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Date: Thu, 22 Sep 2022 15:33:04 +0000
From: "Limonciello, Mario" <Mario.Limonciello@....com>
To: Nathan Chancellor <nathan@...nel.org>,
"S-k, Shyam-sundar" <Shyam-sundar.S-k@....com>,
Hans de Goede <hdegoede@...hat.com>,
Mark Gross <markgross@...nel.org>
CC: "platform-driver-x86@...r.kernel.org"
<platform-driver-x86@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [PATCH] platform/x86/amd: pmc: Fix build without debugfs
[Public]
> -----Original Message-----
> From: Nathan Chancellor <nathan@...nel.org>
> Sent: Thursday, September 22, 2022 10:31
> To: S-k, Shyam-sundar <Shyam-sundar.S-k@....com>; Limonciello, Mario
> <Mario.Limonciello@....com>; Hans de Goede <hdegoede@...hat.com>;
> Mark Gross <markgross@...nel.org>
> Cc: platform-driver-x86@...r.kernel.org; linux-kernel@...r.kernel.org;
> patches@...ts.linux.dev; Nathan Chancellor <nathan@...nel.org>
> Subject: [PATCH] platform/x86/amd: pmc: Fix build without debugfs
>
> Without CONFIG_DEBUG_FS, the following build error occurs:
>
> drivers/platform/x86/amd/pmc.c:984:17: error: use of undeclared identifier
> 'pmc_groups'; did you mean 'set_groups'?
> .dev_groups = pmc_groups,
> ^~~~~~~~~~
> set_groups
> ./include/linux/cred.h:65:13: note: 'set_groups' declared here
> extern void set_groups(struct cred *, struct group_info *);
> ^
> drivers/platform/x86/amd/pmc.c:984:17: error: incompatible pointer types
> initializing 'const struct attribute_group **' with an expression of type 'void
> (struct cred *, struct group_info *)' [-Werror,-Wincompatible-pointer-types]
> .dev_groups = pmc_groups,
> ^~~~~~~~~~
> 2 errors generated.
>
> pmc_groups was only defined inside a CONFIG_DEBUG_FS block but
> commit 7f1ea75d499a ("platform/x86/amd: pmc: Add sysfs files for SMU")
> intended for these sysfs files to be available outside of debugfs.
> Shuffle the necessary functions out of the CONFIG_DEBUG_FS block so that
> the file always builds.
>
> Fixes: 7f1ea75d499a ("platform/x86/amd: pmc: Add sysfs files for SMU")
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>
Thanks a lot for the fix!
Reviewed-by: Mario Limonciello <mario.limonciello@....com>
> ---
> drivers/platform/x86/amd/pmc.c | 116 ++++++++++++++++-----------------
> 1 file changed, 58 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/platform/x86/amd/pmc.c
> b/drivers/platform/x86/amd/pmc.c
> index 0616ef8ce64c..e47e54b095af 100644
> --- a/drivers/platform/x86/amd/pmc.c
> +++ b/drivers/platform/x86/amd/pmc.c
> @@ -371,6 +371,64 @@ static void amd_pmc_validate_deepest(struct
> amd_pmc_dev *pdev)
> }
> #endif
>
> +static int amd_pmc_get_smu_version(struct amd_pmc_dev *dev)
> +{
> + int rc;
> + u32 val;
> +
> + rc = amd_pmc_send_cmd(dev, 0, &val,
> SMU_MSG_GETSMUVERSION, 1);
> + if (rc)
> + return rc;
> +
> + dev->smu_program = (val >> 24) & GENMASK(7, 0);
> + dev->major = (val >> 16) & GENMASK(7, 0);
> + dev->minor = (val >> 8) & GENMASK(7, 0);
> + dev->rev = (val >> 0) & GENMASK(7, 0);
> +
> + dev_dbg(dev->dev, "SMU program %u version is %u.%u.%u\n",
> + dev->smu_program, dev->major, dev->minor, dev->rev);
> +
> + return 0;
> +}
> +
> +static ssize_t smu_fw_version_show(struct device *d, struct
> device_attribute *attr,
> + char *buf)
> +{
> + struct amd_pmc_dev *dev = dev_get_drvdata(d);
> +
> + if (!dev->major) {
> + int rc = amd_pmc_get_smu_version(dev);
> +
> + if (rc)
> + return rc;
> + }
> + return sysfs_emit(buf, "%u.%u.%u\n", dev->major, dev->minor,
> dev->rev);
> +}
> +
> +static ssize_t smu_program_show(struct device *d, struct device_attribute
> *attr,
> + char *buf)
> +{
> + struct amd_pmc_dev *dev = dev_get_drvdata(d);
> +
> + if (!dev->major) {
> + int rc = amd_pmc_get_smu_version(dev);
> +
> + if (rc)
> + return rc;
> + }
> + return sysfs_emit(buf, "%u\n", dev->smu_program);
> +}
> +
> +static DEVICE_ATTR_RO(smu_fw_version);
> +static DEVICE_ATTR_RO(smu_program);
> +
> +static struct attribute *pmc_attrs[] = {
> + &dev_attr_smu_fw_version.attr,
> + &dev_attr_smu_program.attr,
> + NULL,
> +};
> +ATTRIBUTE_GROUPS(pmc);
> +
> #ifdef CONFIG_DEBUG_FS
> static int smu_fw_info_show(struct seq_file *s, void *unused)
> {
> @@ -437,64 +495,6 @@ static int s0ix_stats_show(struct seq_file *s, void
> *unused)
> }
> DEFINE_SHOW_ATTRIBUTE(s0ix_stats);
>
> -static int amd_pmc_get_smu_version(struct amd_pmc_dev *dev)
> -{
> - int rc;
> - u32 val;
> -
> - rc = amd_pmc_send_cmd(dev, 0, &val,
> SMU_MSG_GETSMUVERSION, 1);
> - if (rc)
> - return rc;
> -
> - dev->smu_program = (val >> 24) & GENMASK(7, 0);
> - dev->major = (val >> 16) & GENMASK(7, 0);
> - dev->minor = (val >> 8) & GENMASK(7, 0);
> - dev->rev = (val >> 0) & GENMASK(7, 0);
> -
> - dev_dbg(dev->dev, "SMU program %u version is %u.%u.%u\n",
> - dev->smu_program, dev->major, dev->minor, dev->rev);
> -
> - return 0;
> -}
> -
> -static ssize_t smu_fw_version_show(struct device *d, struct
> device_attribute *attr,
> - char *buf)
> -{
> - struct amd_pmc_dev *dev = dev_get_drvdata(d);
> -
> - if (!dev->major) {
> - int rc = amd_pmc_get_smu_version(dev);
> -
> - if (rc)
> - return rc;
> - }
> - return sysfs_emit(buf, "%u.%u.%u\n", dev->major, dev->minor,
> dev->rev);
> -}
> -
> -static ssize_t smu_program_show(struct device *d, struct device_attribute
> *attr,
> - char *buf)
> -{
> - struct amd_pmc_dev *dev = dev_get_drvdata(d);
> -
> - if (!dev->major) {
> - int rc = amd_pmc_get_smu_version(dev);
> -
> - if (rc)
> - return rc;
> - }
> - return sysfs_emit(buf, "%u\n", dev->smu_program);
> -}
> -
> -static DEVICE_ATTR_RO(smu_fw_version);
> -static DEVICE_ATTR_RO(smu_program);
> -
> -static struct attribute *pmc_attrs[] = {
> - &dev_attr_smu_fw_version.attr,
> - &dev_attr_smu_program.attr,
> - NULL,
> -};
> -ATTRIBUTE_GROUPS(pmc);
> -
> static int amd_pmc_idlemask_show(struct seq_file *s, void *unused)
> {
> struct amd_pmc_dev *dev = s->private;
>
> base-commit: 401199ffa9b69baf3fd1f9ad082aa65c10910585
> --
> 2.37.3
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