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author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-12-28 14:25:23 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2018-01-08 20:01:44 +0100 |
commit | 9d0513d82f1a8fe17b41f113ac5922fa57dbaf5c (patch) | |
tree | 145a8b0de384b24243a98baf76588cd611ed857e | |
parent | b94b7373317164402ff7728d10f7023127a02b60 (diff) | |
download | linux-9d0513d82f1a8fe17b41f113ac5922fa57dbaf5c.tar.bz2 |
x86/platform/intel-mid: Revert "Make 'bt_sfi_data' const"
So one of the constification patches unearthed a type casting fragility
of the underlying code:
276c87054751 ("x86/platform/intel-mid: Make 'bt_sfi_data' const")
converted the struct to be const while it is also used as a temporary
container for important data that is used to fill 'parent' and 'name'
fields in struct platform_device_info.
The compiler doesn't notice this due to an explicit type cast that loses
the const - which fragility will be fixed separately.
This type cast turned a seemingly trivial const propagation patch into a
hard to debug data corruptor and crasher bug.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bhumika Goyal <bhumirks@gmail.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: julia.lawall@lip6.fr
Cc: platform-driver-x86@vger.kernel.org
Link: http://lkml.kernel.org/r/20171228122523.21802-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r-- | arch/x86/platform/intel-mid/device_libs/platform_bt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_bt.c b/arch/x86/platform/intel-mid/device_libs/platform_bt.c index dc036e511f48..5a0483e7bf66 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_bt.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_bt.c @@ -60,7 +60,7 @@ static int __init tng_bt_sfi_setup(struct bt_sfi_data *ddata) return 0; } -static const struct bt_sfi_data tng_bt_sfi_data __initdata = { +static struct bt_sfi_data tng_bt_sfi_data __initdata = { .setup = tng_bt_sfi_setup, }; |