qlcnic: Fix CPU soft lockup while collecting firmware dump
[ Upstream commit 22e984493a
]
Driver while collecting firmware dump takes longer time to
collect/process some of the firmware dump entries/memories.
Bigger capture masks makes it worse as it results in larger
amount of data being collected and results in CPU soft lockup.
Place cond_resched() in some of the driver flows that are
expectedly time consuming to relinquish the CPU to avoid CPU
soft lockup panic.
Signed-off-by: Shahed Shaikh <shshaikh@marvell.com>
Tested-by: Yonggen Xu <Yonggen.Xu@dell.com>
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
parent
d693255105
commit
6ee3feac65
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@ -2043,6 +2043,7 @@ static void qlcnic_83xx_exec_template_cmd(struct qlcnic_adapter *p_dev,
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break;
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}
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entry += p_hdr->size;
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cond_resched();
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}
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p_dev->ahw->reset.seq_index = index;
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}
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@ -703,6 +703,7 @@ static u32 qlcnic_read_memory_test_agent(struct qlcnic_adapter *adapter,
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addr += 16;
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reg_read -= 16;
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ret += 16;
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cond_resched();
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}
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out:
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mutex_unlock(&adapter->ahw->mem_lock);
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@ -1383,6 +1384,7 @@ int qlcnic_dump_fw(struct qlcnic_adapter *adapter)
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buf_offset += entry->hdr.cap_size;
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entry_offset += entry->hdr.offset;
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buffer = fw_dump->data + buf_offset;
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cond_resched();
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}
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fw_dump->clr = 1;
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