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Date: Wed, 13 Dec 2017 11:50:19 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Aniruddha Shastri <aniruddha.shastri@...il.com>
Cc: devel@...verdev.osuosl.org,
Christopher Mårtensson <cribalik@...il.com>,
linux-kernel@...r.kernel.org, Ian Abbott <abbotti@....co.uk>,
Saber Rezvani <irsaber@...il.com>,
Matthew Giassa <matthew@...ssa.net>,
Karthik Nayak <karthik.188@...il.com>
Subject: Re: [PATCH] staging: comedi: ni_*
On Wed, Dec 13, 2017 at 04:01:04AM -0600, Aniruddha Shastri wrote:
> Fix checkpatch warnings by shortening lines and reorganizing code where needed..
> Re-phrase the assert messages in ni_mio_common.c. This was done to meet the character limit for the message.
And yet this line is over the character length :)
>
> Signed-off-by: Aniruddha Shastri <aniruddha.shastri@...il.com>
> ---
> drivers/staging/comedi/drivers/ni_670x.c | 3 +-
> drivers/staging/comedi/drivers/ni_atmio.c | 8 +++--
> drivers/staging/comedi/drivers/ni_labpc_common.c | 13 +++-----
> drivers/staging/comedi/drivers/ni_mio_common.c | 39 ++++++++++++------------
> drivers/staging/comedi/drivers/ni_stc.h | 2 +-
> 5 files changed, 33 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/staging/comedi/drivers/ni_670x.c b/drivers/staging/comedi/drivers/ni_670x.c
> index 1d3ff60..330536a 100644
> --- a/drivers/staging/comedi/drivers/ni_670x.c
> +++ b/drivers/staging/comedi/drivers/ni_670x.c
> @@ -207,9 +207,10 @@ static int ni_670x_auto_attach(struct comedi_device *dev,
> s->maxdata = 0xffff;
> if (s->n_chan == 32) {
> const struct comedi_lrange **range_table_list;
> + unsigned int range_size = sizeof(const struct comedi_lrange *);
>
> range_table_list = kmalloc_array(32,
> - sizeof(struct comedi_lrange *),
> + range_size,
Not worth changing.
> GFP_KERNEL);
> if (!range_table_list)
> return -ENOMEM;
> diff --git a/drivers/staging/comedi/drivers/ni_atmio.c b/drivers/staging/comedi/drivers/ni_atmio.c
> index ae6ed96..6c0e91e 100644
> --- a/drivers/staging/comedi/drivers/ni_atmio.c
> +++ b/drivers/staging/comedi/drivers/ni_atmio.c
> @@ -233,10 +233,12 @@ static int ni_isapnp_find_board(struct pnp_dev **dev)
> int i;
>
> for (i = 0; i < ARRAY_SIZE(ni_boards); i++) {
> + int isapnp_id = ni_boards[i].isapnp_id;
> +
> isapnp_dev = pnp_find_dev(NULL,
> - ISAPNP_VENDOR('N', 'I', 'C'),
> - ISAPNP_FUNCTION(ni_boards[i].
> - isapnp_id), NULL);
> + ISAPNP_VENDOR('N', 'I', 'C'),
> + ISAPNP_FUNCTION(isapnp_id),
> + NULL);
Not worth changing, please leave as-is.
>
> if (!isapnp_dev || !isapnp_dev->card)
> continue;
> diff --git a/drivers/staging/comedi/drivers/ni_labpc_common.c b/drivers/staging/comedi/drivers/ni_labpc_common.c
> index b0dfb8e..f29218f 100644
> --- a/drivers/staging/comedi/drivers/ni_labpc_common.c
> +++ b/drivers/staging/comedi/drivers/ni_labpc_common.c
> @@ -568,15 +568,12 @@ static int labpc_ai_cmdtest(struct comedi_device *dev,
>
> /* make sure scan timing is not too fast */
> if (cmd->scan_begin_src == TRIG_TIMER) {
> - if (cmd->convert_src == TRIG_TIMER) {
> - err |= comedi_check_trigger_arg_min(&cmd->
> - scan_begin_arg,
> - cmd->convert_arg *
> - cmd->chanlist_len);
> - }
> + unsigned int expected = board->ai_speed * cmd->chanlist_len;
Odd variable name, why use it?
> +
> + if (cmd->convert_src == TRIG_TIMER)
> + expected = cmd->convert_arg * cmd->chanlist_len;
> err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
> - board->ai_speed *
> - cmd->chanlist_len);
> + expected);
> }
>
> switch (cmd->stop_src) {
> diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
> index 398347f..1edcf2f 100644
> --- a/drivers/staging/comedi/drivers/ni_mio_common.c
> +++ b/drivers/staging/comedi/drivers/ni_mio_common.c
> @@ -620,18 +620,18 @@ static int ni_request_ao_mite_channel(struct comedi_device *dev)
> }
>
> static int ni_request_gpct_mite_channel(struct comedi_device *dev,
> - unsigned int gpct_index,
> + unsigned int index,
> enum comedi_io_direction direction)
> {
> struct ni_private *devpriv = dev->private;
> - struct ni_gpct *counter = &devpriv->counter_dev->counters[gpct_index];
> + struct ni_gpct *counter = &devpriv->counter_dev->counters[index];
The original name was better, don't you think?
> struct mite_channel *mite_chan;
> unsigned long flags;
> unsigned int bits;
>
> spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
> mite_chan = mite_request_channel(devpriv->mite,
> - devpriv->gpct_mite_ring[gpct_index]);
> + devpriv->gpct_mite_ring[index]);
> if (!mite_chan) {
> spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
> dev_err(dev->class_dev,
> @@ -643,8 +643,8 @@ static int ni_request_gpct_mite_channel(struct comedi_device *dev,
>
> bits = NI_STC_DMA_CHAN_SEL(mite_chan->channel);
> ni_set_bitfield(dev, NI_E_DMA_G0_G1_SEL_REG,
> - NI_E_DMA_G0_G1_SEL_MASK(gpct_index),
> - NI_E_DMA_G0_G1_SEL(gpct_index, bits));
> + NI_E_DMA_G0_G1_SEL_MASK(index),
> + NI_E_DMA_G0_G1_SEL(index, bits));
>
> spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
> return 0;
> @@ -720,20 +720,19 @@ static void ni_release_ao_mite_channel(struct comedi_device *dev)
>
> #ifdef PCIDMA
> static void ni_release_gpct_mite_channel(struct comedi_device *dev,
> - unsigned int gpct_index)
> + unsigned int index)
Same here, please leave as-is.
> {
> struct ni_private *devpriv = dev->private;
> unsigned long flags;
>
> spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
> - if (devpriv->counter_dev->counters[gpct_index].mite_chan) {
> + if (devpriv->counter_dev->counters[index].mite_chan) {
> struct mite_channel *mite_chan =
> - devpriv->counter_dev->counters[gpct_index].mite_chan;
> + devpriv->counter_dev->counters[index].mite_chan;
>
> ni_set_bitfield(dev, NI_E_DMA_G0_G1_SEL_REG,
> - NI_E_DMA_G0_G1_SEL_MASK(gpct_index), 0);
> - ni_tio_set_mite_channel(&devpriv->
> - counter_dev->counters[gpct_index],
> + NI_E_DMA_G0_G1_SEL_MASK(index), 0);
> + ni_tio_set_mite_channel(&devpriv->counter_dev->counters[index],
> NULL);
> mite_release_channel(mite_chan);
> }
> @@ -756,20 +755,20 @@ static void ni_release_cdo_mite_channel(struct comedi_device *dev)
> }
>
> static void ni_e_series_enable_second_irq(struct comedi_device *dev,
> - unsigned int gpct_index, short enable)
> + unsigned int index, short enable)
> {
> struct ni_private *devpriv = dev->private;
> unsigned int val = 0;
> int reg;
>
> - if (devpriv->is_m_series || gpct_index > 1)
> + if (devpriv->is_m_series || index > 1)
> return;
>
> /*
> * e-series boards use the second irq signals to generate
> * dma requests for their counters
> */
> - if (gpct_index == 0) {
> + if (index == 0) {
> reg = NISTC_INTA2_ENA_REG;
> if (enable)
> val = NISTC_INTA_ENA_G0_GATE;
> @@ -1966,6 +1965,7 @@ static void ni_cmd_set_mite_transfer(struct mite_ring *ring,
> {
> #ifdef PCIDMA
> unsigned int nbytes = max_count;
> + char *err_msg = "data transfer limits greater than buffer size";
>
> if (cmd->stop_arg > 0 && cmd->stop_arg < max_count)
> nbytes = cmd->stop_arg;
> @@ -1974,7 +1974,7 @@ static void ni_cmd_set_mite_transfer(struct mite_ring *ring,
> if (nbytes > sdev->async->prealloc_bufsz) {
> if (cmd->stop_arg > 0)
> dev_err(sdev->device->class_dev,
> - "ni_cmd_set_mite_transfer: tried exact data transfer limits greater than buffer size\n");
> + "%s: %s\n", __func__, err_msg);
Ick, no. What's wrong with the original code here? No tool should have
told you it was wrong.
>
> /*
> * we can only transfer up to the size of the buffer. In this
> @@ -1986,8 +1986,9 @@ static void ni_cmd_set_mite_transfer(struct mite_ring *ring,
>
> mite_init_ring_descriptors(ring, sdev, nbytes);
> #else
> - dev_err(sdev->device->class_dev,
> - "ni_cmd_set_mite_transfer: exact data transfer limits not implemented yet without DMA\n");
> + char *err_msg = "data transfer limits not implemented yet without DMA";
Same here, don't od that.
Also you now have a build warning :(
> +
> + dev_err(sdev->device->class_dev, "%s: %s\n", __func__, err_msg);
> #endif
> }
>
> @@ -4299,7 +4300,7 @@ static int pack_ad8842(int addr, int val, int *bitstring)
> struct caldac_struct {
> int n_chans;
> int n_bits;
> - int (*packbits)(int, int, int *);
> + int (*packbits)(int addr, int val, int *bitstring);
You are doing something different here than the other changes. Please
only make one logical-type of a change per patch.
thanks,
greg k-h
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