[PATCH] ISA_DMA Kconfig fixes - part 2 (parport_pc)

Part of parport_pc that uses ISA DMA helpers made conditional on
CONFIG_ISA_DMA_API.  As the result, driver got usable for boxen that do
not have ISA DMA stuff and have normal PCI parport card stuck into
them - these never use DMA anyway.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 31 insertions, 11 deletions

diff --git a/drivers/parport/Kconfig b/drivers/parport/Kconfig
index 731010e0e6f6..16a2e6ae37f4 100644
--- a/drivers/parport/Kconfig
+++ b/drivers/parport/Kconfig
@@ -34,7 +34,7 @@ config PARPORT
 
 config PARPORT_PC
         tristate "PC-style hardware"
-        depends on PARPORT && (!SPARC64 || PCI) && (!SPARC32 || BROKEN)
+        depends on PARPORT && (!SPARC64 || PCI) && !SPARC32
         ---help---
           You should say Y here if you have a PC-style parallel port. All
           IBM PC compatible computers and some Alphas have PC-style
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index c5774e7855d0..e7f3bcb79000 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -67,6 +67,10 @@
 
 #define PARPORT_PC_MAX_PORTS PARPORT_MAX
 
+#ifdef CONFIG_ISA_DMA_API
+#define HAS_DMA
+#endif
+
 /* ECR modes */
 #define ECR_SPP 00
 #define ECR_PS2 01
@@ -610,6 +614,7 @@ dump_parport_state ("leave fifo_write_block_pio", port);
         return length - left;
 }
 
+#ifdef HAS_DMA
 static size_t parport_pc_fifo_write_block_dma (struct parport *port,
                                                const void *buf, size_t length)
 {
@@ -732,6 +737,17 @@ dump_parport_state ("enter fifo_write_block_dma", port);
 dump_parport_state ("leave fifo_write_block_dma", port);
         return length - left;
 }
+#endif
+
+static inline size_t parport_pc_fifo_write_block(struct parport *port,
+                                               const void *buf, size_t length)
+{
+#ifdef HAS_DMA
+        if (port->dma != PARPORT_DMA_NONE)
+                return parport_pc_fifo_write_block_dma (port, buf, length);
+#endif
+        return parport_pc_fifo_write_block_pio (port, buf, length);
+}
 
 /* Parallel Port FIFO mode (ECP chipsets) */
 static size_t parport_pc_compat_write_block_pio (struct parport *port,
@@ -758,10 +774,7 @@ static size_t parport_pc_compat_write_block_pio (struct parport *port,
         port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
 
         /* Write the data to the FIFO. */
-        if (port->dma != PARPORT_DMA_NONE)
-                written = parport_pc_fifo_write_block_dma (port, buf, length);
-        else
-                written = parport_pc_fifo_write_block_pio (port, buf, length);
+        written = parport_pc_fifo_write_block(port, buf, length);
 
         /* Finish up. */
         /* For some hardware we don't want to touch the mode until
@@ -856,10 +869,7 @@ static size_t parport_pc_ecp_write_block_pio (struct parport *port,
         port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
 
         /* Write the data to the FIFO. */
-        if (port->dma != PARPORT_DMA_NONE)
-                written = parport_pc_fifo_write_block_dma (port, buf, length);
-        else
-                written = parport_pc_fifo_write_block_pio (port, buf, length);
+        written = parport_pc_fifo_write_block(port, buf, length);
 
         /* Finish up. */
         /* For some hardware we don't want to touch the mode until
@@ -2285,6 +2295,7 @@ struct parport *parport_pc_probe_port (unsigned long int base,
                 }
 
 #ifdef CONFIG_PARPORT_PC_FIFO
+#ifdef HAS_DMA
                 if (p->dma != PARPORT_DMA_NONE) {
                         if (request_dma (p->dma, p->name)) {
                                 printk (KERN_WARNING "%s: dma %d in use, "
@@ -2306,7 +2317,8 @@ struct parport *parport_pc_probe_port (unsigned long int base,
                                 }
                         }
                 }
-#endif /* CONFIG_PARPORT_PC_FIFO */
+#endif
+#endif
         }
 
         /* Done probing.  Now put the port into a sensible start-up state. */
@@ -2367,11 +2379,13 @@ void parport_pc_unregister_port (struct parport *p)
         if (p->modes & PARPORT_MODE_ECP)
                 release_region(p->base_hi, 3);
 #ifdef CONFIG_PARPORT_PC_FIFO
+#ifdef HAS_DMA
         if (priv->dma_buf)
                 pci_free_consistent(priv->dev, PAGE_SIZE,
                                     priv->dma_buf,
                                     priv->dma_handle);
-#endif /* CONFIG_PARPORT_PC_FIFO */
+#endif
+#endif
         kfree (p->private_data);
         parport_put_port(p);
         kfree (ops); /* hope no-one cached it */
diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h
index ab88349ddadc..b7e635544cec 100644
--- a/include/asm-sparc64/parport.h
+++ b/include/asm-sparc64/parport.h
@@ -13,6 +13,12 @@
 
 #define PARPORT_PC_MAX_PORTS    PARPORT_MAX
 
+/*
+ * While sparc64 doesn't have an ISA DMA API, we provide something that looks
+ * close enough to make parport_pc happy
+ */
+#define HAS_DMA
+
 static struct sparc_ebus_info {
         struct ebus_dma_info info;
         unsigned int addr;