linux-kernel - Re: [PATCH] block: fix error handling in sg

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Date:	Tue, 26 Aug 2014 08:17:50 -0600
From:	Jens Axboe <axboe@...nel.dk>
To:	Sabrina Dubroca <sd@...asysnail.net>, hch@....de
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] block: fix error handling in sg_io

On 08/26/2014 08:14 AM, Sabrina Dubroca wrote:
> Before commit 2cada584b200 ("block: cleanup error handling in sg_io"),
> we had ret = 0 before entering the last big if block of sg_io.
> 
> Since 2cada584b200, ret = -EFAULT, which breaks hdparm:
> 
> /dev/sda:
>  setting Advanced Power Management level to 0xc8 (200)
>  HDIO_DRIVE_CMD failed: Bad address
>  APM_level      = 128
> 
> Signed-off-by: Sabrina Dubroca <sd@...asysnail.net>
> Fixes: 2cada584b200 ("block: cleanup error handling in sg_io")

Thanks, good catch. Someone else reported a regression with identical
symptoms to me yesterday, but did not follow up, so I'm glad you both
found and fixed it.


-- 
Jens Axboe

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