From: Michael Kelley <mikelley@microsoft.com>
To: sthemmin@microsoft.com, kys@microsoft.com,
haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
rafael@kernel.org, lenb@kernel.org, lorenzo.pieralisi@arm.com,
robh@kernel.org, kw@linux.com, bhelgass@google.com, hch@lst.de,
m.szyprowski@samsung.com, robin.murphy@arm.com,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org,
iommu@lists.linux-foundation.org
Cc: mikelley@microsoft.com
Subject: [PATCH 2/4] dma-mapping: Add wrapper function to set dma_coherent
Date: Thu, 17 Mar 2022 09:12:41 -0700 [thread overview]
Message-ID: <1647533563-2170-3-git-send-email-mikelley@microsoft.com> (raw)
In-Reply-To: <1647533563-2170-1-git-send-email-mikelley@microsoft.com>
Add a wrapper function to set dma_coherent, avoiding the need for
complex #ifdef's when setting it in architecture independent code.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
---
include/linux/dma-map-ops.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h
index 0d5b06b..3350e7a 100644
--- a/include/linux/dma-map-ops.h
+++ b/include/linux/dma-map-ops.h
@@ -254,11 +254,20 @@ static inline bool dev_is_dma_coherent(struct device *dev)
{
return dev->dma_coherent;
}
+static inline void dev_set_dma_coherent(struct device *dev,
+ bool coherent)
+{
+ dev->dma_coherent = coherent;
+}
#else
static inline bool dev_is_dma_coherent(struct device *dev)
{
return true;
}
+static inline void dev_set_dma_coherent(struct device *dev,
+ bool coherent)
+{
+}
#endif /* CONFIG_ARCH_HAS_DMA_COHERENCE_H */
void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
--
1.8.3.1
next prev parent reply other threads:[~2022-03-17 16:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-17 16:12 [PATCH 0/4] Fix coherence for VMbus and PCI pass-thru devices in Hyper-V VM Michael Kelley
2022-03-17 16:12 ` [PATCH 1/4] ACPI: scan: Export acpi_get_dma_attr() Michael Kelley
2022-03-17 16:12 ` Michael Kelley [this message]
2022-03-17 16:12 ` [PATCH 3/4] Drivers: hv: vmbus: Propagate VMbus coherence to each VMbus device Michael Kelley
2022-03-17 16:12 ` [PATCH 4/4] PCI: hv: Propagate coherence from VMbus device to PCI device Michael Kelley
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