The patch titled
pata_ali: lots of problems still showing up with small ATAPI DMA
has been added to the -mm tree. Its filename is
pata_ali-lots-of-problems-still-showing-up-with-small-atapi-dma.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: pata_ali: lots of problems still showing up with small ATAPI DMA
From: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Hopefully there is a better long term solution but for now lets favour
reliability.
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/ata/pata_ali.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff -puN drivers/ata/pata_ali.c~pata_ali-lots-of-problems-still-showing-up-with-small-atapi-dma drivers/ata/pata_ali.c
--- a/drivers/ata/pata_ali.c~pata_ali-lots-of-problems-still-showing-up-with-small-atapi-dma
+++ a/drivers/ata/pata_ali.c
@@ -285,6 +285,21 @@ static void ali_lock_sectors(struct ata_
adev->max_sectors = 255;
}
+/**
+ * ali_check_atapi_dma - DMA check for most ALi controllers
+ * @adev: Device
+ *
+ * Called to decide whether commands should be sent by DMA or PIO
+ */
+
+static int ali_check_atapi_dma(struct ata_queued_cmd *qc)
+{
+ /* If its not a media command, its not worth it */
+ if (qc->nbytes < 2048)
+ return -EOPNOTSUPP;
+ return 0;
+}
+
static struct scsi_host_template ali_sht = {
.module = THIS_MODULE,
.name = DRV_NAME,
@@ -381,6 +396,7 @@ static struct ata_port_operations ali_c2
.mode_filter = ata_pci_default_filter,
.tf_load = ata_tf_load,
.tf_read = ata_tf_read,
+ .check_atapi_dma = ali_check_atapi_dma,
.check_status = ata_check_status,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
@@ -418,6 +434,7 @@ static struct ata_port_operations ali_c5
.mode_filter = ata_pci_default_filter,
.tf_load = ata_tf_load,
.tf_read = ata_tf_read,
+ .check_atapi_dma = ali_check_atapi_dma,
.check_status = ata_check_status,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
_
Patches currently in -mm which might be from alan@xxxxxxxxxxxxxxxxxxx are
termios-document-callback-more-clearly.patch
revert-keyspan-init-termios-properly.patch
git-arm.patch
git-libata-all.patch
pata_hpt37x-fix-outstanding-bug-reports-on-the-hpt374-and-37x-cable-detect-checkpatch-fixes.patch
libata-separate-out-ata_acpi_gtm_xfermask-from-pacpi_discover_modes.patch
libata-fix-ata_acpi_gtm_xfermask.patch
libata-implement-ata_timing_cycle2mode-and-use-it-in-libata-acpi-and-pata_acpi.patch
libata-reimplement-ata_acpi_cbl_80wire-using-ata_acpi_gtm_xfermask.patch
libata-add-ata_cbl_pata_ign.patch
pata_amd-update-mode-selection-for-nv-patas.patch
ahci-invalid-use-of-writel-readl-with-iomap.patch
libata-core-list-more-documentation-sources-for-reference.patch
libata-iordy-handling.patch
libata-sff-tf_load.patch
pata_ali-add-mitac-8317-and-derivatives.patch
pata_ali-lots-of-problems-still-showing-up-with-small-atapi-dma.patch
pata_hpt37x-fix-cable-detect-bug-spotted-by-sergei.patch
pata_isapnp-polled-devices.patch
pata_pcmcia-minor-cleanups-and-support-for-dual-channel-cards.patch
pata_ninja32-cardbus-ata-initial-support.patch
pcmcia-convert-some-internal-only-ioaddr_t-to-unsigned-int.patch
pcmcia-replace-kio_addr_t-with-unsigned-int-everywhere.patch
serial-keep-the-dtr-setting-for-serial-console.patch
quirk_vialatency-omit-reading-pci-revision-id.patch
quirk_vialatency-omit-reading-pci-revision-id-checkpatch-fixes.patch
git-scsi-rc-fixes.patch
initio-fix-conflict-when-loading-driver.patch
pata_amd-pata_via-de-couple-programming-of-pio-mwdma-and-udma-timings.patch
geode-lists-are-subscriber-only.patch
tty-kill-tty_flipbuf_size.patch
drivers-edac-turnon-edac-device-error-logging.patch
drivers-edac-use-round_jiffies_relative.patch
drivers-edac-add-cell-xdr-memory-types.patch
drivers-edac-add-cell-mc-driver.patch
drivers-edac-i3000-code-tidying.patch
drivers-edac-i3000-replace-macros-with-functions.patch
drivers-edac-add-freescale-mpc85xx-driver.patch
drivers-edac-add-marvell-mv64x60-driver.patch
drivers-edac-add-marvell-mv64x60-driver-fix.patch
dz-clean-up-and-improve-the-setup-of-termios-settings.patch
char-rocket-switch-long-delay-to-sleep.patch
char-rocket-printk-cleanup.patch
char-char-serial-remove-serial_type_normal-redefines.patch
char-mxser_new-ioaddresses-are-ulong.patch
char-stallion-fix-compiler-warnings.patch
char-riscom8-change-rc_init_drivers-prototype.patch
tty-add-the-new-termios2-ioctls-to-the-compatible.patch
tty-let-architectures-override-the-user-kernel-macros.patch
tty-s390-support-for-termios2.patch
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