On Fri, Mar 24, 2017 at 02:33:02PM +1100, Stephen Rothwell wrote:
> Hi all,
>
> Today's linux-next merge of the char-misc tree got a conflict in:
>
> drivers/char/tpm/tpm-chip.c
>
> between commits:
>
> 67b67480db8b ("tpm: infrastructure for TPM spaces")
> b8e3586e8536 ("tpm: expose spaces via a device link /dev/tpmrm<n>")
>
> from the tpmdd tree and commit:
>
> 8dbbf5825181 ("tpm-chip: utilize new cdev_device_add helper function")
>
> from the char-misc tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging. You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
>
> --
> Cheers,
> Stephen Rothwell
>
> diff --cc drivers/char/tpm/tpm-chip.c
> index aade6995f310,935f0e92ad61..000000000000
> --- a/drivers/char/tpm/tpm-chip.c
> +++ b/drivers/char/tpm/tpm-chip.c
> @@@ -214,22 -186,7 +214,20 @@@ struct tpm_chip *tpm_chip_alloc(struct
> chip->flags |= TPM_CHIP_FLAG_VIRTUAL;
>
> cdev_init(&chip->cdev, &tpm_fops);
> + cdev_init(&chip->cdevs, &tpmrm_fops);
> chip->cdev.owner = THIS_MODULE;
> + chip->cdevs.owner = THIS_MODULE;
> - chip->cdev.kobj.parent = &chip->dev.kobj;
> - chip->cdevs.kobj.parent = &chip->devs.kobj;
> +
> + chip->work_space.context_buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
> + if (!chip->work_space.context_buf) {
> + rc = -ENOMEM;
> + goto out;
> + }
> + chip->work_space.session_buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
> + if (!chip->work_space.session_buf) {
> + rc = -ENOMEM;
> + goto out;
> + }
>
> return chip;
>
> @@@ -273,44 -229,13 +271,22 @@@ static int tpm_add_char_device(struct t
> {
> int rc;
>
> - rc = cdev_add(&chip->cdev, chip->dev.devt, 1);
> + rc = cdev_device_add(&chip->cdev, &chip->dev);
> if (rc) {
> dev_err(&chip->dev,
> - "unable to cdev_add() %s, major %d, minor %d, err=%d\n",
> + "unable to cdev_device_add() %s, major %d, minor %d, err=%d\n",
> dev_name(&chip->dev), MAJOR(chip->dev.devt),
> MINOR(chip->dev.devt), rc);
> + return rc;
> + }
>
> - rc = device_add(&chip->dev);
> - if (rc) {
> - dev_err(&chip->dev,
> - "unable to device_register() %s, major %d, minor %d, err=%d\n",
> - dev_name(&chip->dev), MAJOR(chip->dev.devt),
> - MINOR(chip->dev.devt), rc);
> -
> - cdev_del(&chip->cdev);
> - return rc;
> - }
> -
> - if (chip->flags & TPM_CHIP_FLAG_TPM2)
> - rc = cdev_add(&chip->cdevs, chip->devs.devt, 1);
> - if (rc) {
> - dev_err(&chip->dev,
> - "unable to cdev_add() %s, major %d, minor %d, err=%d\n",
> - dev_name(&chip->devs), MAJOR(chip->devs.devt),
> - MINOR(chip->devs.devt), rc);
> - return rc;
> - }
> -
> + if (chip->flags & TPM_CHIP_FLAG_TPM2)
> - rc = device_add(&chip->devs);
> ++ rc = cdev_device_add(&chip->cdevs, &chip->devs);
> + if (rc) {
> + dev_err(&chip->dev,
> - "unable to device_register() %s, major %d, minor %d, err=%d\n",
> ++ "unable to cdev_device_add() %s, major %d, minor %d, err=%d\n",
> + dev_name(&chip->devs), MAJOR(chip->devs.devt),
> + MINOR(chip->devs.devt), rc);
> - cdev_del(&chip->cdevs);
> return rc;
> }
>
> @@@ -447,10 -371,6 +422,8 @@@ void tpm_chip_unregister(struct tpm_chi
> {
> tpm_del_legacy_sysfs(chip);
> tpm_bios_log_teardown(chip);
> - if (chip->flags & TPM_CHIP_FLAG_TPM2) {
> - cdev_del(&chip->cdevs);
> - device_del(&chip->devs);
> - }
> ++ if (chip->flags & TPM_CHIP_FLAG_TPM2)
> ++ cdev_device_del(&chip->cdevs, &chip->devs);
> tpm_del_char_device(chip);
> }
> EXPORT_SYMBOL_GPL(tpm_chip_unregister);
Looks good to me, thanks!
greg k-h
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