linux-kernel - Re: [PATCH v3 20/20] checkpatch: warn for use of old PCI pool API

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Date:   Mon, 27 Feb 2017 13:26:21 +0100
From:   Romain Perier <romain.perier@...labora.com>
To:     Peter Senna Tschudin <peter.senna@...labora.com>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Doug Ledford <dledford@...hat.com>,
        Sean Hefty <sean.hefty@...el.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        jeffrey.t.kirsher@...el.com,
        "David S. Miller" <davem@...emloft.net>, stas.yakovlev@...il.com,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Peter Senna Tschudin <peter.senna@...labora.co.uk>,
        Joe Perches <joe@...ches.com>
Subject: Re: [PATCH v3 20/20] checkpatch: warn for use of old PCI pool API

Hello,


Le 27/02/2017 à 12:22, Peter Senna Tschudin a écrit :
> On Sun, Feb 26, 2017 at 08:24:25PM +0100, Romain Perier wrote:
>> pci_pool_*() functions should be replaced by the corresponding functions
>> in the DMA pool API. This adds support to check for use of these pci
>> functions and display a warning when it is the case.
>>
> I guess Joe Perches did sent some comments for this one, did you address
> them?

See the changelog of 00/20 (for v2). I have already integrated his
comments :)

>
> Reviewed-by: Peter Senna Tschudin <peter.senna@...labora.com>
>> Signed-off-by: Romain Perier <romain.perier@...labora.com>
>> ---
>>  scripts/checkpatch.pl | 9 ++++++++-
>>  1 file changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
>> index baa3c7b..f2c775c 100755
>> --- a/scripts/checkpatch.pl
>> +++ b/scripts/checkpatch.pl
>> @@ -6064,7 +6064,14 @@ sub process {
>>  			WARN("USE_DEVICE_INITCALL",
>>  			     "please use device_initcall() or more appropriate function instead of __initcall() (see include/linux/init.h)\n" . $herecurr);
>>  		}
>> -
>> +# check for old PCI api pci_pool_*(), use dma_pool_*() instead
>> +		if ($line =~ /\bpci_pool(?:_(?:create|destroy|alloc|zalloc|free)|)\b/) {
>> +			if (WARN("USE_DMA_POOL",
>> +				 "please use the dma pool api or more appropriate function instead of the old pci pool api\n" . $herecurr) &&
>> +			    $fix) {
>> +				while ($fixed[$fixlinenr] =~ s/\bpci_pool(_(?:create|destroy|alloc|zalloc|free)|)\b/dma_pool$1/) {}
>> +			}
>> +		}
>>  # check for various structs that are normally const (ops, kgdb, device_tree)
>>  		if ($line !~ /\bconst\b/ &&
>>  		    $line =~ /\bstruct\s+($const_structs)\b/) {
>> -- 
>> 2.9.3
>>