From: Matthias Brugger <matthias.bgg@gmail.com>
To: Guillaume Ranquet <granquet@baylibre.com>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Vinod Koul <vkoul@kernel.org>,
Kishon Vijay Abraham I <kishon@kernel.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH v2 1/2] phy: mediatek: hdmi: mt8195: fix uninitialized variable usage in pll_calc
Date: Fri, 14 Apr 2023 18:44:30 +0200 [thread overview]
Message-ID: <8e40e46a-edf4-96c5-7248-21f39a93a410@gmail.com> (raw)
In-Reply-To: <20230413-fixes-for-mt8195-hdmi-phy-v2-1-bbad62e64321@baylibre.com>
On 14/04/2023 18:07, Guillaume Ranquet wrote:
> The ret variable in mtk_hdmi_pll_calc() was used unitialized as reported
> by the kernel test robot.
>
> Fix the issue by removing the variable altogether and testing out the
> return value of mtk_hdmi_pll_set_hw()
>
> Fixes: 45810d486bb44 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Looks good, but got unfortunately already fixed 4 hours ago with
20230414122253.3171524-1-trix@redhat.com
:)
Regards,
Matthias
> ---
> drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> index abfc077fb0a8..054b73cb31ee 100644
> --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> @@ -213,7 +213,7 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> u64 tmds_clk, pixel_clk, da_hdmitx21_ref_ck, ns_hdmipll_ck, pcw;
> u8 txpredivs[4] = { 2, 4, 6, 12 };
> u32 fbkdiv_low;
> - int i, ret;
> + int i;
>
> pixel_clk = rate;
> tmds_clk = pixel_clk;
> @@ -292,13 +292,9 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> if (!(digital_div <= 32 && digital_div >= 1))
> return -EINVAL;
>
> - mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> + return mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> PLL_FBKDIV_HS3, posdiv1, posdiv2, txprediv,
> txposdiv, digital_div);
> - if (ret)
> - return -EINVAL;
> -
> - return 0;
> }
>
> static int mtk_hdmi_pll_drv_setting(struct clk_hw *hw)
>
WARNING: multiple messages have this Message-ID (diff)
From: Matthias Brugger <matthias.bgg@gmail.com>
To: Guillaume Ranquet <granquet@baylibre.com>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Vinod Koul <vkoul@kernel.org>,
Kishon Vijay Abraham I <kishon@kernel.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: kernel test robot <lkp@intel.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org,
linux-phy@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/2] phy: mediatek: hdmi: mt8195: fix uninitialized variable usage in pll_calc
Date: Fri, 14 Apr 2023 18:44:30 +0200 [thread overview]
Message-ID: <8e40e46a-edf4-96c5-7248-21f39a93a410@gmail.com> (raw)
In-Reply-To: <20230413-fixes-for-mt8195-hdmi-phy-v2-1-bbad62e64321@baylibre.com>
On 14/04/2023 18:07, Guillaume Ranquet wrote:
> The ret variable in mtk_hdmi_pll_calc() was used unitialized as reported
> by the kernel test robot.
>
> Fix the issue by removing the variable altogether and testing out the
> return value of mtk_hdmi_pll_set_hw()
>
> Fixes: 45810d486bb44 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Looks good, but got unfortunately already fixed 4 hours ago with
20230414122253.3171524-1-trix@redhat.com
:)
Regards,
Matthias
> ---
> drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> index abfc077fb0a8..054b73cb31ee 100644
> --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> @@ -213,7 +213,7 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> u64 tmds_clk, pixel_clk, da_hdmitx21_ref_ck, ns_hdmipll_ck, pcw;
> u8 txpredivs[4] = { 2, 4, 6, 12 };
> u32 fbkdiv_low;
> - int i, ret;
> + int i;
>
> pixel_clk = rate;
> tmds_clk = pixel_clk;
> @@ -292,13 +292,9 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> if (!(digital_div <= 32 && digital_div >= 1))
> return -EINVAL;
>
> - mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> + return mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> PLL_FBKDIV_HS3, posdiv1, posdiv2, txprediv,
> txposdiv, digital_div);
> - if (ret)
> - return -EINVAL;
> -
> - return 0;
> }
>
> static int mtk_hdmi_pll_drv_setting(struct clk_hw *hw)
>
WARNING: multiple messages have this Message-ID (diff)
From: Matthias Brugger <matthias.bgg@gmail.com>
To: Guillaume Ranquet <granquet@baylibre.com>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Vinod Koul <vkoul@kernel.org>,
Kishon Vijay Abraham I <kishon@kernel.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH v2 1/2] phy: mediatek: hdmi: mt8195: fix uninitialized variable usage in pll_calc
Date: Fri, 14 Apr 2023 18:44:30 +0200 [thread overview]
Message-ID: <8e40e46a-edf4-96c5-7248-21f39a93a410@gmail.com> (raw)
In-Reply-To: <20230413-fixes-for-mt8195-hdmi-phy-v2-1-bbad62e64321@baylibre.com>
On 14/04/2023 18:07, Guillaume Ranquet wrote:
> The ret variable in mtk_hdmi_pll_calc() was used unitialized as reported
> by the kernel test robot.
>
> Fix the issue by removing the variable altogether and testing out the
> return value of mtk_hdmi_pll_set_hw()
>
> Fixes: 45810d486bb44 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Looks good, but got unfortunately already fixed 4 hours ago with
20230414122253.3171524-1-trix@redhat.com
:)
Regards,
Matthias
> ---
> drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> index abfc077fb0a8..054b73cb31ee 100644
> --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> @@ -213,7 +213,7 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> u64 tmds_clk, pixel_clk, da_hdmitx21_ref_ck, ns_hdmipll_ck, pcw;
> u8 txpredivs[4] = { 2, 4, 6, 12 };
> u32 fbkdiv_low;
> - int i, ret;
> + int i;
>
> pixel_clk = rate;
> tmds_clk = pixel_clk;
> @@ -292,13 +292,9 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> if (!(digital_div <= 32 && digital_div >= 1))
> return -EINVAL;
>
> - mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> + return mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> PLL_FBKDIV_HS3, posdiv1, posdiv2, txprediv,
> txposdiv, digital_div);
> - if (ret)
> - return -EINVAL;
> -
> - return 0;
> }
>
> static int mtk_hdmi_pll_drv_setting(struct clk_hw *hw)
>
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
WARNING: multiple messages have this Message-ID (diff)
From: Matthias Brugger <matthias.bgg@gmail.com>
To: Guillaume Ranquet <granquet@baylibre.com>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Vinod Koul <vkoul@kernel.org>,
Kishon Vijay Abraham I <kishon@kernel.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: dri-devel@lists.freedesktop.org,
linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH v2 1/2] phy: mediatek: hdmi: mt8195: fix uninitialized variable usage in pll_calc
Date: Fri, 14 Apr 2023 18:44:30 +0200 [thread overview]
Message-ID: <8e40e46a-edf4-96c5-7248-21f39a93a410@gmail.com> (raw)
In-Reply-To: <20230413-fixes-for-mt8195-hdmi-phy-v2-1-bbad62e64321@baylibre.com>
On 14/04/2023 18:07, Guillaume Ranquet wrote:
> The ret variable in mtk_hdmi_pll_calc() was used unitialized as reported
> by the kernel test robot.
>
> Fix the issue by removing the variable altogether and testing out the
> return value of mtk_hdmi_pll_set_hw()
>
> Fixes: 45810d486bb44 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Looks good, but got unfortunately already fixed 4 hours ago with
20230414122253.3171524-1-trix@redhat.com
:)
Regards,
Matthias
> ---
> drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> index abfc077fb0a8..054b73cb31ee 100644
> --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> @@ -213,7 +213,7 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> u64 tmds_clk, pixel_clk, da_hdmitx21_ref_ck, ns_hdmipll_ck, pcw;
> u8 txpredivs[4] = { 2, 4, 6, 12 };
> u32 fbkdiv_low;
> - int i, ret;
> + int i;
>
> pixel_clk = rate;
> tmds_clk = pixel_clk;
> @@ -292,13 +292,9 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
> if (!(digital_div <= 32 && digital_div >= 1))
> return -EINVAL;
>
> - mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> + return mtk_hdmi_pll_set_hw(hw, PLL_PREDIV, fbkdiv_high, fbkdiv_low,
> PLL_FBKDIV_HS3, posdiv1, posdiv2, txprediv,
> txposdiv, digital_div);
> - if (ret)
> - return -EINVAL;
> -
> - return 0;
> }
>
> static int mtk_hdmi_pll_drv_setting(struct clk_hw *hw)
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-04-14 16:44 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-14 16:07 [PATCH v2 0/2] Fix mtk-hdmi-mt8195 unitialized variable usage and clock rate calculation Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:07 ` [PATCH v2 1/2] phy: mediatek: hdmi: mt8195: fix uninitialized variable usage in pll_calc Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:44 ` Matthias Brugger [this message]
2023-04-14 16:44 ` Matthias Brugger
2023-04-14 16:44 ` Matthias Brugger
2023-04-14 16:44 ` Matthias Brugger
2023-04-17 7:39 ` AngeloGioacchino Del Regno
2023-04-17 7:39 ` AngeloGioacchino Del Regno
2023-04-17 7:39 ` AngeloGioacchino Del Regno
2023-04-17 7:39 ` AngeloGioacchino Del Regno
2023-04-21 22:13 ` Nathan Chancellor
2023-04-21 22:13 ` Nathan Chancellor
2023-04-21 22:13 ` Nathan Chancellor
2023-04-21 22:13 ` Nathan Chancellor
2023-04-24 20:42 ` Nick Desaulniers
2023-04-24 20:42 ` Nick Desaulniers
2023-04-24 20:42 ` Nick Desaulniers
2023-04-24 20:42 ` Nick Desaulniers
2023-04-14 16:07 ` [PATCH v2 2/2] phy: mediatek: hdmi: mt8195: fix wrong pll calculus Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
2023-04-14 16:07 ` Guillaume Ranquet
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