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ata: fixup ATA_PROT_NODATA

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The taskfile protocol is a numeric value, and can not be ORed.  Currently
this is harmless as the protocol is always zeroed before, but if it ever
has a non-zero value the ORing would create incorrect results.

Signed-off-by: Hannes Reinecke <hare@suse.de>
[hch: updated patch description]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hannes Reinecke 2016-07-14 09:05:46 +09:00 committed by Tejun Heo
parent b38d4d85b8
commit bd18bc04ca
2 changed files with 3 additions and 3 deletions
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4
drivers/ata/libata-core.c
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@ -1238,7 +1238,7 @@ static int ata_read_native_max_address(struct ata_device *dev, u64 *max_sectors)
} else
tf.command = ATA_CMD_READ_NATIVE_MAX;
tf.protocol |= ATA_PROT_NODATA;
tf.protocol = ATA_PROT_NODATA;
tf.device |= ATA_LBA;
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
@ -1297,7 +1297,7 @@ static int ata_set_max_sectors(struct ata_device *dev, u64 new_sectors)
tf.device |= (new_sectors >> 24) & 0xf;
}
tf.protocol |= ATA_PROT_NODATA;
tf.protocol = ATA_PROT_NODATA;
tf.device |= ATA_LBA;
tf.lbal = (new_sectors >> 0) & 0xff;

2
drivers/ata/libata-eh.c
View file

@ -3177,7 +3177,7 @@ static void ata_eh_park_issue_cmd(struct ata_device *dev, int park)
}
tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
tf.protocol |= ATA_PROT_NODATA;
tf.protocol = ATA_PROT_NODATA;
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
if (park && (err_mask || tf.lbal != 0xc4)) {
ata_dev_err(dev, "head unload failed!\n");