---

yaml
---
r: 199708
b: refs/heads/master
c: ff6c734
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 03cd3739818d3fa7f973d0fb6d3aa63122ea00a0
+refs/heads/master: ff6c7341e0bc486c3e1b369ab7f3b325b98600d3

trunk/.gitignore

@@ -28,7 +28,6 @@ modules.builtin
 *.gz
 *.bz2
 *.lzma
-*.lzo
 *.patch
 *.gcno
 

trunk/Documentation/DMA-API-HOWTO.txt

@@ -639,36 +639,6 @@ is planned to completely remove virt_to_bus() and bus_to_virt() as
 they are entirely deprecated.  Some ports already do not provide these
 as it is impossible to correctly support them.
 
-			Handling Errors
-
-DMA address space is limited on some architectures and an allocation
-failure can be determined by:
-
-- checking if dma_alloc_coherent returns NULL or dma_map_sg returns 0
-
-- checking the returned dma_addr_t of dma_map_single and dma_map_page
-  by using dma_mapping_error():
-
-	dma_addr_t dma_handle;
-
-	dma_handle = dma_map_single(dev, addr, size, direction);
-	if (dma_mapping_error(dev, dma_handle)) {
-		/*
-		 * reduce current DMA mapping usage,
-		 * delay and try again later or
-		 * reset driver.
-		 */
-	}
-
-Networking drivers must call dev_kfree_skb to free the socket buffer
-and return NETDEV_TX_OK if the DMA mapping fails on the transmit hook
-(ndo_start_xmit). This means that the socket buffer is just dropped in
-the failure case.
-
-SCSI drivers must return SCSI_MLQUEUE_HOST_BUSY if the DMA mapping
-fails in the queuecommand hook. This means that the SCSI subsystem
-passes the command to the driver again later.
-
 		Optimizing Unmap State Space Consumption
 
 On many platforms, dma_unmap_{single,page}() is simply a nop.
@@ -733,25 +703,42 @@ to "Closing".
 
 1) Struct scatterlist requirements.
 
-   Don't invent the architecture specific struct scatterlist; just use
-   <asm-generic/scatterlist.h>. You need to enable
-   CONFIG_NEED_SG_DMA_LENGTH if the architecture supports IOMMUs
-   (including software IOMMU).
-
-2) ARCH_KMALLOC_MINALIGN
-
-   Architectures must ensure that kmalloc'ed buffer is
-   DMA-safe. Drivers and subsystems depend on it. If an architecture
-   isn't fully DMA-coherent (i.e. hardware doesn't ensure that data in
-   the CPU cache is identical to data in main memory),
-   ARCH_KMALLOC_MINALIGN must be set so that the memory allocator
-   makes sure that kmalloc'ed buffer doesn't share a cache line with
-   the others. See arch/arm/include/asm/cache.h as an example.
-
-   Note that ARCH_KMALLOC_MINALIGN is about DMA memory alignment
-   constraints. You don't need to worry about the architecture data
-   alignment constraints (e.g. the alignment constraints about 64-bit
-   objects).
+   Struct scatterlist must contain, at a minimum, the following
+   members:
+
+	struct page *page;
+	unsigned int offset;
+	unsigned int length;
+
+   The base address is specified by a "page+offset" pair.
+
+   Previous versions of struct scatterlist contained a "void *address"
+   field that was sometimes used instead of page+offset.  As of Linux
+   2.5., page+offset is always used, and the "address" field has been
+   deleted.
+
+2) More to come...
+
+			Handling Errors
+
+DMA address space is limited on some architectures and an allocation
+failure can be determined by:
+
+- checking if dma_alloc_coherent returns NULL or dma_map_sg returns 0
+
+- checking the returned dma_addr_t of dma_map_single and dma_map_page
+  by using dma_mapping_error():
+
+	dma_addr_t dma_handle;
+
+	dma_handle = dma_map_single(dev, addr, size, direction);
+	if (dma_mapping_error(dev, dma_handle)) {
+		/*
+		 * reduce current DMA mapping usage,
+		 * delay and try again later or
+		 * reset driver.
+		 */
+	}
 
 			   Closing
 

trunk/Documentation/DocBook/drm.tmpl

@@ -389,7 +389,7 @@
       </para>
       <para>
 	If your driver supports memory management (it should!), you'll
-	need to set that up at load time as well.  How you initialize
+	need to set that up at load time as well.  How you intialize
 	it depends on which memory manager you're using, TTM or GEM.
       </para>
       <sect3>
@@ -399,7 +399,7 @@
 	  aperture space for graphics devices. TTM supports both UMA devices
 	  and devices with dedicated video RAM (VRAM), i.e. most discrete
 	  graphics devices.  If your device has dedicated RAM, supporting
-	  TTM is desirable.  TTM also integrates tightly with your
+	  TTM is desireable.  TTM also integrates tightly with your
 	  driver specific buffer execution function.  See the radeon
 	  driver for examples.
 	</para>
@@ -443,7 +443,7 @@
 	  likely eventually calling ttm_bo_global_init and
 	  ttm_bo_global_release, respectively.  Also like the previous
 	  object, ttm_global_item_ref is used to create an initial reference
-	  count for the TTM, which will call your initialization function.
+	  count for the TTM, which will call your initalization function.
 	</para>
       </sect3>
       <sect3>
@@ -557,7 +557,7 @@ void intel_crt_init(struct drm_device *dev)
 	  CRT connector and encoder combination is created.  A device
 	  specific i2c bus is also created, for fetching EDID data and
 	  performing monitor detection.  Once the process is complete,
-	  the new connector is registered with sysfs, to make its
+	  the new connector is regsitered with sysfs, to make its
 	  properties available to applications.
 	</para>
 	<sect4>
@@ -581,12 +581,12 @@ void intel_crt_init(struct drm_device *dev)
 	<para>
 	  For each encoder, CRTC and connector, several functions must
 	  be provided, depending on the object type.  Encoder objects
-	  need to provide a DPMS (basically on/off) function, mode fixup
+	  need should provide a DPMS (basically on/off) function, mode fixup
 	  (for converting requested modes into native hardware timings),
 	  and prepare, set and commit functions for use by the core DRM
 	  helper functions.  Connector helpers need to provide mode fetch and
 	  validity functions as well as an encoder matching function for
-	  returning an ideal encoder for a given connector.  The core
+	  returing an ideal encoder for a given connector.  The core
 	  connector functions include a DPMS callback, (deprecated)
 	  save/restore routines, detection, mode probing, property handling,
 	  and cleanup functions.

trunk/Documentation/SubmittingDrivers

@@ -130,8 +130,6 @@ Linux kernel master tree:
 	ftp.??.kernel.org:/pub/linux/kernel/...
 	?? == your country code, such as "us", "uk", "fr", etc.
 
-	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git
-
 Linux kernel mailing list:
 	linux-kernel@vger.kernel.org
 	[mail majordomo@vger.kernel.org to subscribe]
@@ -162,6 +160,3 @@ How to NOT write kernel driver by Arjan van de Ven:
 
 Kernel Janitor:
 	http://janitor.kernelnewbies.org/
-
-GIT, Fast Version Control System:
-	http://git-scm.com/