linux-toradex.git/scripts/mod/file2alias.c, branch v2.6.34.15

modpost: fix segfault in sym_is() with prefixed arches

2010-01-17T19:00:53+00:00

The sym_is() compares a symbol in an attempt to automatically skip symbol
prefixes.  It does this first by searching the real symbol with the normal
unprefixed symbol.  But then it uses the length of the original symbol to
check the end of the substring instead of the length of the symbol it is
looking for.  On non-prefixed arches, this is effectively the same thing,
so there is no problem.  On prefixed-arches, since this is exceeds by just
one byte, a crash is rare and it is usually a NUL byte anyways.  But every
once in a blue moon, you get the right page alignment and it segfaults.

For example, on the Blackfin arch, sym_is() will be called with the real
symbol "___mod_usb_device_table" as "symbol" when looking for the normal
symbol "__mod_usb_device_table" as "name".  The substring will thus return
one byte into "symbol" and store it into "match".  But then "match" will
be indexed with the length of "symbol" instead of "name" and so we will
exceed the storage.  i.e. the code ends up doing:
	char foo[] = "abc"; return foo[strlen(foo)+1] == '\0';

Signed-off-by: Mike Frysinger 
Signed-off-by: Rusty Russell 
Signed-off-by: Linus Torvalds

USB: handle bcd incrementation in usb modalias generation

2009-12-11T19:55:20+00:00

This patch fixes a bug when incrementing/decrementing on a BCD formatted
integer (i.e. 0x09++ should be 0x10 not 0x0A).  It just adds a function
for incrementing/decrementing BCD integers by converting to decimal,
doing the increment/decrement and then converting back to BCD.

Signed-off-by: Nathaniel McCallum 
Signed-off-by: Greg Kroah-Hartman

USB: add hex/bcd detection to usb modalias generation

2009-12-11T19:55:20+00:00

The current code to generate usb modaliases from usb_device_id assumes
that the device's bcdDevice descriptor will actually be in BCD format.
While this should be a sane assumption, some devices don't follow spec
and just use plain old hex.  This causes drivers for these devices to
generate invalid modalias lines which will never actually match for the
hardware.

The following patch adds hex support for bcdDevice in file2alias.c by
detecting when a driver uses a hex formatted bcdDevice_(lo|hi) and
adjusts the output to hex format accordingly.

Drivers for devices which have bcdDevice conforming to BCD will have no
change in modalias output.  Drivers for devices which don't conform
(i.e. ibmcam) should now generate valid modaliases.

EXAMPLE OUTPUT (ibmcam; space added to highlight change)
    Old: usb:v0545p800D d030[10-9] dc*dsc*dp*ic*isc*ip*
    New: usb:v0545p800D d030a      dc*dsc*dp*ic*isc*ip*

Signed-off-by: Nathaniel McCallum 
Signed-off-by: Greg Kroah-Hartman

spi: prefix modalias with "spi:"

2009-09-23T14:39:43+00:00

This makes it consistent with other buses (platform, i2c, vio, ...).  I'm
not sure why we use the prefixes, but there must be a reason.

This was easy enough to do it, and I did it.

Signed-off-by: Anton Vorontsov 
Cc: David Brownell 
Cc: David Woodhouse 
Cc: Grant Likely 
Cc: Jean Delvare 
Cc: Ben Dooks 
Cc: Benjamin Herrenschmidt 
Cc: Dmitry Torokhov 
Cc: Samuel Ortiz 
Cc: "John W. Linville" 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: add support for device table matching

2009-09-23T14:39:43+00:00

With this patch spi drivers can use standard spi_driver.id_table and
MODULE_DEVICE_TABLE() mechanisms to bind against the devices.  Just like
we do with I2C drivers.

This is useful when a single driver supports several variants of devices
but it is not possible to detect them in run-time (like non-JEDEC chips
probing in drivers/mtd/devices/m25p80.c), and when platform_data usage is
overkill.

This patch also makes life a lot easier on OpenFirmware platforms, since
with OF we extensively use proper device IDs in modaliases.

Signed-off-by: Anton Vorontsov 
Cc: David Brownell 
Cc: David Woodhouse 
Cc: Grant Likely 
Cc: Jean Delvare 
Cc: Ben Dooks 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

virtio: enhance id_matching for virtio drivers

2009-06-12T12:46:40+00:00

This patch allows a virtio driver to use VIRTIO_DEV_ANY_ID for the
device id. This will be used by a test module that can be bound to
any virtio device.

Signed-off-by: Christian Borntraeger 
Signed-off-by: Rusty Russell

platform: introduce module id table for platform devices

2009-03-24T23:38:24+00:00

Now platform_device is being widely used on SoC processors where the
peripherals are attached to the system bus, which is simple enough.

However, silicon IPs for these SoCs are usually shared heavily across
a family of processors, even products from different companies.  This
makes the original simple driver name based matching insufficient, or
simply not straight-forward.

Introduce a module id table for platform devices, and makes it clear
that a platform driver is able to support some shared IP and handle
slight differences across different platforms (by 'driver_data').
Module alias is handled automatically when a MODULE_DEVICE_TABLE()
is defined.

To not disturb the current platform drivers too much, the matched id
entry is recorded and can be retrieved by platform_get_device_id().

Signed-off-by: Eric Miao 
Cc: Kay Sievers 
Cc: Ben Dooks 
Signed-off-by: Greg Kroah-Hartman

HID: fix bus endianity in file2alias

2009-02-17T12:25:01+00:00

Fix endianness of bus member of hid_device_id in modpost.

Signed-off-by: Jiri Slaby 
Reported-by: Nye Liu 
Cc: Jiri Kosina 
Signed-off-by: Jiri Kosina

PNP: fix broken pnp lowercasing for acpi module aliases

2009-01-21T04:52:08+00:00

Based on a patch from Brian, who identified the issue.

Signed-off-by: Bryan Kadzban 
Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

modpost: add support for hid

2008-10-14T21:50:47+00:00

Generate aliases for hid device modules to support autoloading.

Signed-off-by: Jiri Slaby 
Signed-off-by: Jiri Kosina