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Message-ID: <20141125211428.GA12346@biggie>
Date: Tue, 25 Nov 2014 21:14:28 +0000
From: Luis de Bethencourt <luis@...ethencourt.com>
To: Joe Perches <joe@...ches.com>
Cc: linux-kernel@...r.kernel.org, jarod@...sonet.com,
m.chehab@...sung.com, gregkh@...uxfoundation.org,
mahfouz.saif.elyazal@...il.com, dan.carpenter@...cle.com,
tuomas.tynkkynen@....fi, gulsah.1004@...il.com,
linux-media@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCH] staging: media: lirc: lirc_zilog.c: fix quoted strings
split across lines
On Tue, Nov 25, 2014 at 01:00:07PM -0800, Joe Perches wrote:
> 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.
Wasn't sure about the scope of the style fixing
patches. I've been reading Kernel Newbies and
this looked like a good way to start
contributing. Good to know more exhaustive
changes are welcome.
>
> 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
Great ideas.
Should this have been all included in one patch,
or each as part of a series with the previous
one?
Want to take the opportunity to learn about the
process.
>
> 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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