diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3388-drm-amdkfd-Fix-SDMA-ring-buffer-size-calculation.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3388-drm-amdkfd-Fix-SDMA-ring-buffer-size-calculation.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3388-drm-amdkfd-Fix-SDMA-ring-buffer-size-calculation.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3388-drm-amdkfd-Fix-SDMA-ring-buffer-size-calculation.patch new file mode 100644 index 00000000..ab6de5a8 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3388-drm-amdkfd-Fix-SDMA-ring-buffer-size-calculation.patch @@ -0,0 +1,34 @@ +From 063d9dc6dada19d18db2064497675f6f889bbe70 Mon Sep 17 00:00:00 2001 +From: shaoyunl <Shaoyun.Liu@amd.com> +Date: Wed, 1 Nov 2017 19:21:56 -0400 +Subject: [PATCH 3388/4131] drm/amdkfd: Fix SDMA ring buffer size calculation + +ffs function return the position of the first bit set on 1 based. +(bit zero returns 1). + +Signed-off-by: shaoyun liu <shaoyun.liu@amd.com> +Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> +Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> +Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> +--- + drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c +index 4859d26..4728fad 100644 +--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c ++++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c +@@ -202,8 +202,8 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd, + struct cik_sdma_rlc_registers *m; + + m = get_sdma_mqd(mqd); +- m->sdma_rlc_rb_cntl = ffs(q->queue_size / sizeof(unsigned int)) << +- SDMA0_RLC0_RB_CNTL__RB_SIZE__SHIFT | ++ m->sdma_rlc_rb_cntl = (ffs(q->queue_size / sizeof(unsigned int)) - 1) ++ << SDMA0_RLC0_RB_CNTL__RB_SIZE__SHIFT | + q->vmid << SDMA0_RLC0_RB_CNTL__RB_VMID__SHIFT | + 1 << SDMA0_RLC0_RB_CNTL__RPTR_WRITEBACK_ENABLE__SHIFT | + 6 << SDMA0_RLC0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT; +-- +2.7.4 + |