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parport_pc: clean up the modified while loops using for 

And tidy up a few bits coding style detectors missed

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2009-06-11 13:08:10 +01:00 committed by Linus Torvalds
parent 3aeda9bc95
commit 181bf1e815
1 changed files with 57 additions and 41 deletions
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98
drivers/parport/parport_pc.c
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@ -626,7 +626,7 @@ static size_t parport_pc_fifo_write_block_dma(struct parport *port,
unsigned long start = (unsigned long) buf; unsigned long start = (unsigned long) buf;
unsigned long end = (unsigned long) buf + length - 1; unsigned long end = (unsigned long) buf + length - 1;
dump_parport_state("enter fifo_write_block_dma", port); dump_parport_state("enter fifo_write_block_dma", port);
if (end < MAX_DMA_ADDRESS) { if (end < MAX_DMA_ADDRESS) {
/* If it would cross a 64k boundary, cap it at the end. */ /* If it would cross a 64k boundary, cap it at the end. */
if ((start ^ end) & ~0xffffUL) if ((start ^ end) & ~0xffffUL)
@ -737,7 +737,7 @@ false_alarm:
if (dma_handle) if (dma_handle)
dma_unmap_single(dev, dma_handle, length, DMA_TO_DEVICE); dma_unmap_single(dev, dma_handle, length, DMA_TO_DEVICE);
dump_parport_state("leave fifo_write_block_dma", port); dump_parport_state("leave fifo_write_block_dma", port);
return length - left; return length - left;
} }
#endif #endif
@ -955,8 +955,8 @@ static size_t parport_pc_ecp_read_block_pio(struct parport *port,
char *bufp = buf; char *bufp = buf;
port = port->physport; port = port->physport;
DPRINTK(KERN_DEBUG "parport_pc: parport_pc_ecp_read_block_pio\n"); DPRINTK(KERN_DEBUG "parport_pc: parport_pc_ecp_read_block_pio\n");
dump_parport_state("enter fcn", port); dump_parport_state("enter fcn", port);
/* Special case: a timeout of zero means we cannot call schedule(). /* Special case: a timeout of zero means we cannot call schedule().
* Also if O_NONBLOCK is set then use the default implementation. */ * Also if O_NONBLOCK is set then use the default implementation. */
@ -1112,14 +1112,15 @@ false_alarm:
if (ecrval & 0x02) { if (ecrval & 0x02) {
/* FIFO is full. */ /* FIFO is full. */
dump_parport_state("FIFO full", port); dump_parport_state("FIFO full", port);
insb(fifo, bufp, fifo_depth); insb(fifo, bufp, fifo_depth);
bufp += fifo_depth; bufp += fifo_depth;
left -= fifo_depth; left -= fifo_depth;
continue; continue;
} }
DPRINTK(KERN_DEBUG "*** ecp_read_block_pio: reading one byte from the FIFO\n"); DPRINTK(KERN_DEBUG
"*** ecp_read_block_pio: reading one byte from the FIFO\n");
/* FIFO not filled. We will cycle this loop for a while /* FIFO not filled. We will cycle this loop for a while
* and either the peripheral will fill it faster, * and either the peripheral will fill it faster,
@ -1135,7 +1136,7 @@ DPRINTK(KERN_DEBUG "*** ecp_read_block_pio: reading one byte from the FIFO\n");
} }
port->ieee1284.phase = IEEE1284_PH_REV_IDLE; port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
dump_parport_state("rev idle2", port); dump_parport_state("rev idle2", port);
out_no_data: out_no_data:
@ -1163,7 +1164,7 @@ out_no_data:
port->name, lost); port->name, lost);
} }
dump_parport_state("fwd idle", port); dump_parport_state("fwd idle", port);
return length - left; return length - left;
} }
#endif /* 0 */ #endif /* 0 */
@ -1216,10 +1217,23 @@ static const struct parport_operations parport_pc_ops = {
}; };
#ifdef CONFIG_PARPORT_PC_SUPERIO #ifdef CONFIG_PARPORT_PC_SUPERIO
static struct superio_struct *find_free_superio(void)
{
int i;
for (i = 0; i < NR_SUPERIOS; i++)
if (superios[i].io == 0)
return &superios[i];
return NULL;
}
/* Super-IO chipset detection, Winbond, SMSC */ /* Super-IO chipset detection, Winbond, SMSC */
static void __devinit show_parconfig_smsc37c669(int io, int key) static void __devinit show_parconfig_smsc37c669(int io, int key)
{ {
int cr1, cr4, cra, cr23, cr26, cr27, i = 0; int cr1, cr4, cra, cr23, cr26, cr27;
struct superio_struct *s;
static const char *const modes[] = { static const char *const modes[] = {
"SPP and Bidirectional (PS/2)", "SPP and Bidirectional (PS/2)",
"EPP and SPP", "EPP and SPP",
@ -1272,30 +1286,29 @@ static void __devinit show_parconfig_smsc37c669(int io, int key)
are related, however DMA can be 1 or 3, assume DMA_A=DMA1, are related, however DMA can be 1 or 3, assume DMA_A=DMA1,
DMA_C=DMA3 (this is true e.g. for TYAN 1564D Tomcat IV) */ DMA_C=DMA3 (this is true e.g. for TYAN 1564D Tomcat IV) */
if (cr23 * 4 >= 0x100) { /* if active */ if (cr23 * 4 >= 0x100) { /* if active */
while ((i < NR_SUPERIOS) && (superios[i].io != 0)) s = find_free_superio();
i++; if (s == NULL)
if (i == NR_SUPERIOS) {
printk(KERN_INFO "Super-IO: too many chips!\n"); printk(KERN_INFO "Super-IO: too many chips!\n");
} else { else {
int d; int d;
switch (cr23 * 4) { switch (cr23 * 4) {
case 0x3bc: case 0x3bc:
superios[i].io = 0x3bc; s->io = 0x3bc;
superios[i].irq = 7; s->irq = 7;
break; break;
case 0x378: case 0x378:
superios[i].io = 0x378; s->io = 0x378;
superios[i].irq = 7; s->irq = 7;
break; break;
case 0x278: case 0x278:
superios[i].io = 0x278; s->io = 0x278;
superios[i].irq = 5; s->irq = 5;
} }
d = (cr26 & 0x0f); d = (cr26 & 0x0f);
if (d == 1 || d == 3) if (d == 1 || d == 3)
superios[i].dma = d; s->dma = d;
else else
superios[i].dma = PARPORT_DMA_NONE; s->dma = PARPORT_DMA_NONE;
} }
} }
} }
@ -1303,7 +1316,8 @@ static void __devinit show_parconfig_smsc37c669(int io, int key)
static void __devinit show_parconfig_winbond(int io, int key) static void __devinit show_parconfig_winbond(int io, int key)
{ {
int cr30, cr60, cr61, cr70, cr74, crf0, i = 0; int cr30, cr60, cr61, cr70, cr74, crf0;
struct superio_struct *s;
static const char *const modes[] = { static const char *const modes[] = {
"Standard (SPP) and Bidirectional(PS/2)", /* 0 */ "Standard (SPP) and Bidirectional(PS/2)", /* 0 */
"EPP-1.9 and SPP", "EPP-1.9 and SPP",
@ -1356,14 +1370,13 @@ static void __devinit show_parconfig_winbond(int io, int key)
} }
if (cr30 & 0x01) { /* the settings can be interrogated later ... */ if (cr30 & 0x01) { /* the settings can be interrogated later ... */
while ((i < NR_SUPERIOS) && (superios[i].io != 0)) s = find_free_superio();
i++; if (s == NULL)
if (i == NR_SUPERIOS) {
printk(KERN_INFO "Super-IO: too many chips!\n"); printk(KERN_INFO "Super-IO: too many chips!\n");
} else { else {
superios[i].io = (cr60<<8)|cr61; s->io = (cr60 << 8) | cr61;
superios[i].irq = cr70&0x0f; s->irq = cr70 & 0x0f;
superios[i].dma = (((cr74 & 0x07) > 3) ? s->dma = (((cr74 & 0x07) > 3) ?
PARPORT_DMA_NONE : (cr74 & 0x07)); PARPORT_DMA_NONE : (cr74 & 0x07));
} }
} }
@ -1618,25 +1631,28 @@ static void __devinit detect_and_report_it87(void)
} }
#endif /* CONFIG_PARPORT_PC_SUPERIO */ #endif /* CONFIG_PARPORT_PC_SUPERIO */
static struct superio_struct *find_superio(struct parport *p)
{
int i;
for (i = 0; i < NR_SUPERIOS; i++)
if (superios[i].io != p->base)
return &superios[i];
return NULL;
}
static int get_superio_dma(struct parport *p) static int get_superio_dma(struct parport *p)
{ {
int i = 0; struct superio_struct *s = find_superio(p);
if (s)
while ((i < NR_SUPERIOS) && (superios[i].io != p->base)) return s->dma;
i++;
if (i != NR_SUPERIOS)
return superios[i].dma;
return PARPORT_DMA_NONE; return PARPORT_DMA_NONE;
} }
static int get_superio_irq(struct parport *p) static int get_superio_irq(struct parport *p)
{ {
int i = 0; struct superio_struct *s = find_superio(p);
if (s)
while ((i < NR_SUPERIOS) && (superios[i].io != p->base)) return s->irq;
i++;
if (i != NR_SUPERIOS)
return superios[i].irq;
return PARPORT_IRQ_NONE; return PARPORT_IRQ_NONE;
} }