[PATCH v2] Staging: comedi: fix warning issue in pcl818.c
From: Ravishankar
Date: Wed Aug 03 2011 - 09:49:45 EST
From: Ravishankar <ravi.shankar@xxxxxxxxxxxxxxx>
This is a patch to the pcl818.c file that fixes up a printk(),brace coding style and initilise statics to NULL warning found by the checkpatch.pl tool
Signed-off-by: Ravishankar <ravishankarkm32@xxxxxxxxx>
---
drivers/staging/comedi/drivers/pcl818.c | 120 +++++++++++++++++----------------
1 files changed, 58 insertions(+), 62 deletions(-)
diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index b45a9bd..18d318c 100644
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -252,8 +252,8 @@ static int pcl818_attach(struct comedi_device *dev,
static int pcl818_detach(struct comedi_device *dev);
#ifdef unused
-static int RTC_lock = 0; /* RTC lock */
-static int RTC_timer_lock = 0; /* RTC int lock */
+static int RTC_lock; /* RTC lock */
+static int RTC_timer_lock; /* RTC int lock */
#endif
struct pcl818_board {
@@ -463,10 +463,8 @@ static int pcl818_ao_insn_read(struct comedi_device *dev,
int n;
int chan = CR_CHAN(insn->chanspec);
- for (n = 0; n < insn->n; n++) {
+ for (n = 0; n < insn->n; n++)
data[n] = devpriv->ao_readback[chan];
- }
-
return n;
}
@@ -571,9 +569,9 @@ conv_finish:
return IRQ_HANDLED;
}
devpriv->act_chanlist_pos++;
- if (devpriv->act_chanlist_pos >= devpriv->act_chanlist_len) {
+ if (devpriv->act_chanlist_pos >= devpriv->act_chanlist_len)
devpriv->act_chanlist_pos = 0;
- }
+
s->async->cur_chan++;
if (s->async->cur_chan >= devpriv->ai_n_chan) {
/* printk("E"); */
@@ -645,9 +643,9 @@ static irqreturn_t interrupt_pcl818_ai_mode13_dma(int irq, void *d)
comedi_buf_put(s->async, ptr[bufptr++] >> 4); /* get one sample */
devpriv->act_chanlist_pos++;
- if (devpriv->act_chanlist_pos >= devpriv->act_chanlist_len) {
+ if (devpriv->act_chanlist_pos >= devpriv->act_chanlist_len)
devpriv->act_chanlist_pos = 0;
- }
+
s->async->cur_chan++;
if (s->async->cur_chan >= devpriv->ai_n_chan) {
s->async->cur_chan = 0;
@@ -805,11 +803,10 @@ static irqreturn_t interrupt_pcl818_ai_mode13_fifo(int irq, void *d)
return IRQ_HANDLED;
}
- if (lo & 2) {
+ if (lo & 2)
len = 512;
- } else {
+ else
len = 0;
- }
for (i = 0; i < len; i++) {
lo = inb(dev->iobase + PCL818_FI_DATALO);
@@ -827,9 +824,9 @@ static irqreturn_t interrupt_pcl818_ai_mode13_fifo(int irq, void *d)
comedi_buf_put(s->async, (lo >> 4) | (inb(dev->iobase + PCL818_FI_DATAHI) << 4)); /* get one sample */
devpriv->act_chanlist_pos++;
- if (devpriv->act_chanlist_pos >= devpriv->act_chanlist_len) {
+ if (devpriv->act_chanlist_pos >= devpriv->act_chanlist_len)
devpriv->act_chanlist_pos = 0;
- }
+
s->async->cur_chan++;
if (s->async->cur_chan >= devpriv->ai_n_chan) {
s->async->cur_chan = 0;
@@ -1009,7 +1006,7 @@ static int pcl818_ai_cmd_mode(int mode, struct comedi_device *dev,
int divisor1 = 0, divisor2 = 0;
unsigned int seglen;
- printk("pcl818_ai_cmd_mode()\n");
+ dev_dbg(dev->hw_dev, "pcl818_ai_cmd_mode()\n");
if ((!dev->irq) && (!devpriv->dma_rtc)) {
comedi_error(dev, "IRQ not defined!");
return -EINVAL;
@@ -1112,7 +1109,7 @@ static int pcl818_ai_cmd_mode(int mode, struct comedi_device *dev,
break;
}
#endif
- printk("pcl818_ai_cmd_mode() end\n");
+ dev_dbg(dev->hw_dev, "pcl818_ai_cmd_mode() end\n");
return 0;
}
@@ -1309,11 +1306,9 @@ static void setup_channel_list(struct comedi_device *dev,
*/
static int check_single_ended(unsigned int port)
{
- if (inb(port + PCL818_STATUS) & 0x20) {
+ if (inb(port + PCL818_STATUS) & 0x20)
return 1;
- } else {
- return 0;
- }
+ return 0;
}
/*
@@ -1352,9 +1347,8 @@ static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
if (!cmd->stop_src || tmp != cmd->stop_src)
err++;
- if (err) {
+ if (err)
return 1;
- }
/* step 2: make sure trigger sources are unique and mutually compatible */
@@ -1377,9 +1371,8 @@ static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
if (cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_COUNT)
err++;
- if (err) {
+ if (err)
return 2;
- }
/* step 3: make sure arguments are trivially compatible */
@@ -1421,9 +1414,8 @@ static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
}
}
- if (err) {
+ if (err)
return 3;
- }
/* step 4: fix up any arguments */
@@ -1438,9 +1430,8 @@ static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
err++;
}
- if (err) {
+ if (err)
return 4;
- }
/* step 5: complain about special chanlist considerations */
@@ -1461,7 +1452,7 @@ static int ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
struct comedi_cmd *cmd = &s->async->cmd;
int retval;
- printk("pcl818_ai_cmd()\n");
+ dev_dbg(dev->hw_dev, "pcl818_ai_cmd()\n");
devpriv->ai_n_chan = cmd->chanlist_len;
devpriv->ai_chanlist = cmd->chanlist;
devpriv->ai_flags = cmd->flags;
@@ -1470,17 +1461,16 @@ static int ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
devpriv->ai_timer1 = 0;
devpriv->ai_timer2 = 0;
- if (cmd->stop_src == TRIG_COUNT) {
+ if (cmd->stop_src == TRIG_COUNT)
devpriv->ai_scans = cmd->stop_arg;
- } else {
+ else
devpriv->ai_scans = 0;
- }
if (cmd->scan_begin_src == TRIG_FOLLOW) { /* mode 1, 3 */
if (cmd->convert_src == TRIG_TIMER) { /* mode 1 */
devpriv->ai_timer1 = cmd->convert_arg;
retval = pcl818_ai_cmd_mode(1, dev, s);
- printk("pcl818_ai_cmd() end\n");
+ dev_dbg(dev->hw_dev, "pcl818_ai_cmd() end\n");
return retval;
}
if (cmd->convert_src == TRIG_EXT) { /* mode 3 */
@@ -1499,7 +1489,7 @@ static int pcl818_ai_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
{
if (devpriv->irq_blocked > 0) {
- printk("pcl818_ai_cancel()\n");
+ dev_dbg(dev->hw_dev, "pcl818_ai_cancel()\n");
devpriv->irq_was_now_closed = 1;
switch (devpriv->ai_mode) {
@@ -1549,7 +1539,7 @@ static int pcl818_ai_cancel(struct comedi_device *dev,
}
end:
- printk("pcl818_ai_cancel() end\n");
+ dev_dbg(dev->hw_dev, "pcl818_ai_cancel() end\n");
return 0;
}
@@ -1633,11 +1623,11 @@ static int set_rtc_irq_bit(unsigned char bit)
save_flags(flags);
cli();
val = CMOS_READ(RTC_CONTROL);
- if (bit) {
+ if (bit)
val |= RTC_PIE;
- } else {
+ else
val &= ~RTC_PIE;
- }
+
CMOS_WRITE(val, RTC_CONTROL);
CMOS_READ(RTC_INTR_FLAGS);
restore_flags(flags);
@@ -1754,7 +1744,7 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
/* claim our I/O space */
iobase = it->options[0];
- printk("comedi%d: pcl818: board=%s, ioport=0x%03lx",
+ printk(KERN_INFO "comedi%d: pcl818: board=%s, ioport=0x%03lx",
dev->minor, this_board->name, iobase);
devpriv->io_range = this_board->io_range;
if ((this_board->fifo) && (it->options[2] == -1)) { /* we've board with FIFO and we want to use FIFO */
@@ -1762,17 +1752,19 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
devpriv->usefifo = 1;
}
if (!request_region(iobase, devpriv->io_range, "pcl818")) {
- printk("I/O port conflict\n");
+ printk(KERN_ERR "I/O port conflict\n");
return -EIO;
}
+ printk(KERN_CONT ", I/O port detected\n");
dev->iobase = iobase;
if (pcl818_check(iobase)) {
- printk(", I can't detect board. FAIL!\n");
+ printk(KERN_WARNING "I can't detect board. FAIL!\n");
return -EIO;
}
+ printk(KERN_CONT ", Board is detected successfully\n");
/* set up some name stuff */
dev->board_name = this_board->name;
/* grab our IRQ */
@@ -1782,30 +1774,29 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
if (irq) { /* we want to use IRQ */
if (((1 << irq) & this_board->IRQbits) == 0) {
printk
- (", IRQ %u is out of allowed range, DISABLING IT",
+ printk(KERN_CONT ", IRQ %u is out of allowed range,"
+ "DISABLING IT", irq);
irq = 0; /* Bad IRQ */
} else {
if (request_irq
(irq, interrupt_pcl818, 0, "pcl818", dev)) {
printk
- (", unable to allocate IRQ %u, DISABLING IT",
+ printk(KERN_CONT ", unable to allocate IRQ %u,"
+ "DISABLING IT", irq);
irq = 0; /* Can't use IRQ */
} else {
- printk(", irq=%u", irq);
+ printk(KERN_CONT ", irq=%u", irq);
}
}
}
}
dev->irq = irq;
- if (irq) {
- devpriv->irq_free = 1;
- } /* 1=we have allocated irq */
- else {
+ if (irq)
+ devpriv->irq_free = 1; /* 1=we have allocated irq */
+ else
devpriv->irq_free = 0;
- }
+
devpriv->irq_blocked = 0; /* number of subdevice which use IRQ */
devpriv->ai_mode = 0; /* mode of irq */
@@ -1825,7 +1816,7 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
"pcl818 DMA (RTC)", dev)) {
devpriv->dma_rtc = 1;
devpriv->rtc_irq = RTC_IRQ;
- printk(", dma_irq=%u", devpriv->rtc_irq);
+ printk(KERN_CONT ", dma_irq=%u", devpriv->rtc_irq);
} else {
RTC_lock--;
if (RTC_lock == 0) {
@@ -1850,23 +1841,26 @@ no_rtc:
if (dma < 1)
goto no_dma; /* DMA disabled */
if (((1 << dma) & this_board->DMAbits) == 0) {
- printk(", DMA is out of allowed range, FAIL!\n");
+ printk(KERN_WARNING "DMA is out of allowed range, FAIL!\n");
return -EINVAL; /* Bad DMA */
}
+ printk(KERN_CONT ", DMA is in allowed range\n");
ret = request_dma(dma, "pcl818");
if (ret) {
- printk(", unable to allocate DMA %u, FAIL!\n", dma);
+ printk(KERN_WARNING "unable to allocate DMA %u,"
+ "FAIL!\n", dma);
return -EBUSY; /* DMA isn't free */
}
+ printk(KERN_CONT ", DMA allocated successfully\n");
devpriv->dma = dma;
- printk(", dma=%u", dma);
+ printk(KERN_CONT ", dma=%u", dma);
pages = 2; /* we need 16KB */
devpriv->dmabuf[0] = __get_dma_pages(GFP_KERNEL, pages);
if (!devpriv->dmabuf[0]) {
- printk(", unable to allocate DMA buffer, FAIL!\n");
+ printk(KERN_WARNING "unable to allocate DMA buffer, FAIL!\n");
/* maybe experiment with try_to_free_pages() will help .... */
return -EBUSY; /* no buffer :-( */
}
+ printk(KERN_CONT ", DMA buffer allocated successfully\n");
devpriv->dmapages[0] = pages;
devpriv->hwdmaptr[0] = virt_to_bus((void *)devpriv->dmabuf[0]);
devpriv->hwdmasize[0] = (1 << pages) * PAGE_SIZE;
@@ -1874,10 +1868,11 @@ no_rtc:
if (devpriv->dma_rtc == 0) { /* we must do duble buff :-( */
devpriv->dmabuf[1] = __get_dma_pages(GFP_KERNEL, pages);
if (!devpriv->dmabuf[1]) {
- printk
- (", unable to allocate DMA buffer, FAIL!\n");
+ printk(KERN_WARNING "unable to allocate DMA buffer, FAIL!\n");
return -EBUSY;
}
+ printk(KERN_CONT ", DMA buffer allocated successfully\n");
devpriv->dmapages[1] = pages;
devpriv->hwdmaptr[1] =
virt_to_bus((void *)devpriv->dmabuf[1]);
@@ -1901,11 +1896,11 @@ no_dma:
if (check_single_ended(dev->iobase)) {
s->n_chan = this_board->n_aichan_se;
s->subdev_flags |= SDF_COMMON | SDF_GROUND;
- printk(", %dchans S.E. DAC", s->n_chan);
+ printk(KERN_CONT ", %dchans S.E. DAC", s->n_chan);
} else {
s->n_chan = this_board->n_aichan_diff;
s->subdev_flags |= SDF_DIFF;
- printk(", %dchans DIFF DAC", s->n_chan);
+ printk(KERN_CONT ", %dchans DIFF DAC", s->n_chan);
}
s->maxdata = this_board->ai_maxdata;
s->len_chanlist = s->n_chan;
@@ -2017,11 +2012,10 @@ no_dma:
}
/* select 1/10MHz oscilator */
- if ((it->options[3] == 0) || (it->options[3] == 10)) {
+ if ((it->options[3] == 0) || (it->options[3] == 10))
devpriv->i8253_osc_base = 100;
- } else {
+ else
devpriv->i8253_osc_base = 1000;
- }
/* max sampling speed */
devpriv->ns_min = this_board->ns_min;
@@ -2033,7 +2027,7 @@ no_dma:
pcl818_reset(dev);
- printk("\n");
+ printk(KERN_CONT "\n");
return 0;
}
--
1.6.5.2
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