diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2993-drm-amd-powerplay-maintain-SMU-FW-backward-compatibi.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2993-drm-amd-powerplay-maintain-SMU-FW-backward-compatibi.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2993-drm-amd-powerplay-maintain-SMU-FW-backward-compatibi.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2993-drm-amd-powerplay-maintain-SMU-FW-backward-compatibi.patch new file mode 100644 index 00000000..b73fd571 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2993-drm-amd-powerplay-maintain-SMU-FW-backward-compatibi.patch @@ -0,0 +1,47 @@ +From 49546878f068753b202b7778c6c4480117a17be5 Mon Sep 17 00:00:00 2001 +From: Evan Quan <evan.quan@amd.com> +Date: Tue, 16 Jul 2019 14:20:22 +0800 +Subject: [PATCH 2993/4256] drm/amd/powerplay: maintain SMU FW backward + compatibility + +Do not halt driver loading on if_version mismatch. As our +driver and FWs are backward compatible. + +Change-Id: I01271202d08a62e775efabfb66310f6cc742b9dd +Signed-off-by: Evan Quan <evan.quan@amd.com> +Reviewed-by: Kenneth Feng <kenneth.feng@amd.com> +--- + drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 12 +++++++++--- + 1 file changed, 9 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c +index 9f60e5c78ba0..76bc157525d0 100644 +--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c ++++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c +@@ -267,14 +267,20 @@ static int smu_v11_0_check_fw_version(struct smu_context *smu) + smu_minor = (smu_version >> 8) & 0xff; + smu_debug = (smu_version >> 0) & 0xff; + +- ++ /* ++ * 1. if_version mismatch is not critical as our fw is designed ++ * to be backward compatible. ++ * 2. New fw usually brings some optimizations. But that's visible ++ * only on the paired driver. ++ * Considering above, we just leave user a warning message instead ++ * of halt driver loading. ++ */ + if (if_version != smu->smc_if_version) { + pr_info("smu driver if version = 0x%08x, smu fw if version = 0x%08x, " + "smu fw version = 0x%08x (%d.%d.%d)\n", + smu->smc_if_version, if_version, + smu_version, smu_major, smu_minor, smu_debug); +- pr_err("SMU driver if version not matched\n"); +- ret = -EINVAL; ++ pr_warn("SMU driver if version not matched\n"); + } + + return ret; +-- +2.17.1 + |