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authorRalf Baechle <ralf@linux-mips.org>2007-12-13 19:05:34 -0500
committerRalf Baechle <ralf@linux-mips.org>2007-12-14 12:34:30 -0500
commit4037500ebcfd172a15aed40caa847c52e9906712 (patch)
tree6957163263ef1e1161d92a8973c69b60031f8011 /arch/mips/kernel/process.c
parentd20e47e153dcfddca5a066ff0f8da2d1104d08ea (diff)
[MIPS] time: Delete weak definition of plat_time_init() due to gcc bug.
Frank Rowand <frank.rowand@am.sony.com> reports: > In linux-2.6.24-rc4 the Toshiba RBTX4927 hangs on boot. > > The cause is that plat_time_init() from arch/mips/tx4927/common/ > tx4927_setup.c does not override the __weak plat_time_init() from > arch/mips/kernel/time.c. This is due to a compiler bug in gcc 4.1.1. The > bug is reported to not exist in earlier versions of gcc, and to be fixed in > 4.1.2. The problem is that the __weak plat_time_init() is empty and thus > gets optimized out of existence (thus the linker is never given the option > to replace the __weak function). [ He meant the call to plat_time_init() from time_init() gets optimized away ] > For more info on the gcc bug see > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27781 > > The attached patch is one workaround. Another possible workaround [ His patch adds -fno-unit-at-a-time for time.c ] > would be to change the __weak plat_time_init() to be a non-empty > function. The __weak definition of plat_time_init was only ever meant to be a migration helper to keep platforms that don't have a plat_time_init compiling. A few greps says that all platforms now supply their own plat_time_init() so the weak definition is no longer needed. So I instead delete it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/process.c')
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