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From:   Vijendar Mukunda <Vijendar.Mukunda@amd.com>
To:     <dri-devel@lists.freedesktop.org>, <amd-gfx@lists.freedesktop.org>
CC:     <Alexander.Deucher@amd.com>, <Sunil-kumar.Dommati@amd.com>,
        <dan.carpenter@oracle.com>,
        Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>,
        "Pan, Xinhui" <Xinhui.Pan@amd.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        open list <linux-kernel@vger.kernel.org>
Subject: [PATCH] drm/amdgpu: fix i2s_pdata out of bound array access
Date:   Wed, 27 Jul 2022 20:12:48 +0530
Message-ID: <20220727144249.415228-1-Vijendar.Mukunda@amd.com>
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Fixed following Smatch static checker warning:

    drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c:393 acp_hw_init()
    error: buffer overflow 'i2s_pdata' 3 <= 3
    drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c:396 acp_hw_init()
    error: buffer overflow 'i2s_pdata' 3 <= 3

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index bcc7ee02e0fc..6d72355ac492 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -390,14 +390,6 @@ static int acp_hw_init(void *handle)
 		i2s_pdata[2].i2s_reg_comp1 = ACP_BT_COMP1_REG_OFFSET;
 		i2s_pdata[2].i2s_reg_comp2 = ACP_BT_COMP2_REG_OFFSET;
 
-		i2s_pdata[3].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
-		switch (adev->asic_type) {
-		case CHIP_STONEY:
-			i2s_pdata[3].quirks |= DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
-			break;
-		default:
-			break;
-		}
 		adev->acp.acp_res[0].name = "acp2x_dma";
 		adev->acp.acp_res[0].flags = IORESOURCE_MEM;
 		adev->acp.acp_res[0].start = acp_base;
-- 
2.25.1