diff options
| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2023-01-13 20:14:06 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2023-02-22 13:46:09 -0600 |
| commit | 3bc0f149405e07c7e59985a24ce96db83973f8d7 (patch) | |
| tree | 224ce6d6e036778e54629ac484c730b062644f05 /include/linux/dma | |
| parent | acf994151dd9a59d544b5d3c196b64f326d94c52 (diff) | |
dmaengine: dw-edma: Prepare dw_edma_probe() for builtin callers
When CONFIG_DW_EDMA=m, dw_edma_probe() is built as a module. Previously
edma.h declared it as extern, but the implementation isn't available for
builtin callers. A subsequent commit will add calls from
dw_pcie_host_init() and dw_pcie_ep_init(), which can only be built-in.
Make it safe for such builtin callers to call dw_edma_probe() by using
IS_REACHABLE() to define a stub when CONFIG_DW_EDMA=m.
When CONFIG_DW_EDMA=m, these builtin callers will fail to detect and
register eDMA devices, so eDMA won't be usable even if the dw-edma module
is loaded.
[bhelgaas: split to separate patch, commit log]
Link: https://lore.kernel.org/r/20230113171409.30470-25-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'include/linux/dma')
| -rw-r--r-- | include/linux/dma/edma.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h index 3b80040b95cc..d2638d9259dc 100644 --- a/include/linux/dma/edma.h +++ b/include/linux/dma/edma.h @@ -101,7 +101,7 @@ struct dw_edma_chip { }; /* Export to the platform drivers */ -#if IS_ENABLED(CONFIG_DW_EDMA) +#if IS_REACHABLE(CONFIG_DW_EDMA) int dw_edma_probe(struct dw_edma_chip *chip); int dw_edma_remove(struct dw_edma_chip *chip); #else |