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Kernel: Convert rw_dma_page to NonnullRefPtr in NVMeQueue

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Propagate error if the rw_dma_page is NULL in try_create and use
relase_nonnull to convert RefPtr to NonnullRefPtr before passing it to
the NVMeQueue.
This commit is contained in:
Pankaj Raghav 2023-05-18 12:11:39 +02:00 • committed by Andrew Kaster
parent 4014b06b08
commit b8c03d44a7
5 changed files with 11 additions and 6 deletions
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9
Kernel/Storage/NVMe/NVMeQueue.cpp
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@ -17,11 +17,16 @@ ErrorOr<NonnullLockRefPtr<NVMeQueue>> NVMeQueue::try_create(NVMeController& devi
// Note: Allocate DMA region for RW operation. For now the requests don't exceed more than 4096 bytes (Storage device takes care of it)
RefPtr<Memory::PhysicalPage> rw_dma_page;
auto rw_dma_region = TRY(MM.allocate_dma_buffer_page("NVMe Queue Read/Write DMA"sv, Memory::Region::Access::ReadWrite, rw_dma_page));
if (rw_dma_page.is_null())
return ENOMEM;
if (queue_type == QueueType::Polled) {
auto queue = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) NVMePollQueue(move(rw_dma_region), *rw_dma_page, qid, q_depth, move(cq_dma_region), move(sq_dma_region), move(db_regs))));
auto queue = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) NVMePollQueue(move(rw_dma_region), rw_dma_page.release_nonnull(), qid, q_depth, move(cq_dma_region), move(sq_dma_region), move(db_regs))));
return queue;
}
auto queue = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) NVMeInterruptQueue(device, move(rw_dma_region), *rw_dma_page, qid, irq, q_depth, move(cq_dma_region), move(sq_dma_region), move(db_regs))));
auto queue = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) NVMeInterruptQueue(device, move(rw_dma_region), rw_dma_page.release_nonnull(), qid, irq, q_depth, move(cq_dma_region), move(sq_dma_region), move(db_regs))));
return queue;
}