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authorTakahisa Tanaka <mc74hc00@gmail.com>2013-01-14 11:01:57 +0900
committerWim Van Sebroeck <wim@iguana.be>2013-03-01 12:19:26 +0100
commit10ab329b5db7e592a3a60b4594e4e5f40b60c45c (patch)
tree52e8c155fe20f181df604c3ac5cefa2a306c0bbb /drivers/media/dvb-frontends/lnbp22.c
parent6737176569d1d6356c644694d60ea2b265cb3870 (diff)
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watchdog: sp5100_tco: Fix wrong indirect I/O access for getting value of reserved bits
In case of SB800 or later chipset and re-programming MMIO address(*), sp5100_tco module may read incorrect value of reserved bit, because the module reads a value from an incorrect I/O address. However, this bug doesn't cause a problem, because when re-programming MMIO address, by chance the module writes zero (this is BIOS's default value) to the low three bits of register. * In most cases, PC with SB8x0 or later chipset doesn't need to re-programming MMIO address, because such PC can enable AcpiMmio and can use 0xfed80b00 for watchdog register base address. This patch fixes this bug. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43176 Signed-off-by: Takahisa Tanaka <mc74hc00@gmail.com> Tested-by: Paul Menzel <paulepanter@users.sourceforge.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: stable <stable@vger.kernel.org>
Diffstat (limited to 'drivers/media/dvb-frontends/lnbp22.c')
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