diff options
| author | Dave Airlie <airlied@redhat.com> | 2009-03-28 20:22:18 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-03-28 20:22:18 -0400 |
| commit | 90f959bcb386da2c71613dcefc6a285e054a539e (patch) | |
| tree | ee3e9dd4111d4aad12e579cb0c2c159114dff263 /drivers/ata/libata-core.c | |
| parent | 41f13fe81dd1b08723ab9f3fc3c7f29cfa81f1a5 (diff) | |
| parent | 07d43ba98621f08e252a48c96b258b4d572b0257 (diff) | |
drm: merge Linux master into HEAD
Conflicts:
drivers/gpu/drm/drm_info.c
drivers/gpu/drm/drm_proc.c
drivers/gpu/drm/i915/i915_gem_debugfs.c
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 060bcd601f57..e7ea77cf6069 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -57,6 +57,7 @@ #include <linux/scatterlist.h> #include <linux/io.h> #include <linux/async.h> +#include <linux/log2.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_host.h> @@ -2389,6 +2390,7 @@ int ata_dev_configure(struct ata_device *dev) dev->cylinders = 0; dev->heads = 0; dev->sectors = 0; + dev->multi_count = 0; /* * common ATA, ATAPI feature tests @@ -2426,8 +2428,15 @@ int ata_dev_configure(struct ata_device *dev) dev->n_sectors = ata_id_n_sectors(id); - if (dev->id[59] & 0x100) - dev->multi_count = dev->id[59] & 0xff; + /* get current R/W Multiple count setting */ + if ((dev->id[47] >> 8) == 0x80 && (dev->id[59] & 0x100)) { + unsigned int max = dev->id[47] & 0xff; + unsigned int cnt = dev->id[59] & 0xff; + /* only recognize/allow powers of two here */ + if (is_power_of_2(max) && is_power_of_2(cnt)) + if (cnt <= max) + dev->multi_count = cnt; + } if (ata_id_has_lba(id)) { const char *lba_desc; @@ -6709,6 +6718,7 @@ EXPORT_SYMBOL_GPL(ata_id_c_string); EXPORT_SYMBOL_GPL(ata_do_dev_read_id); EXPORT_SYMBOL_GPL(ata_scsi_simulate); +EXPORT_SYMBOL_GPL(ata_pio_queue_task); EXPORT_SYMBOL_GPL(ata_pio_need_iordy); EXPORT_SYMBOL_GPL(ata_timing_find_mode); EXPORT_SYMBOL_GPL(ata_timing_compute); |