Messages in this thread Patch in this message | | | Date | Sun, 23 Feb 2003 01:11:19 +0200 | From | Faik Uygur <> | Subject | [PATCH] 2.5.62: /proc/ide/pdc202xx returns incomplete data [9/17] |
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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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