This patch fixes the incomplete data return problem of /proc/ide/siimage.
When the number of consecutive read bytes are smaller than the total
data in siimage_get_info(), the second read() returns 0.
--- linux-2.5.62-vanilla/drivers/ide/pci/siimage.c Tue Dec 24 07:20:02 2002
+++ linux-2.5.62/drivers/ide/pci/siimage.c Sat Feb 22 23:42:15 2003
@@ -55,6 +55,7 @@
static int siimage_get_info (char *buffer, char **addr, off_t offset, int count)
{
char *p = buffer;
+ int len;
u16 i;
p += sprintf(p, "\n");
@@ -62,7 +63,11 @@
struct pci_dev *dev = siimage_devs[i];
p = print_siimage_get_info(p, dev, i);
}
- 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_SIIMAGE_TIMINGS) && defined(CONFIG_PROC_FS) */