linux-kernel - Re: [PATCH] scsi: aacraid: avoid open-coded upper_32

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Date:   Tue, 7 Feb 2017 14:05:29 +0100
From:   Johannes Thumshirn <jthumshirn@...e.de>
To:     Arnd Bergmann <arnd@...db.de>,
        Adaptec OEM Raid Solutions <aacraid@...rosemi.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Raghava Aditya Renukunta <RaghavaAditya.Renukunta@...rosemi.com>,
        Dave Carroll <David.Carroll@...rosemi.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: aacraid: avoid open-coded upper_32_bits

On 02/07/2017 01:59 PM, Arnd Bergmann wrote:
> Shifting a dma_addr_t right by 32 bits causes a compile-time warning when
> that type is only 32 bit wide:
> 
> drivers/scsi/aacraid/src.c: In function 'aac_src_start_adapter':
> drivers/scsi/aacraid/src.c:414:29: error: right shift count >= width of type [-Werror=shift-count-overflow]
> 
> This changes the driver to use the predefined macros consistently, including
> one correct but open-coded upper_32_bits() instance.
> 
> Fixes: d1ef4da8487f ("scsi: aacraid: added support for init_struct_8")
> Fixes: 423400e64d37 ("scsi: aacraid: Include HBA direct interface")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---

The coolest thing with your patches is, one gets to know new cool
functions/macros.

Anyways looks good,
Reviewed-by: Johannes Thumshirn <jthumshirn@...e.de>


-- 
Johannes Thumshirn                                          Storage
jthumshirn@...e.de                                +49 911 74053 689
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