From: Nick Meier Date: Wed, 18 Mar 2015 19:29:24 +0000 (-0700) Subject: Drivers: hv: vmbus: Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5ef5b6927f14f29cacd78fa1fb861661a5367f13;p=linux-beck.git Drivers: hv: vmbus: Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY HV_CRASH_CTL_CRASH_NOTIFY is a 64 bit number. Depending on the usage context, the value may be truncated. This patch is in response from the following email from Wu Fengguang : From: Wu Fengguang Subject: [char-misc:char-misc-testing 25/45] drivers/hv/vmbus_drv.c:67:9: sparse: constant 0x8000000000000000 is so big it is unsigned long tree: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-testing head: b3de8e3719e582f3182bb504295e4a8e43c8c96f commit: 96c1d0581d00f7abe033350edb021a9d947d8d81 [25/45] Drivers: hv: vmbus: Add support for VMBus panic notifier handler reproduce: # apt-get install sparse git checkout 96c1d0581d00f7abe033350edb021a9d947d8d81 make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) drivers/hv/vmbus_drv.c:67:9: sparse: constant 0x8000000000000000 is so big it is unsigned long ... Signed-off-by: Nick Meier Reported-by: Wu Fengguang Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 63395896baf9..c8e27e0fdc99 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -58,7 +58,7 @@ enum hv_cpuid_function { #define HV_X64_MSR_CRASH_P4 0x40000104 #define HV_X64_MSR_CRASH_CTL 0x40000105 -#define HV_CRASH_CTL_CRASH_NOTIFY 0x8000000000000000 +#define HV_CRASH_CTL_CRASH_NOTIFY (1ULL << 63) /* Define version of the synthetic interrupt controller. */ #define HV_SYNIC_VERSION (1)