This patch fixes the incomplete data return problem of /proc/ide/pdc202xx.
When the number of consecutive read bytes are smaller than the total
data in pdc202xx_get_info(), the second read() returns 0.
--- linux-2.5.62-vanilla/drivers/ide/pci/pdc202xx_old.c Sat Feb 22 23:00:52 2003
+++ linux-2.5.62/drivers/ide/pci/pdc202xx_old.c Sat Feb 22 23:35:29 2003
@@ -177,13 +177,17 @@
static int pdc202xx_get_info (char *buffer, char **addr, off_t offset, int count)
{
char *p = buffer;
- int i;
+ int i, len;
for (i = 0; i < n_pdc202_devs; i++) {
struct pci_dev *dev = pdc202_devs[i];
p = pdc202xx_info(buffer, dev);
}
- 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_PDC202XX_TIMINGS) && defined(CONFIG_PROC_FS) */
-
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This archive was generated by hypermail 2b29 : Sun Feb 23 2003 - 22:00:37 EST