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  13. 08 Sep, 2009 1 commit
    • Anton Vorontsov's avatar
      Convert the m25p80 driver so that now it uses .id_table for device · 37b89bfa
      Anton Vorontsov authored 
      matching, making it properly detect devices on OpenFirmware platforms
(prior to this patch the driver misdetected non-JEDEC chips, seeing all
chips as "m25p80").

Also, now jedec_probe() only does jedec probing, nothing else.  If it is
not able to detect a chip, NULL is returned and the driver fall backs to
the information specified by the platform (platform_data, or exact ID).
Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      37b89bfa
  15. 31 Jul, 2009 1 commit
    • Anton Vorontsov's avatar
      With this patch spi drivers can use standard spi_driver.id_table and · c50b748f
      Anton Vorontsov authored 
      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: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      c50b748f
  17. 24 Jun, 2009 1 commit
  19. 23 Jul, 2009 1 commit
  21. 18 Jul, 2009 3 commits
  23. 24 Jun, 2009 1 commit
  25. 03 Sep, 2009 2 commits
  27. 25 Jul, 2009 1 commit
  29. 18 Jul, 2009 1 commit
  31. 09 Sep, 2009 1 commit
    • Roland McGrath's avatar
      In fs/binfmt_elf.c, load_elf_interp() calls padzero() for .bss even if the · 2e1a32d9
      Roland McGrath authored 
      PT_LOAD has no PROT_WRITE and no .bss.  This generates EFAULT.

Here is a small test case.  (Yes, there are other, useful PT_INTERP which
have only .text and no .data/.bss.)

	----- ptinterp.S
	_start: .globl _start
		 nop
		 int3
	-----
	$ gcc -m32 -nostartfiles -nostdlib -o ptinterp ptinterp.S
	$ gcc -m32 -Wl,--dynamic-linker=ptinterp -o hello hello.c
	$ ./hello
	Segmentation fault  # during execve() itself

	After applying the patch:
	$ ./hello
	Trace trap  # user-mode execution after execve() finishes

If the ELF headers are actually self-inconsistent, then dying is fine. 
But having no PROT_WRITE segment is perfectly normal and correct if there
is no segment with p_memsz > p_filesz (i.e.  bss).  John Reiser suggested
checking for PROT_WRITE in the bss logic.  I think it makes most sense to
simply apply the bss logic only when there is bss.

This patch looks less trivial than it is due to some reindentation.  It
just moves the "if (last_bss > elf_bss) {" test up to include the
partial-page bss logic as well as the more-pages bss logic.
Reported-by: default avatarJohn Reiser <jreiser@bitwagon.com>
Signed-off-by: default avatarRoland McGrath <roland@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: James Morris <jmorris@namei.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      2e1a32d9
  33. 03 Sep, 2009 1 commit
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  39. 01 Aug, 2009 1 commit