linux-kernel - Re: [PATCH] acpi/nfit: Fix bus command validation

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Message-ID: <df5958d2e4f94e1a898d53761ac13dc543a8b577.camel@intel.com>
Date:   Fri, 8 Feb 2019 00:41:09 +0000
From:   "Verma, Vishal L" <vishal.l.verma@...el.com>
To:     "Williams, Dan J" <dan.j.williams@...el.com>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "Burzynski, Grzegorz" <grzegorz.burzynski@...el.com>,
        "Verma, Vishal" <vishal.verma@...el.com>
Subject: Re: [PATCH] acpi/nfit: Fix bus command validation


On Thu, 2019-02-07 at 15:57 -0800, Dan Williams wrote:
> Commit 11189c1089da "acpi/nfit: Fix command-supported detection" broke
> ND_CMD_CALL for bus-level commands. The "func = cmd" assumption is only
> valid for:
> 
>     ND_CMD_ARS_CAP
>     ND_CMD_ARS_START
>     ND_CMD_ARS_STATUS
>     ND_CMD_CLEAR_ERROR
> 
> The function number otherwise needs to be pulled from the command
> payload for:
> 
>     NFIT_CMD_TRANSLATE_SPA
>     NFIT_CMD_ARS_INJECT_SET
>     NFIT_CMD_ARS_INJECT_CLEAR
>     NFIT_CMD_ARS_INJECT_GET
> 
> Update cmd_to_func() for the bus case and call it in the common path.
> 
> Fixes: 11189c1089da ("acpi/nfit: Fix command-supported detection")
> Cc: <stable@...r.kernel.org>
> Cc: Vishal Verma <vishal.verma@...el.com>
> Reported-by: Grzegorz Burzynski <grzegorz.burzynski@...el.com>
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>
> ---
>  drivers/acpi/nfit/core.c |   22 ++++++++++++----------
>  1 file changed, 12 insertions(+), 10 deletions(-)

Looks good,
Reviewed-by: Vishal Verma <vishal.l.verma@...el.com>