Re: [PATCH v6 1/7] scsi: sr: support runtime pm for ODD

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On Monday 10 September 2012 17:16:22 Aaron Lu wrote:

> +static int sr_resume(struct device *dev)
> +{
> +	struct scsi_cd *cd;
> +	struct scsi_sense_hdr sshdr;
> +
> +	cd = dev_get_drvdata(dev);
> +
> +	if (!cd->device->powered_off)
> +		return 0;
> +
> +	/* get the disk ready */
> +	scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr);
> +
> +	/* if user wakes up the ODD, eject the tray */
> +	if (cd->device->need_eject) {
> +		cd->device->need_eject = 0;
> +		if (!(cd->cdi.mask & CDC_CLOSE_TRAY))
> +			sr_tray_move(&cd->cdi, 1);

1. Even if the door is locked?
2. sr_tray_move allocates memory with GFP_KERNEL. This smells of a deadlock.

	Regards
		Oliver

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