linux-kernel - Re: [PATCH v2] mfd: cros_ec_dev: Return number of bytes read with CROS_EC_DEV

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Thu, 7 Feb 2019 10:36:29 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     linux-kernel@...r.kernel.org, groeck@...omium.org,
        gwendal@...omium.org, kernel@...labora.com, bleung@...omium.org,
        Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH v2] mfd: cros_ec_dev: Return number of bytes read with
 CROS_EC_DEV_IOCRDMEM

On Wed, 06 Feb 2019, Enric Balletbo i Serra wrote:

> From: Guenter Roeck <linux@...ck-us.net>
> 
> While ioctls normally return a negative error or 0 on success, this is not
> the case for CROS_EC_DEV_IOCXCMD in the cros_ec driver, which returns the
> number of bytes read instead. However, CROS_EC_DEV_IOCRDMEM in the same
> driver does not return the number of byte read on success. This is both
> inconsistent and problematic, since the amount of returned data can be
> dynamic. Have it return the number of data bytes for consistency.
> 
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> ---
> Hi,
> 
> This patch was send long time ago and never landed to mainline [1]. This
> is a second attempt. Originally was made to apply on platform/chrome but
> after the recent changes we did it should go now throught the MFD
> subsystem. Without this patch userspace tools like ectool doesn't work
> as expected.
> 
> Best regards,
>  Enric
> 
> [1] https://lore.kernel.org/patchwork/patch/665211/
> 
> Changes in v2:
> - Adapt and rebase to current mainline.

Applied, thanks.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog