diff options
| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-08-20 22:42:57 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-08-20 22:42:57 +0200 |
| commit | b0244a00451c1ad64bf0a51f50679f7146786780 (patch) | |
| tree | 14f7725795ba27712a6d76820dde336ad6a17ef8 | |
| parent | 76e1faa7cfd464fa06a9c2cafd633d643daafeae (diff) | |
| download | kernel_samsung_smdk4412-b0244a00451c1ad64bf0a51f50679f7146786780.zip kernel_samsung_smdk4412-b0244a00451c1ad64bf0a51f50679f7146786780.tar.gz kernel_samsung_smdk4412-b0244a00451c1ad64bf0a51f50679f7146786780.tar.bz2 | |
ide-disk: workaround for buggy HPA support on ST340823A (take 3)
This disk reports total number of sectors instead of maximum sector address
in response to READ_NATIVE_MAX_ADDRESS command and also happily accepts
SET_MAX_ADDRESS command with the bogus value. This results in +1 sector
capacity being used and errors on attempts to use the last sector.
...
hdd: Host Protected Area detected.
    current capacity is 78165360 sectors (40020 MB)
    native  capacity is 78165361 sectors (40020 MB)
hdd: Host Protected Area disabled.
...
hdd: reading: block=78165360, sectors=1, buffer=0xc1e63000
hdd: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdd: dma_intr: error=0x10 { SectorIdNotFound }, LBAsect=78165360, sector=78165360
...
Add hpa_list[] table and workaround the issue in idedisk_check_hpa().
v2:
* Add missing export and improve patch description a bit.
v3:
* Add list termination. (From Mikko)
Fixes kernel bugzilla bug #8816.
Thanks to Mikko for investigating the issue and helping with this patch.
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| -rw-r--r-- | drivers/ide/ide-disk.c | 18 | ||||
| -rw-r--r-- | drivers/ide/ide-iops.c | 2 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index 5ce4216..eba1adb 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -481,6 +481,15 @@ static inline int idedisk_supports_lba48(const struct hd_driveid *id) && id->lba_capacity_2; } +/* + * Some disks report total number of sectors instead of + * maximum sector address. We list them here. + */ +static const struct drive_list_entry hpa_list[] = { + { "ST340823A", NULL }, + { NULL, NULL } +}; + static void idedisk_check_hpa(ide_drive_t *drive) { unsigned long long capacity, set_max; @@ -492,6 +501,15 @@ static void idedisk_check_hpa(ide_drive_t *drive) else set_max = idedisk_read_native_max_address(drive); + if (ide_in_drive_list(drive->id, hpa_list)) { + /* + * Since we are inclusive wrt to firmware revisions do this + * extra check and apply the workaround only when needed. + */ + if (set_max == capacity + 1) + set_max--; + } + if (set_max <= capacity) return; diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index 18cf3a6..f4cd270 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -584,6 +584,8 @@ int ide_in_drive_list(struct hd_driveid *id, const struct drive_list_entry *driv return 0; } +EXPORT_SYMBOL_GPL(ide_in_drive_list); + /* * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid. * We list them here and depend on the device side cable detection for them. |