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| author |   Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2023-06-04 14:44:46 +0900 |
|---|---|---|
| committer | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2023-06-06 07:54:23 +0900 |
| commit | 8320442b264a8d49b08f2730d63a39b2e0c146f8 (patch) | |
| tree | e81656e3cde7df5f46c4ee16c5a51bb557289376 /drivers/firewire | |
| parent | firewire: ohci: use devres for MMIO region mapping (diff) | |
| download | wireguard-linux-8320442b264a8d49b08f2730d63a39b2e0c146f8.tar.xz wireguard-linux-8320442b264a8d49b08f2730d63a39b2e0c146f8.zip | |
firewire: ohci: use devres for misc DMA buffer
The 1394 OHCI driver allocates a DMA coherent buffer for multi-purposes.
The buffer is split into three region for specific purposes; i.e. 1/4 for
context descriptors of AR request and response as well as 1/2 for self
ID handling.
This commit uses managed device resource to maintain the lifetime of
buffer.
Link: https://lore.kernel.org/r/20230604054451.161076-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/ohci.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 26c64b60144d..3b31d90781fe 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -3634,17 +3634,15 @@ static int pci_probe(struct pci_dev *dev, */ BUILD_BUG_ON(AR_BUFFERS * sizeof(struct descriptor) > PAGE_SIZE/4); BUILD_BUG_ON(SELF_ID_BUF_SIZE > PAGE_SIZE/2); - ohci->misc_buffer = dma_alloc_coherent(ohci->card.device, - PAGE_SIZE, - &ohci->misc_buffer_bus, - GFP_KERNEL); + ohci->misc_buffer = dmam_alloc_coherent(&dev->dev, PAGE_SIZE, &ohci->misc_buffer_bus, + GFP_KERNEL); if (!ohci->misc_buffer) return -ENOMEM; err = ar_context_init(&ohci->ar_request_ctx, ohci, 0, OHCI1394_AsReqRcvContextControlSet); if (err < 0) - goto fail_misc_buf; + return err; err = ar_context_init(&ohci->ar_response_ctx, ohci, PAGE_SIZE/4, OHCI1394_AsRspRcvContextControlSet); @@ -3736,9 +3734,6 @@ static int pci_probe(struct pci_dev *dev, ar_context_release(&ohci->ar_response_ctx); fail_arreq_ctx: ar_context_release(&ohci->ar_request_ctx); - fail_misc_buf: - dma_free_coherent(ohci->card.device, PAGE_SIZE, - ohci->misc_buffer, ohci->misc_buffer_bus); return err; } @@ -3774,8 +3769,6 @@ static void pci_remove(struct pci_dev *dev) ohci->config_rom, ohci->config_rom_bus); ar_context_release(&ohci->ar_request_ctx); ar_context_release(&ohci->ar_response_ctx); - dma_free_coherent(ohci->card.device, PAGE_SIZE, - ohci->misc_buffer, ohci->misc_buffer_bus); context_release(&ohci->at_request_ctx); context_release(&ohci->at_response_ctx); kfree(ohci->it_context_list); |