Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  ide-gd: re-get capacity on revalidate
  tx4938ide: Avoid underflow on calculation of a wait cycle
  tx4938ide: Do not call devm_ioremap for whole 128KB
  tx4938ide: Check minimum cycle time and SHWT range (v2)
  ide: Switch to a common address
  ide-cd: fix DMA alignment regression

14 files changed, 46 insertions, 27 deletions

diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c
index daf9dce39e52..e56c7b72f9e2 100644
--- a/drivers/ide/alim15x3.c
+++ b/drivers/ide/alim15x3.c
@@ -5,7 +5,7 @@
  *
  *  Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org)
  *  May be copied or modified under the terms of the GNU General Public License
- *  Copyright (C) 2002 Alan Cox <alan@redhat.com>
+ *  Copyright (C) 2002 Alan Cox
  *  ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
  *  Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
  *  Copyright (C) 2007 Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c
index a7909e9c720e..f5afd46ed51c 100644
--- a/drivers/ide/hpt366.c
+++ b/drivers/ide/hpt366.c
@@ -52,7 +52,7 @@
  * different clocks on read/write. This requires overloading rw_disk and
  * other deeply crazy things. Thanks to <http://www.hoerstreich.de> for
  * keeping me sane. 
- *              Alan Cox <alan@redhat.com>
+ *              Alan Cox <alan@lxorguk.ukuu.org.uk>
  *
  * - fix the clock turnaround code: it was writing to the wrong ports when
  *   called for the secondary channel, caching the current clock mode per-
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 48b5eda3ab41..42ab6d8715f2 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1250,7 +1250,8 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
                  * separate masks.
                  */
                 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
-                if ((unsigned long)buf & alignment || rq->data_len & alignment
+                if ((unsigned long)buf & alignment
+                    || rq->data_len & q->dma_pad_mask
                     || object_is_on_stack(buf))
                         drive->dma = 0;
         }
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index e5adebe8ac2c..eb9fac4d0f0c 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -2,7 +2,7 @@
  *  Copyright (C) 1994-1998        Linus Torvalds & authors (see below)
  *  Copyright (C) 1998-2002        Linux ATA Development
  *                                    Andre Hedrick <andre@linux-ide.org>
- *  Copyright (C) 2003             Red Hat <alan@redhat.com>
+ *  Copyright (C) 2003             Red Hat
  *  Copyright (C) 2003-2005, 2007  Bartlomiej Zolnierkiewicz
  */
 
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index 7b6662854374..b8078b3231f7 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -281,7 +281,12 @@ static int ide_gd_media_changed(struct gendisk *disk)
 static int ide_gd_revalidate_disk(struct gendisk *disk)
 {
         struct ide_disk_obj *idkp = ide_drv_g(disk, ide_disk_obj);
-        set_capacity(disk, ide_gd_capacity(idkp->drive));
+        ide_drive_t *drive = idkp->drive;
+
+        if (ide_gd_media_changed(disk))
+                drive->disk_ops->get_capacity(drive);
+
+        set_capacity(disk, ide_gd_capacity(drive));
         return 0;
 }
 
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index bb7a1ed8094e..5d6ba14e211d 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -1,6 +1,6 @@
 /*
  *  Copyright (C) 2000-2002     Andre Hedrick <andre@linux-ide.org>
- *  Copyright (C) 2003          Red Hat <alan@redhat.com>
+ *  Copyright (C) 2003          Red Hat
  *
  */
 
diff --git a/drivers/ide/ide-pci-generic.c b/drivers/ide/ide-pci-generic.c
index 474f96a7c076..bddae2b329a0 100644
--- a/drivers/ide/ide-pci-generic.c
+++ b/drivers/ide/ide-pci-generic.c
@@ -1,6 +1,6 @@
 /*
  *  Copyright (C) 2001-2002     Andre Hedrick <andre@linux-ide.org>
- *  Portions (C) Copyright 2002  Red Hat Inc <alan@redhat.com>
+ *  Portions (C) Copyright 2002  Red Hat Inc
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index c31d0dd7a532..f3cddd1b2f8f 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -1,6 +1,6 @@
 /*
  *  Copyright (C) 1997-1998     Mark Lord
- *  Copyright (C) 2003          Red Hat <alan@redhat.com>
+ *  Copyright (C) 2003          Red Hat
  *
  *  Some code was moved here from ide.c, see it for original copyrights.
  */
diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c
index 995e18bb3139..ef004089761b 100644
--- a/drivers/ide/it821x.c
+++ b/drivers/ide/it821x.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004           Red Hat <alan@redhat.com>
+ * Copyright (C) 2004           Red Hat
  * Copyright (C) 2007           Bartlomiej Zolnierkiewicz
  *
  *  May be copied or modified under the terms of the GNU General Public License
diff --git a/drivers/ide/jmicron.c b/drivers/ide/jmicron.c
index 9a68433cf46d..bf2be6431b20 100644
--- a/drivers/ide/jmicron.c
+++ b/drivers/ide/jmicron.c
@@ -1,6 +1,6 @@
 
 /*
- * Copyright (C) 2006           Red Hat <alan@redhat.com>
+ * Copyright (C) 2006           Red Hat
  *
  *  May be copied or modified under the terms of the GNU General Public License
  */
diff --git a/drivers/ide/piix.c b/drivers/ide/piix.c
index d63f9fdca76b..61d2d920a5cd 100644
--- a/drivers/ide/piix.c
+++ b/drivers/ide/piix.c
@@ -1,7 +1,7 @@
 /*
  *  Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
  *  Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
- *  Copyright (C) 2003 Red Hat Inc <alan@redhat.com>
+ *  Copyright (C) 2003 Red Hat
  *  Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
  *
  *  May be copied or modified under the terms of the GNU General Public License
diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c
index f26aa5d54efb..0f48f9dacfa5 100644
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -5,7 +5,7 @@
  *
  * This code is based on drivers/ide/pci/siimage.c:
  * Copyright (C) 2001-2002      Andre Hedrick <andre@linux-ide.org>
- * Copyright (C) 2003           Red Hat <alan@redhat.com>
+ * Copyright (C) 2003           Red Hat
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/drivers/ide/siimage.c b/drivers/ide/siimage.c
index c3107df7773d..7d622d20bc4c 100644
--- a/drivers/ide/siimage.c
+++ b/drivers/ide/siimage.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2002      Andre Hedrick <andre@linux-ide.org>
- * Copyright (C) 2003           Red Hat <alan@redhat.com>
+ * Copyright (C) 2003           Red Hat
  * Copyright (C) 2007-2008      MontaVista Software, Inc.
  * Copyright (C) 2007-2008      Bartlomiej Zolnierkiewicz
  *
diff --git a/drivers/ide/tx4938ide.c b/drivers/ide/tx4938ide.c
index fa660f931a11..9120063e8f87 100644
--- a/drivers/ide/tx4938ide.c
+++ b/drivers/ide/tx4938ide.c
@@ -26,12 +26,13 @@ static void tx4938ide_tune_ebusc(unsigned int ebus_ch,
         unsigned int sp = (cr >> 4) & 3;
         unsigned int clock = gbus_clock / (4 - sp);
         unsigned int cycle = 1000000000 / clock;
-        unsigned int wt, shwt;
+        unsigned int shwt;
+        int wt;
 
         /* Minimum DIOx- active time */
         wt = DIV_ROUND_UP(t->act8b, cycle) - 2;
         /* IORDY setup time: 35ns */
-        wt = max(wt, DIV_ROUND_UP(35, cycle));
+        wt = max_t(int, wt, DIV_ROUND_UP(35, cycle));
         /* actual wait-cycle is max(wt & ~1, 1) */
         if (wt > 2 && (wt & 1))
                 wt++;
@@ -39,10 +40,17 @@ static void tx4938ide_tune_ebusc(unsigned int ebus_ch,
         /* Address-valid to DIOR/DIOW setup */
         shwt = DIV_ROUND_UP(t->setup, cycle);
 
+        /* -DIOx recovery time (SHWT * 4) and cycle time requirement */
+        while ((shwt * 4 + wt + (wt ? 2 : 3)) * cycle < t->cycle)
+                shwt++;
+        if (shwt > 7) {
+                pr_warning("tx4938ide: SHWT violation (%d)\n", shwt);
+                shwt = 7;
+        }
         pr_debug("tx4938ide: ebus %d, bus cycle %dns, WT %d, SHWT %d\n",
                  ebus_ch, cycle, wt, shwt);
 
-        __raw_writeq((cr & ~(0x3f007ull)) | (wt << 12) | shwt,
+        __raw_writeq((cr & ~0x3f007ull) | (wt << 12) | shwt,
                      &tx4938_ebuscptr->cr[ebus_ch]);
 }
 
@@ -228,7 +236,7 @@ static int __init tx4938ide_probe(struct platform_device *pdev)
         struct resource *res;
         struct tx4938ide_platform_info *pdata = pdev->dev.platform_data;
         int irq, ret, i;
-        unsigned long mapbase;
+        unsigned long mapbase, mapctl;
         struct ide_port_info d = tx4938ide_port_info;
 
         irq = platform_get_irq(pdev, 0);
@@ -242,38 +250,43 @@ static int __init tx4938ide_probe(struct platform_device *pdev)
                                      res->end - res->start + 1, "tx4938ide"))
                 return -EBUSY;
         mapbase = (unsigned long)devm_ioremap(&pdev->dev, res->start,
-                                              res->end - res->start + 1);
-        if (!mapbase)
+                                              8 << pdata->ioport_shift);
+        mapctl = (unsigned long)devm_ioremap(&pdev->dev,
+                                             res->start + 0x10000 +
+                                             (6 << pdata->ioport_shift),
+                                             1 << pdata->ioport_shift);
+        if (!mapbase || !mapctl)
                 return -EBUSY;
 
         memset(&hw, 0, sizeof(hw));
         if (pdata->ioport_shift) {
                 unsigned long port = mapbase;
+                unsigned long ctl = mapctl;
 
                 hw.io_ports_array[0] = port;
 #ifdef __BIG_ENDIAN
                 port++;
+                ctl++;
 #endif
                 for (i = 1; i <= 7; i++)
                         hw.io_ports_array[i] =
                                 port + (i << pdata->ioport_shift);
-                hw.io_ports.ctl_addr =
-                        port + 0x10000 + (6 << pdata->ioport_shift);
+                hw.io_ports.ctl_addr = ctl;
         } else
-                ide_std_init_ports(&hw, mapbase, mapbase + 0x10006);
+                ide_std_init_ports(&hw, mapbase, mapctl);
         hw.irq = irq;
         hw.dev = &pdev->dev;
 
-        pr_info("TX4938 IDE interface (base %#lx, irq %d)\n", mapbase, hw.irq);
+        pr_info("TX4938 IDE interface (base %#lx, ctl %#lx, irq %d)\n",
+                mapbase, mapctl, hw.irq);
         if (pdata->gbus_clock)
                 tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, 0);
         else
                 d.port_ops = NULL;
         ret = ide_host_add(&d, hws, &host);
-        if (ret)
-                return ret;
-        platform_set_drvdata(pdev, host);
-        return 0;
+        if (!ret)
+                platform_set_drvdata(pdev, host);
+        return ret;
 }
 
 static int __exit tx4938ide_remove(struct platform_device *pdev)