The DMA driver has call-backs for doing asynchronous I/O which are
protected by a CONFIG_ macro which is not defined. Added a Kconfig
stanza to define it.
Cc: Matt Sickler <matt.sick...@daktronics.com>
Signed-off-by: Jeremy Sowden <jer...@azazel.net>
---
drivers/staging/kpc2000/Kconfig | 8 ++++++++
drivers/staging/kpc2000/kpc_dma/fileops.c | 6 +++---
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/kpc2000/Kconfig b/drivers/staging/kpc2000/Kconfig
index 897965359fcb..694cef28c1b3 100644
--- a/drivers/staging/kpc2000/Kconfig
+++ b/drivers/staging/kpc2000/Kconfig
@@ -57,3 +57,11 @@ config KPC2000_DMA
If unsure, say N.
+config KPC2000_DMA_AIO
+ bool "Daktronics KPC DMA controller (asynchronous IO)"
+ depends on KPC2000_DMA && AIO
+ help
+ Say Y here if you wish to support asynchronous IO with the Daktronics
+ DMA controller.
+
+ If unsure, say N.
diff --git a/drivers/staging/kpc2000/kpc_dma/fileops.c
b/drivers/staging/kpc2000/kpc_dma/fileops.c
index f80b01715d93..ee382dee01ca 100644
--- a/drivers/staging/kpc2000/kpc_dma/fileops.c
+++ b/drivers/staging/kpc2000/kpc_dma/fileops.c
@@ -242,7 +242,7 @@ void transfer_complete_cb(struct aio_cb_data *acd, size_t
xfr_count, u32 flags)
kfree(acd);
}
} else {
-#ifdef CONFIG_KPC_DMA_AIO
+#ifdef CONFIG_KPC2000_DMA_AIO
aio_complete(acd->kcb, acd->len, acd->flags);
#endif
kfree(acd);
@@ -308,7 +308,7 @@ int kpc_dma_close(struct inode *inode, struct file *filp)
return 0;
}
-#ifdef CONFIG_KPC_DMA_AIO
+#ifdef CONFIG_KPC2000_DMA_AIO
static
int kpc_dma_aio_cancel(struct kiocb *kcb)
{
@@ -402,7 +402,7 @@ const struct file_operations kpc_dma_fops = {
.release = kpc_dma_close,
.read = kpc_dma_read,
.write = kpc_dma_write,
-#ifdef CONFIG_KPC_DMA_AIO
+#ifdef CONFIG_KPC2000_DMA_AIO
.aio_read = kpc_dma_aio_read,
.aio_write = kpc_dma_aio_write,
#endif
--
2.20.1
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