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