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Some ARM platforms have the ability to program the interrupt controller to
detect various interrupt edges and/or levels. For some platforms, this is
critical to setup correctly, particularly those which the setting is dependent
on the device.
Currently, ARM drivers do (eg) the following:
err = request_irq(irq, ...);
set_irq_type(irq, IRQT_RISING);
However, if the interrupt has previously been programmed to be level sensitive
(for whatever reason) then this will cause an interrupt storm.
Hence, if we combine set_irq_type() with request_irq(), we can then safely set
the type prior to unmasking the interrupt. The unfortunate problem is that in
order to support this, these flags need to be visible outside of the ARM
architecture - drivers such as smc91x need these flags and they're
cross-architecture.
Finally, the SA_TRIGGER_* flag passed to request_irq() should reflect the
property that the device would like. The IRQ controller code should do its
best to select the most appropriate supported mode.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Use read/write IO operations rather than in/out, as per other
SA1100 platforms.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The following patch support the SMC9111 present on DB1200 boards.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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Update SMC91x driver for m32r.
- Remove needless NONCACHE_OFFSET adjustment.
> [PATCH 2.6.14-rc4] m32r: NONCACHE_OFFSET in _port2addr
> Change _port2addr() not to add NONCACHE_OFFSET.
> Adding NONCACHE_OFFSET requires needless address adjusting by a driver
> using ioremap() like a SMC91x driver.
- Fix lots of warnings as following:
/usr/src/ctest/git/kernel/drivers/net/smc91x.c: In function `smc_reset':
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:324: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:325: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:341: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:342: warning: passing arg 2 of `_outw' makes integer from pointer without a cast
:
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:1915: warning: passing arg 1 of `_inw' makes integer from pointer without a cast
/usr/src/ctest/git/kernel/drivers/net/smc91x.c:1915: warning: passing arg 1 of `_inw' makes integer from pointer without a cast
Signed-off-by: Hayato Fujiwara <fujiwara@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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--ReaqsoxgOBHFXBhH
Content-Type: text/plain; charset=us-ascii
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Hi Jeff,
Here's a little patch fixing a typo in smc91x.h.
Regards,
Tony
--ReaqsoxgOBHFXBhH
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Content-Disposition: inline; filename="patch-fix-typo-smc91x.h"
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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For boards that invert the SMC91x IRQ line (maybe an FPGA inverts it),
the set_irq_type() call can't assume IRQT_RISING. These particular
boards currently use OMAP-specific calls to change the trigger type,
but the boards break when set_irq_type() stops being a NOP.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
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... and remove duplicate status defines.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Index: linux-2.6/drivers/net/smc91x.c
===================================================================
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A few IO addr type conversions were missing.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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