 		 */
 		if (ret != 0) {
 			/* Looks like the chip crashed, reset it */
-			dev_err(tx->ir->l.dev, "sending to the IR transmitter chip "
-				    "failed, trying reset\n");
+			ir_err(tx->ir, "sending to the IR transmitter chip failed, trying reset\n");
 
 			if (failures >= 3) {
-				dev_err(tx->ir->l.dev, "unable to send to the IR chip "
-					    "after 3 resets, giving up\n");
+				ir_err(tx->ir, "unable to send to the IR chip after 3 resets, giving up\n");
 				mutex_unlock(&ir->ir_lock);
 				mutex_unlock(&tx->client_lock);
 				put_ir_tx(tx, false);
@@ -1206,15 +1205,13 @@ static unsigned int poll(struct file *filep, poll_table *wait)
 	struct lirc_buffer *rbuf = ir->l.rbuf;
 	unsigned int ret;
 
-	dev_dbg(ir->l.dev, "poll called\n");
-
 	rx = get_ir_rx(ir);
 	if (rx == NULL) {
 		/*
 		 * Revisit this, if our poll function ever reports writeable
 		 * status for Tx
 		 */
-		dev_dbg(ir->l.dev, "poll result = POLLERR\n");
+		ir_dbg(ir, "poll result = POLLERR\n");
 		return POLLERR;
 	}
 
@@ -1227,8 +1224,7 @@ static unsigned int poll(struct file *filep, poll_table *wait)
 	/* Indicate what ops could happen immediately without blocking */
 	ret = lirc_buffer_empty(rbuf) ? 0 : (POLLIN|POLLRDNORM);
 
-	dev_dbg(ir->l.dev, "poll result = %s\n",
-			   ret ? "POLLIN|POLLRDNORM" : "none");
+	ir_dbg(ir, "poll result = %s\n", ret ? "POLLIN|POLLRDNORM" : "none");
 	return ret;
 }
 
@@ -1335,7 +1331,7 @@ static int close(struct inode *node, struct file *filep)
 	struct IR *ir = filep->private_data;
 
 	if (ir == NULL) {
-		dev_err(ir->l.dev, "close: no private_data attached to the file!\n");
+		ir_err(ir, "close: no private_data attached to the file!\n");
 		return -ENODEV;
 	}
 
@@ -1542,8 +1538,8 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 
 		/* Proceed only if the Rx client is also ready or not needed */
 		if (rx == NULL && !tx_only) {
-			dev_info(tx->ir->l.dev, "probe of IR Tx on %s (i2c-%d) done. Waiting"
-				   " on IR Rx.\n", adap->name, adap->nr);
+			ir_info(tx->ir, "probe of IR Tx on %s (i2c-%d) done. Waiting on IR Rx.\n",
+				adap->name, adap->nr);
 			goto out_ok;
 		}
 	} else {
@@ -1581,8 +1577,8 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 				       "zilog-rx-i2c-%d", adap->nr);
 		if (IS_ERR(rx->task)) {
 			ret = PTR_ERR(rx->task);
-			dev_err(tx->ir->l.dev, "%s: could not start IR Rx polling thread"
-				    "\n", __func__);
+			ir_err(tx->ir, "%s: could not start IR Rx polling thread\n",
+			       __func__);
 			/* Failed kthread, so put back the ir ref */
 			put_ir_device(ir, true);
 			/* Failure exit, so put back rx ref from i2c_client */
@@ -1604,13 +1600,13 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	ir->l.minor = minor; /* module option: user requested minor number */
 	ir->l.minor = lirc_register_driver(&ir->l);
 	if (ir->l.minor < 0 || ir->l.minor >= MAX_IRCTL_DEVICES) {
-		dev_err(tx->ir->l.dev, "%s: \"minor\" must be between 0 and %d (%d)!\n",
-			    __func__, MAX_IRCTL_DEVICES-1, ir->l.minor);
+		ir_err(tx->ir, "%s: \"minor\" must be between 0 and %d (%d)!\n",
+		       __func__, MAX_IRCTL_DEVICES - 1, ir->l.minor);
 		ret = -EBADRQC;
 		goto out_put_xx;
 	}
-	dev_info(ir->l.dev, "IR unit on %s (i2c-%d) registered as lirc%d and ready\n",
-		   adap->name, adap->nr, ir->l.minor);
+	ir_info(ir, "IR unit on %s (i2c-%d) registered as lirc%d and ready\n",
+		adap->name, adap->nr, ir->l.minor);
 
 out_ok:
 	if (rx != NULL)
@@ -1618,8 +1614,8 @@ out_ok:
 	if (tx != NULL)
 		put_ir_tx(tx, true);
 	put_ir_device(ir, true);
-	dev_info(ir->l.dev, "probe of IR %s on %s (i2c-%d) done\n",
-		   tx_probe ? "Tx" : "Rx", adap->name, adap->nr);
+	ir_info(ir, "probe of IR %s on %s (i2c-%d) done\n",
+		tx_probe ? "Tx" : "Rx", adap->name, adap->nr);
 	mutex_unlock(&ir_devices_lock);
 	return 0;
 
@@ -1632,8 +1628,7 @@ out_put_ir:
 	put_ir_device(ir, true);
 out_no_ir:
 	dev_err(&client->dev, "%s: probing IR %s on %s (i2c-%d) failed with %d\n",
-		    __func__, tx_probe ? "Tx" : "Rx", adap->name, adap->nr,
-		   ret);
+		__func__, tx_probe ? "Tx" : "Rx", adap->name, adap->nr, ret);
 	mutex_unlock(&ir_devices_lock);
 	return ret;
 }


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