Re: [PATCH] PCI: mobiveil: integer overflow in IB_WIN_SIZE

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Lorenzo,
Added the compilation support in the next patch submitted at :
https://patchwork.kernel.org/patch/10551771/

please review.

Thanks,
Subrahmanya


On Thu, Jul 26, 2018 at 4:26 PM, Lorenzo Pieralisi
<lorenzo.pieralisi@xxxxxxx> wrote:
> On Thu, Jul 05, 2018 at 12:45:39PM +0300, Dan Carpenter wrote:
>> IB_WIN_SIZE is larger than INT_MAX so we need to cast it to u64.
>>
>> Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver")
>> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>> ---
>> Untested...  Possibly the problem is that there are too many multiplies
>> by * 1024.
>>
>> diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
>
> Applied to pci/mobiveil for v4.19 (it is still not fixing anything
> given that the driver lacks a Kconfig and Makefile entries - that
> must be fixed with urgency), thanks.
>
> Lorenzo
>
>> index 4d6c20e47bed..cf0aa7cee5b0 100644
>> --- a/drivers/pci/controller/pcie-mobiveil.c
>> +++ b/drivers/pci/controller/pcie-mobiveil.c
>> @@ -107,7 +107,7 @@
>>  #define CFG_WINDOW_TYPE      0
>>  #define IO_WINDOW_TYPE               1
>>  #define MEM_WINDOW_TYPE      2
>> -#define IB_WIN_SIZE          (256 * 1024 * 1024 * 1024)
>> +#define IB_WIN_SIZE          ((u64)256 * 1024 * 1024 * 1024)
>>  #define MAX_PIO_WINDOWS      8
>>
>>  /* Parameters for the waiting for link up routine */
--
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