Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.drivers / libata-sata_via-load-DEVICE-register-when-CTL-changes

diff --git a/src/patches/suse-2.6.27.31/patches.drivers/libata-sata_via-load-DEVICE-register-when-CTL-changes b/src/patches/suse-2.6.27.31/patches.drivers/libata-sata_via-load-DEVICE-register-when-CTL-changes
new file mode 100644 (file)
index 0000000..71c4a8d
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.drivers/libata-sata_via-load-DEVICE-register-when-CTL-changes
@@ -0,0 +1,96 @@
+From b78152e9dbab6d6175e2adcbd8c62959e8f0f922 Mon Sep 17 00:00:00 2001
+From: Tejun Heo <tj@kernel.org>
+Date: Wed, 22 Oct 2008 00:45:57 +0900
+Subject: [PATCH] sata_via: load DEVICE register when CTL changes
+References: bnc#441718
+
+VIA controllers clear DEVICE register when IEN changes.  Make sure
+DEVICE is updated along with CTL.
+
+This change is separated from Joseph Chan's larger patch.
+
+  http://thread.gmane.org/gmane.linux.kernel.commits.mm/40640
+
+Signed-off-by: Tejun Heo <tj@kernel.org>
+Cc: Joseph Chan <JosephChan@via.com.tw>
+Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
+Signed-off-by: Tejun Heo <teheo@suse.de>
+---
+ drivers/ata/sata_via.c |   35 ++++++++++++++++++++++++++++++++---
+ 1 files changed, 32 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
+index 1cfa745..5b72e73 100644
+--- a/drivers/ata/sata_via.c
++++ b/drivers/ata/sata_via.c
+@@ -70,6 +70,7 @@ enum {
+ static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
+ static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
+ static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
++static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
+ static void svia_noop_freeze(struct ata_port *ap);
+ static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
+ static int vt6421_pata_cable_detect(struct ata_port *ap);
+@@ -103,21 +104,26 @@ static struct scsi_host_template svia_sht = {
+       ATA_BMDMA_SHT(DRV_NAME),
+ };
+ 
+-static struct ata_port_operations vt6420_sata_ops = {
++static struct ata_port_operations svia_base_ops = {
+       .inherits               = &ata_bmdma_port_ops,
++      .sff_tf_load            = svia_tf_load,
++};
++
++static struct ata_port_operations vt6420_sata_ops = {
++      .inherits               = &svia_base_ops,
+       .freeze                 = svia_noop_freeze,
+       .prereset               = vt6420_prereset,
+ };
+ 
+ static struct ata_port_operations vt6421_pata_ops = {
+-      .inherits               = &ata_bmdma_port_ops,
++      .inherits               = &svia_base_ops,
+       .cable_detect           = vt6421_pata_cable_detect,
+       .set_piomode            = vt6421_set_pio_mode,
+       .set_dmamode            = vt6421_set_dma_mode,
+ };
+ 
+ static struct ata_port_operations vt6421_sata_ops = {
+-      .inherits               = &ata_bmdma_port_ops,
++      .inherits               = &svia_base_ops,
+       .scr_read               = svia_scr_read,
+       .scr_write              = svia_scr_write,
+ };
+@@ -168,6 +174,29 @@ static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
+       return 0;
+ }
+ 
++/**
++ *    svia_tf_load - send taskfile registers to host controller
++ *    @ap: Port to which output is sent
++ *    @tf: ATA taskfile register set
++ *
++ *    Outputs ATA taskfile to standard ATA host controller.
++ *
++ *    This is to fix the internal bug of via chipsets, which will
++ *    reset the device register after changing the IEN bit on ctl
++ *    register.
++ */
++static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
++{
++      struct ata_taskfile ttf;
++
++      if (tf->ctl != ap->last_ctl)  {
++              ttf = *tf;
++              ttf.flags |= ATA_TFLAG_DEVICE;
++              tf = &ttf;
++      }
++      ata_sff_tf_load(ap, tf);
++}
++
+ static void svia_noop_freeze(struct ata_port *ap)
+ {
+       /* Some VIA controllers choke if ATA_NIEN is manipulated in
+-- 
+1.5.4.5
+