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If write fails, remember to close(fd) before returning.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
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Fix up -Wmissing-prototypes in compileable userspace code, mainly under
Documentation/.
Signed-off-by: Ladinu Chandrasinghe <ladinu.pub@gmail.com>
Signed-off-by: Trevor Keith <tsrk@tsrk.net>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Eliminate all build warnings. OK, these build warnings are from
a build on x86_64. When I build on ia64, I don't see warnings.
Now builds cleanly on ia64 and x86_64.
Documentation/ia64/aliasing-test.c: In function 'map_mem':
Documentation/ia64/aliasing-test.c:39: warning: implicit declaration of function 'ioctl'
Documentation/ia64/aliasing-test.c: In function 'scan_rom':
Documentation/ia64/aliasing-test.c:183: warning: format '%ld' expects type 'long int', but argument 4 has type 'int'
Documentation/ia64/aliasing-test.c: At top level:
Documentation/ia64/aliasing-test.c:208: warning: function declaration isn't a prototype
Documentation/ia64/aliasing-test.c: In function 'main':
Documentation/ia64/aliasing-test.c:259: warning: control reaches end of non-void function
Documentation/ia64/aliasing-test.c: In function 'scan_rom':
Documentation/ia64/aliasing-test.c:152: warning: 'rc' may be used uninitialized in this function
Documentation/ia64/aliasing-test.c: In function 'scan_tree':
Documentation/ia64/aliasing-test.c:68: warning: 'rc' may be used uninitialized in this function
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Example memory map (HP rx7640 with 'default' acpiconfig setting, VGA disabled):
0x00000000 - 0x3FFFBFFF supports only WB (cacheable) access
If a user attempts to perform an MMIO mmap (using the PCIIOC_MMAP_IS_MEM ioctl)
to PCI config space (like mmap'ing and accessing memory at 0xA0000),
we will MCA because the kernel will attempt to use a mapping with the UC
attribute.
So check the memory attribute in kern_mmap and the EFI memmap. If WC is
requested, and WC or UC access is supported for the region, allow it.
Otherwise, use the same attribute the kernel uses.
Updates documentation and test cases as well.
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Fix various bits of obviously-busted code which we're not happening to
compile, due to ifdefs.
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Jan Kara <jack@ucw.cz>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Updates documentation and adds some test cases.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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