[PATCH] 2.5.62: /proc/ide/slc90e66 returns incomplete data [16/17]

[Faik Uygur]

This patch fixes the incomplete data return problem of /proc/ide/slc90e66.
When the number of consecutive read bytes are smaller than the total
data in slc90e66_get_info(), the second read() returns 0.

--- linux-2.5.62-vanilla/drivers/ide/pci/slc90e66.c	Sun Feb 23 01:42:21 2003
+++ linux-2.5.62/drivers/ide/pci/slc90e66.c	Sun Feb 23 01:42:49 2003
@@ -34,8 +34,9 @@
 static int slc90e66_get_info (char *buffer, char **addr, off_t offset, int count)
 {
 	char *p = buffer;
+	int len;
 	unsigned long bibma = pci_resource_start(bmide_dev, 4);
-        u16 reg40 = 0, psitre = 0, reg42 = 0, ssitre = 0;
+	u16 reg40 = 0, psitre = 0, reg42 = 0, ssitre = 0;
 	u8  c0 = 0, c1 = 0;
 	u8  reg44 = 0, reg47 = 0, reg48 = 0, reg4a = 0, reg4b = 0;
 
@@ -110,7 +111,11 @@
  *	FIXME.... Add configuration junk data....blah blah......
  */
 
-	return p-buffer;	 /* => must be less than 4k! */
+	/* p - buffer must be less than 4k! */
+	len = (p - buffer) - offset;
+	*addr = buffer + offset;
+	
+	return len > count ? count : len;
 }
 #endif  /* defined(DISPLAY_SLC90E66_TIMINGS) && defined(CONFIG_PROC_FS) */