linux-kernel - Re: [PATCH] [libata] Fix HDIO_DRIVE

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Message-ID: <CAMHSBOXOrxihwBNuA=uN+SKifzZx8UR40=gNnxbkRpk92FQjKg@mail.gmail.com>
Date:	Fri, 29 Mar 2013 10:06:15 -0700
From:	Gwendal Grignou <gwendal@...gle.com>
To:	Krzysztof Mazur <krzysiek@...lesie.net>
Cc:	ronald645@...il.com,
	"IDE/ATA development list" <linux-ide@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [libata] Fix HDIO_DRIVE_CMD ioctl sense data check

Yours work.

On Fri, Mar 29, 2013 at 9:10 AM, Krzysztof Mazur <krzysiek@...lesie.net> wrote:
> On Fri, Mar 29, 2013 at 08:26:41AM -0700, Gwendal Grignou wrote:
>> commit 84a9a8cd9d0aa93c17e5815ab8a9cc4c0a765c63 changed the sense key
>> used for returning task registers, but HDIO_DRIVE_CMD ioctl was
>> not changed accordingly.
>>
>> Tested: check that SMART ENABLE sent using HDIO_DRIVE_CMD returns 0
>> instead of EIO.
>>
>> Signed-off-by: Gwendal Grignou <gwendal@...gle.com>
>> ---
>>  drivers/ata/libata-scsi.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
>> index 318b413..e05bf4c 100644
>> --- a/drivers/ata/libata-scsi.c
>> +++ b/drivers/ata/libata-scsi.c
>> @@ -532,8 +532,8 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
>>                       struct scsi_sense_hdr sshdr;
>>                       scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
>>                                            &sshdr);
>> -                     if (sshdr.sense_key == 0 &&
>> -                         sshdr.asc == 0 && sshdr.ascq == 0)
>> +                     if (sshdr.sense_key == RECOVERED_ERROR &&
>> +                         sshdr.asc == 0 && sshdr.ascq == 0x1D)
>>                               cmd_result &= ~SAM_STAT_CHECK_CONDITION;
>>               }
>>
>> --
>> 1.8.1.3
>
> I did not test your patch, but I think that you missed the second
> test in ata_task_ioctl() and the kernel will still return -EIO
> in case of HDIO_DRIVE_TASK (0x31e) ioctl.
> See http://marc.info/?l=linux-kernel&m=136438868606981&w=2.
> The version I've sent fixes the problem for me.
>
> Krzysiek
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