mtip32xx: fix user_buffer check in exec_drive_command
Current user_buffer check is incorrect and causes hdparm to fail # hdparm -I /dev/rssda HDIO_DRIVE_CMD(identify) failed: Input/output error /dev/rssda: Patching linux-3.6-rc5 hdparm works as expected # hdparm -I /dev/rssda /dev/rssda: ATA device, with non-removable media Model Number: DELL_P320h-MTFDGAL350SAH Serial Number: 00000000121302025F01 Firmware Revision: B1442808 <snip> Reported-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: David Milburn <dmilburn@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -1904,7 +1904,7 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
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int rv = 0, xfer_sz = command[3];
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int rv = 0, xfer_sz = command[3];
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if (xfer_sz) {
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if (xfer_sz) {
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if (user_buffer)
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if (!user_buffer)
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return -EFAULT;
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return -EFAULT;
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buf = dmam_alloc_coherent(&port->dd->pdev->dev,
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buf = dmam_alloc_coherent(&port->dd->pdev->dev,
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