staging: comedi: plx9080.h: tidy up some comments

Use the usual block comment style and remove some excess spaces from
single-line comments.  Remove some obvious stuff about register offsets
being zero relative.  Remove some text about the original history of the
file, as it bears hardly any resemblance to it now.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/plx9080.h

@@ -3,15 +3,6 @@
  *
  * Copyright (C) 2002,2003 Frank Mori Hess <fmhess@users.sourceforge.net>
  *
- * I modified this file from the plx9060.h header for the
- * wanXL device driver in the linux kernel,
- * for the register offsets and bit definitions.  Made minor modifications,
- * added plx9080 registers and
- * stripped out stuff that was specifically for the wanXL driver.
- * Note: I've only made sure the definitions are correct as far
- * as I make use of them.  There are still various plx9060-isms
- * left in this header file.
- *
  ********************************************************************
  *
  * Copyright (C) 1999 RG Studio s.c.
@@ -28,7 +19,7 @@
 #ifndef __COMEDI_PLX9080_H
 #define __COMEDI_PLX9080_H
 
-/*  descriptor block used for chained dma transfers */
+/* descriptor block used for chained dma transfers */
 struct plx_dma_desc {
 	__le32 pci_start_addr;
 	__le32 local_start_addr;
@@ -41,13 +32,9 @@ struct plx_dma_desc {
 	__le32 next;
 };
 
-/**********************************************************************
-**            Register Offsets and Bit Definitions
-**
-** Note: All offsets zero relative.  IE. Some standard base address
-** must be added to the Register Number to properly access the register.
-**
-**********************************************************************/
+/*
+ * Register Offsets and Bit Definitions
+ */
 
 /* Local Address Space 0 Range Register */
 #define PLX_REG_LAS0RR		0x0000
@@ -145,10 +132,11 @@ struct plx_dma_desc {
 #define PLX_BIGEND_DMA(n)	((n) ? PLX_BIGEND_DMA1 : PLX_BIGEND_DMA0)
 
 /*
-** Note: The Expansion ROM  stuff is only relevant to the PC environment.
-**       This expansion ROM code is executed by the host CPU at boot time.
-**       For this reason no bit definitions are provided here.
+ * Note: The Expansion ROM  stuff is only relevant to the PC environment.
+ *       This expansion ROM code is executed by the host CPU at boot time.
+ *       For this reason no bit definitions are provided here.
  */
+
 /* Expansion ROM Range Register */
 #define PLX_REG_EROMRR		0x0010
 /* Expansion ROM Local Base Address (Remap) Register */
@@ -615,12 +603,12 @@ static inline int plx9080_abort_dma(void __iomem *iobase, unsigned int channel)
 
 	dma_cs_addr = iobase + PLX_REG_DMACSR(channel);
 
-	/*  abort dma transfer if necessary */
+	/* abort dma transfer if necessary */
 	dma_status = readb(dma_cs_addr);
 	if ((dma_status & PLX_DMACSR_ENABLE) == 0)
 		return 0;
 
-	/*  wait to make sure done bit is zero */
+	/* wait to make sure done bit is zero */
 	for (i = 0; (dma_status & PLX_DMACSR_DONE) && i < timeout; i++) {
 		udelay(1);
 		dma_status = readb(dma_cs_addr);
@@ -628,9 +616,9 @@ static inline int plx9080_abort_dma(void __iomem *iobase, unsigned int channel)
 	if (i == timeout)
 		return -ETIMEDOUT;
 
-	/*  disable and abort channel */
+	/* disable and abort channel */
 	writeb(PLX_DMACSR_ABORT, dma_cs_addr);
-	/*  wait for dma done bit */
+	/* wait for dma done bit */
 	dma_status = readb(dma_cs_addr);
 	for (i = 0; (dma_status & PLX_DMACSR_DONE) == 0 && i < timeout; i++) {
 		udelay(1);