Hi Bart,
On 10/14/15, 4:07 PM, "linux-scsi-ow...@vger.kernel.org on behalf of
Himanshu Madhani" <linux-scsi-ow...@vger.kernel.org on behalf of
himanshu.madh...@qlogic.com> wrote:
>Hi Bart,
>
>> On Oct 14, 2015, at 10:33 AM, Bart Van Assche
>><bart.vanass...@sandisk.com> wrote:
>>
>> On 10/14/2015 08:57 AM, Himanshu Madhani wrote:
>>> This patch fixes rwlock recursion introduced for ISP82XX by
>>> commit 8dfa4b5a ("qla2xxx: Fix sparse annotations")
>>
>> Hello Himanshu,
>>
>> Would it be possible to test whether the (untested) patch below also
>>fixes the observed rwlock recursion ?
>>
>> Thanks,
>>
>> Bart.
>>
>>
>>
>> [PATCH] qla2xxx: Fix rwlock recursion
>>
>> Fixes: 8dfa4b5a9b44 ("qla2xxx: Fix sparse annotation")
>> Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
>> Reported-by: Himanshu Madhani <himanshu.madh...@qlogic.com>
>> Cc: Giridhar Malavali <giridhar.malav...@qlogic.com>
>> ---
>> drivers/scsi/qla2xxx/qla_nx.c | 3 ++-
>> 1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/scsi/qla2xxx/qla_nx.c
>>b/drivers/scsi/qla2xxx/qla_nx.c
>> index eb0cc54..b6b4cfd 100644
>> --- a/drivers/scsi/qla2xxx/qla_nx.c
>> +++ b/drivers/scsi/qla2xxx/qla_nx.c
>> @@ -433,7 +433,7 @@ qla82xx_pci_get_crb_addr_2M(struct qla_hw_data *ha,
>>ulong off_in,
>> if (off_in < QLA82XX_PCI_CRBSPACE)
>> return -1;
>>
>> - *off_out = (void __iomem *)(off_in - QLA82XX_PCI_CRBSPACE);
>> + off_in -= QLA82XX_PCI_CRBSPACE;
>>
>> /* Try direct map */
>> m = &crb_128M_2M_map[CRB_BLK(off_in)].sub_block[CRB_SUBBLK(off_in)];
>> @@ -443,6 +443,7 @@ qla82xx_pci_get_crb_addr_2M(struct qla_hw_data *ha,
>>ulong off_in,
>> return 0;
>> }
>> /* Not in direct map, use crb window */
>> + *off_out = (void __iomem *)off_in;
>> return 1;
>> }
>>
>
>This change also resolved rwlock recursion on the driver load. Will
>perform some more basic sanity and report if there are issues seen.
Testing looks good so far. Please send official patch with this fix.
>
>> --
>> 2.1.4
>>
>>
>
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Thanks,
Himanshu
>
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