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

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Date:   Tue, 07 Feb 2017 17:25:51 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Adaptec OEM Raid Solutions <aacraid@...rosemi.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        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

>>>>> "Arnd" == Arnd Bergmann <arnd@...db.de> writes:

Arnd> Shifting a dma_addr_t right by 32 bits causes a compile-time
Arnd> warning when that type is only 32 bit wide:

Arnd> drivers/scsi/aacraid/src.c: In function 'aac_src_start_adapter':
Arnd> drivers/scsi/aacraid/src.c:414:29: error: right shift count >=
Arnd> width of type [-Werror=shift-count-overflow]

Arnd> This changes the driver to use the predefined macros consistently,
Arnd> including one correct but open-coded upper_32_bits() instance.

Applied to 4.11/scsi-queue.

-- 
Martin K. Petersen	Oracle Linux Engineering