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| author | Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> | 2013-06-23 23:25:04 +0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-06-24 15:45:28 -0700 |
| commit | d0887c43f51c308b01605346e55d906ba858a6f9 (patch) | |
| tree | 3a8a73f1b10ef05984f55e09e6e9f0569eb80e97 /drivers/ata | |
| parent | 78062c50d15d6a0adfa09f6e35a6c52abcc9a32d (diff) | |
| download | lwn-d0887c43f51c308b01605346e55d906ba858a6f9.tar.gz lwn-d0887c43f51c308b01605346e55d906ba858a6f9.zip | |
libata-zpodd: must use ata_tf_init()
There are some SATA controllers which have both devices 0 and 1 but this module
just zeroes out taskfile and sets then ATA_TFLAG_DEVICE (not sure that's needed)
which could lead to a wrong device being selected just before issuing command.
Thus we should call ata_tf_init() which sets up the device register value
properly, like all other users of ata_exec_internal() do...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-zpodd.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/ata/libata-zpodd.c b/drivers/ata/libata-zpodd.c index 90b159b740b3..cd8daf47188b 100644 --- a/drivers/ata/libata-zpodd.c +++ b/drivers/ata/libata-zpodd.c @@ -32,13 +32,14 @@ struct zpodd { static int eject_tray(struct ata_device *dev) { - struct ata_taskfile tf = {}; + struct ata_taskfile tf; const char cdb[] = { GPCMD_START_STOP_UNIT, 0, 0, 0, 0x02, /* LoEj */ 0, 0, 0, 0, 0, 0, 0, }; + ata_tf_init(dev, &tf); tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; tf.command = ATA_CMD_PACKET; tf.protocol = ATAPI_PROT_NODATA; @@ -52,8 +53,7 @@ static enum odd_mech_type zpodd_get_mech_type(struct ata_device *dev) char buf[16]; unsigned int ret; struct rm_feature_desc *desc = (void *)(buf + 8); - struct ata_taskfile tf = {}; - + struct ata_taskfile tf; char cdb[] = { GPCMD_GET_CONFIGURATION, 2, /* only 1 feature descriptor requested */ 0, 3, /* 3, removable medium feature */ @@ -62,6 +62,7 @@ static enum odd_mech_type zpodd_get_mech_type(struct ata_device *dev) 0, 0, 0, }; + ata_tf_init(dev, &tf); tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; tf.command = ATA_CMD_PACKET; tf.protocol = ATAPI_PROT_PIO; |