From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Alex Deucher <alexander.deucher@amd.com>,
yu kuai <yukuai3@huawei.com>,
dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.14 049/186] drm/amdgpu: remove always false comparison in 'amdgpu_atombios_i2c_process_i2c_ch'
Date: Fri, 14 Feb 2020 11:14:58 -0500 [thread overview]
Message-ID: <20200214161715.18113-49-sashal@kernel.org> (raw)
In-Reply-To: <20200214161715.18113-1-sashal@kernel.org>
From: yu kuai <yukuai3@huawei.com>
[ Upstream commit 220ac8d1444054ade07ce14498fcda266410f90e ]
Fixes gcc '-Wtype-limits' warning:
drivers/gpu/drm/amd/amdgpu/atombios_i2c.c: In function
‘amdgpu_atombios_i2c_process_i2c_ch’:
drivers/gpu/drm/amd/amdgpu/atombios_i2c.c:79:11: warning: comparison is
always false due to limited range of data type [-Wtype-limits]
'num' is 'u8', so it will never be greater than 'TOM_MAX_HW_I2C_READ',
which is defined as 255. Therefore, the comparison can be removed.
Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)")
Signed-off-by: yu kuai <yukuai3@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/atombios_i2c.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c
index b374653bd6cf3..741bd1e52699b 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c
@@ -69,11 +69,6 @@ static int amdgpu_atombios_i2c_process_i2c_ch(struct amdgpu_i2c_chan *chan,
memcpy(&out, &buf[1], num);
args.lpI2CDataOut = cpu_to_le16(out);
} else {
- if (num > ATOM_MAX_HW_I2C_READ) {
- DRM_ERROR("hw i2c: tried to read too many bytes (%d vs 255)\n", num);
- r = -EINVAL;
- goto done;
- }
args.ucRegIndex = 0;
args.lpI2CDataOut = 0;
}
--
2.20.1
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next prev parent reply other threads:[~2020-02-14 16:18 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-14 16:14 [PATCH AUTOSEL 4.14 001/186] drm/amdgpu: remove set but not used variable 'mc_shared_chmap' from 'gfx_v6_0.c' and 'gfx_v7_0.c' Sasha Levin
2020-02-14 16:14 ` [PATCH AUTOSEL 4.14 002/186] drm/gma500: Fixup fbdev stolen size usage evaluation Sasha Levin
2020-02-14 16:14 ` [PATCH AUTOSEL 4.14 014/186] pxa168fb: Fix the function used to release some memory in an error handling path Sasha Levin
2020-02-14 16:14 ` [PATCH AUTOSEL 4.14 046/186] drm/amdgpu: remove 4 set but not used variable in amdgpu_atombios_get_connector_info_from_object_table Sasha Levin
2020-02-14 16:14 ` [PATCH AUTOSEL 4.14 047/186] drm/amdgpu: remove set but not used variable 'dig_connector' Sasha Levin
2020-02-14 16:14 ` [PATCH AUTOSEL 4.14 048/186] drm/amdgpu: remove set but not used variable 'dig' Sasha Levin
2020-02-14 16:14 ` Sasha Levin [this message]
2020-02-14 16:14 ` [PATCH AUTOSEL 4.14 050/186] drm/amdgpu: remove set but not used variable 'mc_shared_chmap' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 051/186] drm/amdgpu: remove set but not used variable 'amdgpu_connector' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 052/186] drm/gma500: remove set but not used variable 'htotal' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 053/186] drm/gma500: remove set but not used variable 'error' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 054/186] drm/gma500: remove set but not used variable 'is_hdmi', 'is_crt' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 055/186] drm/gma500: remove set but not used variable 'channel_eq' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 056/186] drm/radeon: remove set but not used variable 'size', 'relocs_chunk' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 057/186] drm/radeon: remove set but not used variable 'backbias_response_time' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 058/186] drm/radeon: remove set but not used variable 'dig_connector' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 059/186] drm/radeon: remove set but not used variable 'radeon_connector' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 060/186] drm/radeon: remove set but not used variable 'blocks' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 061/186] drm/radeon: remove set but not used variable 'tv_pll_cntl1' Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 087/186] drm/mediatek: handle events when enabling/disabling crtc Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 102/186] drm: remove the newline for CRC source name Sasha Levin
2020-02-14 16:15 ` [PATCH AUTOSEL 4.14 103/186] drm/gma500: remove set but not used variables 'hist_reg' Sasha Levin
2020-02-14 16:16 ` [PATCH AUTOSEL 4.14 125/186] drm/nouveau/secboot/gm20b: initialize pointer in gm20b_secboot_new() Sasha Levin
2020-02-14 16:16 ` [PATCH AUTOSEL 4.14 126/186] drm/nouveau/gr/gk20a, gm200-: add terminators to method lists read from fw Sasha Levin
2020-02-14 16:16 ` [PATCH AUTOSEL 4.14 127/186] drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler Sasha Levin
2020-02-14 16:16 ` [PATCH AUTOSEL 4.14 128/186] drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add Sasha Levin
2020-02-14 16:16 ` [PATCH AUTOSEL 4.14 170/186] drm/nouveau/disp/nv50-: prevent oops when no channel method map provided Sasha Levin
2020-02-14 16:17 ` [PATCH AUTOSEL 4.14 174/186] radeon: insert 10ms sleep in dce5_crtc_load_lut Sasha Levin
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