Re: [PATCH v2 1/3] [ALSA] portman2x4 - whitespace fixes

From: Takashi Iwai
Date: Mon Feb 01 2016 - 09:30:58 EST

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On Sat, 30 Jan 2016 10:33:35 +0100,
Sudip Mukherjee wrote:
>
> checkpatch was complaining about trailing whitespace, multiple blank
> lines and space before tabs. This patch takes care of these issues
> related to whitespace changes and there was no other change.

Note that the motivation of the change should *never* be "because
checkpatch complains". Instead, it should be either "this improves
readability" or "this improves grep-ability."

thanks,

Takashi

>
> Signed-off-by: Sudip Mukherjee <sudip@xxxxxxxxxxxxxxx>
> ---
>
> v2: combined 3 patches of v1 series into this patch.
>
> sound/drivers/portman2x4.c | 77 ++++++++++++++++++++++------------------------
> 1 file changed, 37 insertions(+), 40 deletions(-)
>
> diff --git a/sound/drivers/portman2x4.c b/sound/drivers/portman2x4.c
> index 464385a..65b0650 100644
> --- a/sound/drivers/portman2x4.c
> +++ b/sound/drivers/portman2x4.c
> @@ -57,7 +57,7 @@ static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
> static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
> static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
>
> -static struct platform_device *platform_devices[SNDRV_CARDS];
> +static struct platform_device *platform_devices[SNDRV_CARDS];
> static int device_count;
>
> module_param_array(index, int, NULL, S_IRUGO);
> @@ -105,7 +105,7 @@ static int portman_create(struct snd_card *card,
> *rchip = NULL;
>
> pm = kzalloc(sizeof(struct portman), GFP_KERNEL);
> - if (pm == NULL)
> + if (pm == NULL)
> return -ENOMEM;
>
> /* Init chip specific data */
> @@ -123,24 +123,24 @@ static int portman_create(struct snd_card *card,
> *********************************************************************/
>
> /* Standard PC parallel port status register equates. */
> -#define PP_STAT_BSY 0x80 /* Busy status. Inverted. */
> -#define PP_STAT_ACK 0x40 /* Acknowledge. Non-Inverted. */
> -#define PP_STAT_POUT 0x20 /* Paper Out. Non-Inverted. */
> -#define PP_STAT_SEL 0x10 /* Select. Non-Inverted. */
> -#define PP_STAT_ERR 0x08 /* Error. Non-Inverted. */
> +#define PP_STAT_BSY 0x80 /* Busy status. Inverted. */
> +#define PP_STAT_ACK 0x40 /* Acknowledge. Non-Inverted. */
> +#define PP_STAT_POUT 0x20 /* Paper Out. Non-Inverted. */
> +#define PP_STAT_SEL 0x10 /* Select. Non-Inverted. */
> +#define PP_STAT_ERR 0x08 /* Error. Non-Inverted. */
>
> /* Standard PC parallel port command register equates. */
> -#define PP_CMD_IEN 0x10 /* IRQ Enable. Non-Inverted. */
> -#define PP_CMD_SELI 0x08 /* Select Input. Inverted. */
> -#define PP_CMD_INIT 0x04 /* Init Printer. Non-Inverted. */
> -#define PP_CMD_FEED 0x02 /* Auto Feed. Inverted. */
> +#define PP_CMD_IEN 0x10 /* IRQ Enable. Non-Inverted. */
> +#define PP_CMD_SELI 0x08 /* Select Input. Inverted. */
> +#define PP_CMD_INIT 0x04 /* Init Printer. Non-Inverted. */
> +#define PP_CMD_FEED 0x02 /* Auto Feed. Inverted. */
> #define PP_CMD_STB 0x01 /* Strobe. Inverted. */
>
> /* Parallel Port Command Register as implemented by PCP2x4. */
> -#define INT_EN PP_CMD_IEN /* Interrupt enable. */
> +#define INT_EN PP_CMD_IEN /* Interrupt enable. */
> #define STROBE PP_CMD_STB /* Command strobe. */
>
> -/* The parallel port command register field (b1..b3) selects the
> +/* The parallel port command register field (b1..b3) selects the
> * various "registers" within the PC/P 2x4. These are the internal
> * address of these "registers" that must be written to the parallel
> * port command register.
> @@ -148,7 +148,7 @@ static int portman_create(struct snd_card *card,
> #define RXDATA0 (0 << 1) /* PCP RxData channel 0. */
> #define RXDATA1 (1 << 1) /* PCP RxData channel 1. */
> #define GEN_CTL (2 << 1) /* PCP General Control Register. */
> -#define SYNC_CTL (3 << 1) /* PCP Sync Control Register. */
> +#define SYNC_CTL (3 << 1) /* PCP Sync Control Register. */
> #define TXDATA0 (4 << 1) /* PCP TxData channel 0. */
> #define TXDATA1 (5 << 1) /* PCP TxData channel 1. */
> #define TXDATA2 (6 << 1) /* PCP TxData channel 2. */
> @@ -218,7 +218,7 @@ static inline void portman_write_data(struct portman *pm, u8 value)
> parport_write_data(pm->pardev->port, value);
> }
>
> -static void portman_write_midi(struct portman *pm,
> +static void portman_write_midi(struct portman *pm,
> int port, u8 mididata)
> {
> int command = ((port + 4) << 1);
> @@ -234,20 +234,20 @@ static void portman_write_midi(struct portman *pm,
> */
> command |= INT_EN;
>
> - /* Disable interrupts so that the process is not interrupted, then
> - * write the address associated with the current Tx channel to the
> + /* Disable interrupts so that the process is not interrupted, then
> + * write the address associated with the current Tx channel to the
> * PP Command Reg. Do not set the Strobe signal yet.
> */
>
> do {
> portman_write_command(pm, command);
>
> - /* While the address lines settle, write parallel output data to
> + /* While the address lines settle, write parallel output data to
> * PP Data Reg. This has no effect until Strobe signal is asserted.
> */
>
> portman_write_data(pm, mididata);
> -
> +
> /* If PCP channel's TxEmpty is set (TxEmpty is read through the PP
> * Status Register), then go write data. Else go back and wait.
> */
> @@ -284,7 +284,6 @@ static void portman_write_midi(struct portman *pm,
> /* Data sent. */
> }
>
> -
> /*
> * Read MIDI byte from port
> * Attempt to read input byte from specified hardware input port (0..).
> @@ -357,7 +356,6 @@ static int portman_read_midi(struct portman *pm, int port)
> portman_write_data(pm, 1); /* Cause rising edge, which shifts data. */
> portman_write_data(pm, 0); /* Return data clock low. */
>
> -
> /* De-assert Strobe and return data. */
> portman_write_command(pm, cmdout); /* Output saved address+IE. */
>
> @@ -370,11 +368,12 @@ static int portman_read_midi(struct portman *pm, int port)
>
> /*
> * Checks if any input data on the given channel is available
> - * Checks RxAvail
> + * Checks RxAvail
> */
> static int portman_data_avail(struct portman *pm, int channel)
> {
> int command = INT_EN;
> +
> switch (channel) {
> case 0:
> command |= RXDATA0;
> @@ -393,7 +392,6 @@ static int portman_data_avail(struct portman *pm, int channel)
> return 0;
> }
>
> -
> /*
> * Flushes any input
> */
> @@ -456,7 +454,7 @@ static int portman_probe(struct parport *p)
> * hardware handshake lines to midi box:
> *
> * Strobe = 0
> - * Interrupt Enable = 0
> + * Interrupt Enable = 0
> */
> /* 2 */
> parport_write_control(p, 0);
> @@ -481,7 +479,7 @@ static int portman_probe(struct parport *p)
> /* 7 */
> parport_write_control(p, 0); /* Reset Strobe=0. */
>
> - /* Check if Tx circuitry is functioning properly. If initialized
> + /* Check if Tx circuitry is functioning properly. If initialized
> * unit TxEmpty is false, send out char and see if if goes true.
> */
> /* 8 */
> @@ -567,12 +565,12 @@ static int snd_portman_rawmidi_create(struct snd_card *card)
> struct snd_rawmidi *rmidi;
> struct snd_rawmidi_substream *substream;
> int err;
> -
> - err = snd_rawmidi_new(card, CARD_NAME, 0,
> - PORTMAN_NUM_OUTPUT_PORTS,
> - PORTMAN_NUM_INPUT_PORTS,
> +
> + err = snd_rawmidi_new(card, CARD_NAME, 0,
> + PORTMAN_NUM_OUTPUT_PORTS,
> + PORTMAN_NUM_INPUT_PORTS,
> &rmidi);
> - if (err < 0)
> + if (err < 0)
> return err;
>
> rmidi->private_data = pm;
> @@ -584,9 +582,9 @@ static int snd_portman_rawmidi_create(struct snd_card *card)
> pm->rmidi = rmidi;
>
> /* register rawmidi ops */
> - snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
> + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
> &snd_portman_midi_output);
> - snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
> + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
> &snd_portman_midi_input);
>
> /* name substreams */
> @@ -621,7 +619,7 @@ static void snd_portman_interrupt(void *userdata)
>
> /* While any input data is waiting */
> while ((portman_read_status(pm) & INT_REQ) == INT_REQ) {
> - /* If data available on channel 0,
> + /* If data available on channel 0,
> read it and stuff it into the queue. */
> if (portman_data_avail(pm, 0)) {
> /* Read Midi */
> @@ -632,7 +630,7 @@ static void snd_portman_interrupt(void *userdata)
> &midivalue, 1);
>
> }
> - /* If data available on channel 1,
> + /* If data available on channel 1,
> read it and stuff it into the queue. */
> if (portman_data_avail(pm, 1)) {
> /* Read Midi */
> @@ -658,7 +656,7 @@ static int snd_portman_probe_port(struct parport *p)
> 0, NULL);
> if (!pardev)
> return -EIO;
> -
> +
> if (parport_claim(pardev)) {
> parport_unregister_device(pardev);
> return -EIO;
> @@ -742,7 +740,7 @@ static int snd_portman_probe(struct platform_device *pdev)
>
> if (dev >= SNDRV_CARDS)
> return -ENODEV;
> - if (!enable[dev])
> + if (!enable[dev])
> return -ENOENT;
>
> if ((err = snd_portman_probe_port(p)) < 0)
> @@ -756,7 +754,7 @@ static int snd_portman_probe(struct platform_device *pdev)
> }
> strcpy(card->driver, DRIVER_NAME);
> strcpy(card->shortname, CARD_NAME);
> - sprintf(card->longname, "%s at 0x%lx, irq %i",
> + sprintf(card->longname, "%s at 0x%lx, irq %i",
> card->shortname, p->base, p->irq);
>
> pardev = parport_register_device(p, /* port */
> @@ -779,7 +777,7 @@ static int snd_portman_probe(struct platform_device *pdev)
> }
> card->private_data = pm;
> card->private_free = snd_portman_card_private_free;
> -
> +
> if ((err = snd_portman_rawmidi_create(card)) < 0) {
> snd_printd("Creating Rawmidi component failed\n");
> goto __err;
> @@ -823,7 +821,6 @@ static int snd_portman_remove(struct platform_device *pdev)
> return 0;
> }
>
> -
> static struct platform_driver snd_portman_driver = {
> .probe = snd_portman_probe,
> .remove = snd_portman_remove,
> @@ -844,7 +841,7 @@ static void snd_portman_unregister_all(void)
> platform_device_unregister(platform_devices[i]);
> platform_devices[i] = NULL;
> }
> - }
> + }
> platform_driver_unregister(&snd_portman_driver);
> parport_unregister_driver(&portman_parport_driver);
> }
> --
> 1.9.1
>
>

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