[obsolete] lib-iomap_copy-add-__ioread32_copy.patch removed from -mm tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The patch titled
     Subject: lib: iomap_copy: Add __ioread32_copy()
has been removed from the -mm tree.  Its filename was
     lib-iomap_copy-add-__ioread32_copy.patch

This patch was dropped because it is obsolete

------------------------------------------------------
From: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Subject: lib: iomap_copy: Add __ioread32_copy()

Some drivers need to read data out of iomem areas 32-bits at a time.  Add
an API to do this.

Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx>
Cc: Andy Gross <agross@xxxxxxxxxxxxxx>
Cc: David Brown <davidb@xxxxxxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 include/linux/io.h |    1 +
 lib/iomap_copy.c   |   21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff -puN include/linux/io.h~lib-iomap_copy-add-__ioread32_copy include/linux/io.h
--- a/include/linux/io.h~lib-iomap_copy-add-__ioread32_copy
+++ a/include/linux/io.h
@@ -29,6 +29,7 @@ struct device;
 struct resource;
 
 __visible void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
+void __ioread32_copy(void *to, const void __iomem *from, size_t count);
 void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
 
 #ifdef CONFIG_MMU
diff -puN lib/iomap_copy.c~lib-iomap_copy-add-__ioread32_copy lib/iomap_copy.c
--- a/lib/iomap_copy.c~lib-iomap_copy-add-__ioread32_copy
+++ a/lib/iomap_copy.c
@@ -42,6 +42,27 @@ void __attribute__((weak)) __iowrite32_c
 EXPORT_SYMBOL_GPL(__iowrite32_copy);
 
 /**
+ * __ioread32_copy - copy data from MMIO space, in 32-bit units
+ * @to: destination (must be 32-bit aligned)
+ * @from: source, in MMIO space (must be 32-bit aligned)
+ * @count: number of 32-bit quantities to copy
+ *
+ * Copy data from MMIO space to kernel space, in units of 32 bits at a
+ * time.  Order of access is not guaranteed, nor is a memory barrier
+ * performed afterwards.
+ */
+void __ioread32_copy(void *to, const void __iomem *from, size_t count)
+{
+	u32 *dst = to;
+	const u32 __iomem *src = from;
+	const u32 __iomem *end = src + count;
+
+	while (src < end)
+		*dst++ = __raw_readl(src++);
+}
+EXPORT_SYMBOL_GPL(__ioread32_copy);
+
+/**
  * __iowrite64_copy - copy data to MMIO space, in 64-bit or 32-bit units
  * @to: destination, in MMIO space (must be 64-bit aligned)
  * @from: source (must be 64-bit aligned)
_

Patches currently in -mm which might be from sboyd@xxxxxxxxxxxxxx are


--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Kernel Newbies FAQ]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Photo]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]

  Powered by Linux