This is a note to let you know that I've just added the patch titled
platform/x86/amd: pmc: Don't dump data after resume from s0i3 on picasso
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
platform-x86-amd-pmc-don-t-dump-data-after-resume-fr.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 331db576bf69427351d9f7b9396619950a77e295
Author: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Mon Apr 10 00:23:43 2023 +0530
platform/x86/amd: pmc: Don't dump data after resume from s0i3 on picasso
[ Upstream commit 7abc3618b65304d409d9489d77e4a8f047842fb7 ]
This command isn't supported on Picasso, so guard against running it
to avoid errors like `SMU cmd unknown. err: 0xfe` in the logs.
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2449
Fixes: 766205674962 ("platform/x86: amd-pmc: Add support for logging SMU metrics")
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Link: https://lore.kernel.org/r/20230409185348.556161-4-Shyam-sundar.S-k@xxxxxxx
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/platform/x86/amd/pmc.c b/drivers/platform/x86/amd/pmc.c
index bc8397635428e..976bd01644a5e 100644
--- a/drivers/platform/x86/amd/pmc.c
+++ b/drivers/platform/x86/amd/pmc.c
@@ -809,6 +809,14 @@ static void amd_pmc_s2idle_check(void)
dev_err(pdev->dev, "error writing to STB: %d\n", rc);
}
+static int amd_pmc_dump_data(struct amd_pmc_dev *pdev)
+{
+ if (pdev->cpu_id == AMD_CPU_ID_PCO)
+ return -ENODEV;
+
+ return amd_pmc_send_cmd(pdev, 0, NULL, SMU_MSG_LOG_DUMP_DATA, 0);
+}
+
static void amd_pmc_s2idle_restore(void)
{
struct amd_pmc_dev *pdev = &pmc;
@@ -821,7 +829,7 @@ static void amd_pmc_s2idle_restore(void)
dev_err(pdev->dev, "resume failed: %d\n", rc);
/* Let SMU know that we are looking for stats */
- amd_pmc_send_cmd(pdev, 0, NULL, SMU_MSG_LOG_DUMP_DATA, 0);
+ amd_pmc_dump_data(pdev);
rc = amd_pmc_write_stb(pdev, AMD_PMC_STB_S2IDLE_RESTORE);
if (rc)
