Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 22 Feb 2003 18:06:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 22 Feb 2003 18:06:09 -0500 Received: from [212.156.4.132] ([212.156.4.132]:37628 "EHLO fep02.ttnet.net.tr") by vger.kernel.org with ESMTP id ; Sat, 22 Feb 2003 18:06:07 -0500 Date: Sun, 23 Feb 2003 01:16:22 +0200 From: Faik Uygur To: andre@linux-ide.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH] 2.5.62: /proc/ide/pdcadma returns incomplete data [10/17] Message-ID: <20030222231622.GI2996@ttnet.net.tr> Mail-Followup-To: andre@linux-ide.org, linux-kernel@vger.kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-9 Content-Disposition: inline User-Agent: Mutt/1.4i X-PGP-Fingerprint: 15 C0 AA 31 59 F9 DE 4F 7D A6 C7 D8 A0 D5 67 73 X-PGP-Key-ID: 0x5C447959 X-PGP-Key-Size: 2048 bits X-Editor: GNU Emacs 21.2.1 X-Operating-System: Debian GNU/Linux Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1133 Lines: 33 This patch fixes the incomplete data return problem of /proc/ide/pdcadma. When the number of consecutive read bytes are smaller than the total data in pdcadma_get_info(), the second read() returns 0. --- linux-2.5.62-vanilla/drivers/ide/pci/pdcadma.c Sun Feb 23 00:08:33 2003 +++ linux-2.5.62/drivers/ide/pci/pdcadma.c Sat Feb 22 23:36:32 2003 @@ -39,7 +39,7 @@ static int pdcadma_get_info (char *buffer, char **addr, off_t offset, int count) { char *p = buffer; - int i; + int i, len; for (i = 0; i < n_pdc_devs; i++) { struct pci_dev *dev = pdc_devs[i]; @@ -51,7 +51,11 @@ p += sprintf(p, "PIO\n"); } - 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_PDCADMA_TIMINGS) && defined(CONFIG_PROC_FS) */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/