On Fri, 2022-12-30 at 15:20 +1100, Russell Currey wrote:
> The code that handles the format string in secvar-sysfs.c is entirely
> OPAL specific, so create a new "format" op in secvar_operations to
> make
> the secvar code more generic. No functional change.
>
> Signed-off-by: Russell Currey <rus...@russell.cc>
LGTM
Reviewed-by: Andrew Donnellan <a...@linux.ibm.com>
> ---
> arch/powerpc/include/asm/secvar.h | 1 +
> arch/powerpc/kernel/secvar-sysfs.c | 21 +---------------
> arch/powerpc/platforms/powernv/opal-secvar.c | 25
> ++++++++++++++++++++
> 3 files changed, 27 insertions(+), 20 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/secvar.h
> b/arch/powerpc/include/asm/secvar.h
> index 4cc35b58b986..3b7e5a3625bd 100644
> --- a/arch/powerpc/include/asm/secvar.h
> +++ b/arch/powerpc/include/asm/secvar.h
> @@ -20,6 +20,7 @@ struct secvar_operations {
> uint64_t keybufsize);
> int (*set)(const char *key, uint64_t key_len, u8 *data,
> uint64_t data_size);
> + ssize_t (*format)(char *buf);
> };
>
> #ifdef CONFIG_PPC_SECURE_BOOT
> diff --git a/arch/powerpc/kernel/secvar-sysfs.c
> b/arch/powerpc/kernel/secvar-sysfs.c
> index 02e9fee1552e..190238f51335 100644
> --- a/arch/powerpc/kernel/secvar-sysfs.c
> +++ b/arch/powerpc/kernel/secvar-sysfs.c
> @@ -21,26 +21,7 @@ static struct kset *secvar_kset;
> static ssize_t format_show(struct kobject *kobj, struct
> kobj_attribute *attr,
> char *buf)
> {
> - ssize_t rc = 0;
> - struct device_node *node;
> - const char *format;
> -
> - node = of_find_compatible_node(NULL, NULL, "ibm,secvar-
> backend");
> - if (!of_device_is_available(node)) {
> - rc = -ENODEV;
> - goto out;
> - }
> -
> - rc = of_property_read_string(node, "format", &format);
> - if (rc)
> - goto out;
> -
> - rc = sysfs_emit(buf, "%s\n", format);
> -
> -out:
> - of_node_put(node);
> -
> - return rc;
> + return secvar_ops->format(buf);
> }
>
>
> diff --git a/arch/powerpc/platforms/powernv/opal-secvar.c
> b/arch/powerpc/platforms/powernv/opal-secvar.c
> index 14133e120bdd..5e9de06b2533 100644
> --- a/arch/powerpc/platforms/powernv/opal-secvar.c
> +++ b/arch/powerpc/platforms/powernv/opal-secvar.c
> @@ -101,10 +101,35 @@ static int opal_set_variable(const char *key,
> uint64_t ksize, u8 *data,
> return opal_status_to_err(rc);
> }
>
> +static ssize_t opal_secvar_format(char *buf)
> +{
> + ssize_t rc = 0;
> + struct device_node *node;
> + const char *format;
> +
> + node = of_find_compatible_node(NULL, NULL, "ibm,secvar-
> backend");
> + if (!of_device_is_available(node)) {
> + rc = -ENODEV;
> + goto out;
> + }
> +
> + rc = of_property_read_string(node, "format", &format);
> + if (rc)
> + goto out;
> +
> + rc = sysfs_emit(buf, "%s\n", format);
> +
> +out:
> + of_node_put(node);
> +
> + return rc;
> +}
> +
> static const struct secvar_operations opal_secvar_ops = {
> .get = opal_get_variable,
> .get_next = opal_get_next_variable,
> .set = opal_set_variable,
> + .format = opal_secvar_format,
> };
>
> static int opal_secvar_probe(struct platform_device *pdev)
--
Andrew Donnellan OzLabs, ADL Canberra
a...@linux.ibm.com IBM Australia Limited
