| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <2995be5e-88e9-f00d-7bce-2f7c9eb5724d@gmail.com>
Date: Tue, 31 Jan 2023 14:37:34 +0100
From: Matthias Brugger <matthias.bgg@...il.com>
To: Roger Lu <roger.lu@...iatek.com>,
Enric Balletbo Serra <eballetbo@...il.com>,
Kevin Hilman <khilman@...nel.org>,
Nicolas Boichat <drinkcat@...gle.com>
Cc: Fan Chen <fan.chen@...iatek.com>,
Jia-wei Chang <jia-wei.chang@...iatek.com>,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-pm@...r.kernel.org,
Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v4 12/14] soc: mediatek: mtk-svs: use svs get efuse common
function
On 11/01/2023 08:45, Roger Lu wrote:
> SVS might need to read both svs efuse and thermal efuse on the probe flow.
> Therefore, add a common efuse read function to remove the superfluous
> codes.
>
> Signed-off-by: Roger Lu <roger.lu@...iatek.com>
Looks good to me, could you please rebase.
Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
> ---
> drivers/soc/mediatek/mtk-svs.c | 69 ++++++++++++----------------------
> 1 file changed, 24 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
> index bd23d1111d7b..a7f0a6f02d52 100644
> --- a/drivers/soc/mediatek/mtk-svs.c
> +++ b/drivers/soc/mediatek/mtk-svs.c
> @@ -1758,26 +1758,28 @@ static int svs_bank_resource_setup(struct svs_platform *svsp)
> return 0;
> }
>
> -static int svs_thermal_efuse_get_data(struct svs_platform *svsp)
> +static int svs_get_efuse_data(struct svs_platform *svsp,
> + const char *nvmem_cell_name,
> + u32 **svsp_efuse, size_t *svsp_efuse_max)
> {
> struct nvmem_cell *cell;
>
> - /* Thermal efuse parsing */
> - cell = nvmem_cell_get(svsp->dev, "t-calibration-data");
> + cell = nvmem_cell_get(svsp->dev, nvmem_cell_name);
> if (IS_ERR_OR_NULL(cell)) {
> - dev_err(svsp->dev, "no \"t-calibration-data\"? %ld\n", PTR_ERR(cell));
> + dev_err(svsp->dev, "no \"%s\"? %ld\n",
> + nvmem_cell_name, PTR_ERR(cell));
> return PTR_ERR(cell);
> }
>
> - svsp->tefuse = nvmem_cell_read(cell, &svsp->tefuse_max);
> - if (IS_ERR(svsp->tefuse)) {
> - dev_err(svsp->dev, "cannot read thermal efuse: %ld\n",
> - PTR_ERR(svsp->tefuse));
> + *svsp_efuse = nvmem_cell_read(cell, svsp_efuse_max);
> + if (IS_ERR(*svsp_efuse)) {
> + dev_err(svsp->dev, "cannot read \"%s\" efuse: %ld\n",
> + nvmem_cell_name, PTR_ERR(*svsp_efuse));
> nvmem_cell_put(cell);
> - return PTR_ERR(svsp->tefuse);
> + return PTR_ERR(*svsp_efuse);
> }
>
> - svsp->tefuse_max /= sizeof(u32);
> + *svsp_efuse_max /= sizeof(u32);
> nvmem_cell_put(cell);
>
> return 0;
> @@ -1825,7 +1827,8 @@ static bool svs_mt8192_efuse_parsing(struct svs_platform *svsp)
> svsb->vmax += svsb->dvt_fixed;
> }
>
> - ret = svs_thermal_efuse_get_data(svsp);
> + ret = svs_get_efuse_data(svsp, "t-calibration-data",
> + &svsp->tefuse, &svsp->tefuse_max);
> if (ret)
> return false;
>
> @@ -1930,7 +1933,8 @@ static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp)
> }
> }
>
> - ret = svs_thermal_efuse_get_data(svsp);
> + ret = svs_get_efuse_data(svsp, "t-calibration-data",
> + &svsp->tefuse, &svsp->tefuse_max);
> if (ret)
> return false;
>
> @@ -2039,32 +2043,6 @@ static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp)
> return true;
> }
>
> -static bool svs_is_efuse_data_correct(struct svs_platform *svsp)
> -{
> - struct nvmem_cell *cell;
> -
> - /* Get svs efuse by nvmem */
> - cell = nvmem_cell_get(svsp->dev, "svs-calibration-data");
> - if (IS_ERR(cell)) {
> - dev_err(svsp->dev, "no \"svs-calibration-data\"? %ld\n",
> - PTR_ERR(cell));
> - return false;
> - }
> -
> - svsp->efuse = nvmem_cell_read(cell, &svsp->efuse_max);
> - if (IS_ERR(svsp->efuse)) {
> - dev_err(svsp->dev, "cannot read svs efuse: %ld\n",
> - PTR_ERR(svsp->efuse));
> - nvmem_cell_put(cell);
> - return false;
> - }
> -
> - svsp->efuse_max /= sizeof(u32);
> - nvmem_cell_put(cell);
> -
> - return true;
> -}
> -
> static struct device *svs_get_subsys_device(struct svs_platform *svsp,
> const char *node_name)
> {
> @@ -2404,8 +2382,9 @@ static int svs_probe(struct platform_device *pdev)
> if (ret)
> return ret;
>
> - if (!svs_is_efuse_data_correct(svsp)) {
> - dev_notice(svsp->dev, "efuse data isn't correct\n");
> + ret = svs_get_efuse_data(svsp, "svs-calibration-data",
> + &svsp->efuse, &svsp->efuse_max);
> + if (ret) {
> ret = -EPERM;
> goto svs_probe_free_efuse;
> }
> @@ -2413,13 +2392,13 @@ static int svs_probe(struct platform_device *pdev)
> if (!svsp_data->efuse_parsing(svsp)) {
> dev_err(svsp->dev, "efuse data parsing failed\n");
> ret = -EPERM;
> - goto svs_probe_free_resource;
> + goto svs_probe_free_tefuse;
> }
>
> ret = svs_bank_resource_setup(svsp);
> if (ret) {
> dev_err(svsp->dev, "svs bank resource setup fail: %d\n", ret);
> - goto svs_probe_free_resource;
> + goto svs_probe_free_tefuse;
> }
>
> svsp->main_clk = devm_clk_get(svsp->dev, "main");
> @@ -2427,12 +2406,12 @@ static int svs_probe(struct platform_device *pdev)
> dev_err(svsp->dev, "failed to get clock: %ld\n",
> PTR_ERR(svsp->main_clk));
> ret = PTR_ERR(svsp->main_clk);
> - goto svs_probe_free_resource;
> + goto svs_probe_free_tefuse;
> }
>
> ret = svs_clk_enable(svsp);
> if (ret)
> - goto svs_probe_free_resource;
> + goto svs_probe_free_tefuse;
>
> svsp->base = of_iomap(svsp->dev->of_node, 0);
> if (IS_ERR_OR_NULL(svsp->base)) {
> @@ -2477,7 +2456,7 @@ static int svs_probe(struct platform_device *pdev)
> svs_probe_clk_disable:
> svs_clk_disable(svsp);
>
> -svs_probe_free_resource:
> +svs_probe_free_tefuse:
> if (!IS_ERR_OR_NULL(svsp->tefuse))
> kfree(svsp->tefuse);
>
Powered by blists - more mailing lists