Major layout change to the packages directory

Having one monolithic packages directory makes it hard to find things
and is generally overwhelming. This commit splits it into several
logical sections roughly based on function, recipes.txt gives more
information about the classifications used.

The opportunity is also used to switch from "packages" to "recipes"
as used in OpenEmbedded as the term "packages" can be confusing to
people and has many different meanings.

Not all recipes have been classified yet, this is just a first pass
at separating things out. Some packages are moved to meta-extras as
they're no longer actively used or maintained.

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 118 insertions, 0 deletions

diff --git a/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/i2c-omap-race-fix.diff b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/i2c-omap-race-fix.diff
new file mode 100644
index 000000000..6eb33f76b
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/i2c-omap-race-fix.diff
@@ -0,0 +1,118 @@
+From linux-omap-owner@vger.kernel.org Tue Jul 15 21:23:13 2008
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+Date: 	Tue, 15 Jul 2008 13:00:18 -0600 (MDT)
+From: Paul Walmsley <paul@pwsan.com>
+To: linux-omap@vger.kernel.org
+Subject: [PATCH] i2c-omap: close suspected race between omap_i2c_idle() and
+ omap_i2c_isr()
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+
+
+omap_i2c_idle() sets an internal flag, "dev->idle", instructing its
+ISR to decline interrupts.  It sets this flag before it actually masks
+the interrupts on the I2C controller.  This is problematic, since an
+I2C interrupt could arrive after dev->idle is set, but before the
+interrupt source is masked.  When this happens, Linux disables the I2C
+controller's IRQ, causing all future transactions on the bus to fail.
+
+Symptoms, happening on about 7% of boots:
+
+   irq 56: nobody cared (try booting with the "irqpoll" option)
+   <warning traceback here>
+   Disabling IRQ #56
+   i2c_omap i2c_omap.1: controller timed out
+
+In omap_i2c_idle(), this patch sets dev->idle only after the interrupt
+mask write to the I2C controller has left the ARM write buffer.
+That's probably the major offender.  For additional prophylaxis, in
+omap_i2c_unidle(), the patch clears the dev->idle flag before
+interrupts are enabled, rather than afterwards.
+
+The patch has survived twenty-two reboots on the 3430SDP here without
+wedging I2C1.  Not absolutely dispositive, but promising!
+
+
+Signed-off-by: Paul Walmsley <paul@pwsan.com>
+---
+
+ drivers/i2c/busses/i2c-omap.c |   10 ++++++++--
+ 1 files changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
+index 55779f5..ed7e9ad 100644
+--- a/drivers/i2c/busses/i2c-omap.c
++++ b/drivers/i2c/busses/i2c-omap.c
+@@ -209,22 +209,28 @@ static void omap_i2c_unidle(struct omap_i2c_dev *dev)
+ 	if (dev->iclk != NULL)
+ 		clk_enable(dev->iclk);
+ 	clk_enable(dev->fclk);
++	dev->idle = 0;
+ 	if (dev->iestate)
+ 		omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate);
+-	dev->idle = 0;
+ }
+ 
+ static void omap_i2c_idle(struct omap_i2c_dev *dev)
+ {
+ 	u16 iv;
+ 
+-	dev->idle = 1;
+ 	dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
+ 	omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0);
+ 	if (dev->rev1)
+ 		iv = omap_i2c_read_reg(dev, OMAP_I2C_IV_REG);
+ 	else
+ 		omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, dev->iestate);
++	/*
++	 * The wmb() is to ensure that the I2C interrupt mask write
++	 * reaches the I2C controller before the dev->idle store
++	 * occurs.
++	 */
++	wmb();
++	dev->idle = 1;
+ 	clk_disable(dev->fclk);
+ 	if (dev->iclk != NULL)
+ 		clk_disable(dev->iclk);
+--
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