Re: [PATCH v2 06/40] cris/uaccess: fix sparse errors
On Tue, Jan 06, 2015 at 04:43:50PM +0100, Michael S. Tsirkin wrote: > virtio wants to read bitwise types from userspace using get_user. At the > moment this triggers sparse errors, since the value is passed through an > integer. > > Fix that up using __force. Looks sane, I'll take this in the CRIS tree since you have a cleanup patch which depends on it. Thanks! /Jesper > Signed-off-by: Michael S. Tsirkin > --- > arch/cris/include/asm/uaccess.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h > index 9145408..9cf5a23 100644 > --- a/arch/cris/include/asm/uaccess.h > +++ b/arch/cris/include/asm/uaccess.h > @@ -153,7 +153,7 @@ struct __large_struct { unsigned long buf[100]; }; > ({ \ > long __gu_err, __gu_val;\ > __get_user_size(__gu_val,(ptr),(size),__gu_err);\ > - (x) = (__typeof__(*(ptr)))__gu_val; \ > + (x) = (__force __typeof__(*(ptr)))__gu_val; \ > __gu_err; \ > }) > > @@ -163,7 +163,7 @@ struct __large_struct { unsigned long buf[100]; }; > const __typeof__(*(ptr)) *__gu_addr = (ptr);\ > if (access_ok(VERIFY_READ,__gu_addr,size)) \ > __get_user_size(__gu_val,__gu_addr,(size),__gu_err);\ > - (x) = (__typeof__(*(ptr)))__gu_val; \ > + (x) = (__force __typeof__(*(ptr)))__gu_val; \ > __gu_err; \ > }) > > -- > MST /^JN - Jesper Nilsson -- Jesper Nilsson -- jesper.nils...@axis.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH v2 06/40] cris/uaccess: fix sparse errors
On Tue, Jan 06, 2015 at 04:43:50PM +0100, Michael S. Tsirkin wrote: virtio wants to read bitwise types from userspace using get_user. At the moment this triggers sparse errors, since the value is passed through an integer. Fix that up using __force. Looks sane, I'll take this in the CRIS tree since you have a cleanup patch which depends on it. Thanks! /Jesper Signed-off-by: Michael S. Tsirkin m...@redhat.com --- arch/cris/include/asm/uaccess.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h index 9145408..9cf5a23 100644 --- a/arch/cris/include/asm/uaccess.h +++ b/arch/cris/include/asm/uaccess.h @@ -153,7 +153,7 @@ struct __large_struct { unsigned long buf[100]; }; ({ \ long __gu_err, __gu_val;\ __get_user_size(__gu_val,(ptr),(size),__gu_err);\ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) @@ -163,7 +163,7 @@ struct __large_struct { unsigned long buf[100]; }; const __typeof__(*(ptr)) *__gu_addr = (ptr);\ if (access_ok(VERIFY_READ,__gu_addr,size)) \ __get_user_size(__gu_val,__gu_addr,(size),__gu_err);\ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) -- MST /^JN - Jesper Nilsson -- Jesper Nilsson -- jesper.nils...@axis.com -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH v2 06/40] cris/uaccess: fix sparse errors
virtio wants to read bitwise types from userspace using get_user. At the moment this triggers sparse errors, since the value is passed through an integer. Fix that up using __force. Signed-off-by: Michael S. Tsirkin --- arch/cris/include/asm/uaccess.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h index 9145408..9cf5a23 100644 --- a/arch/cris/include/asm/uaccess.h +++ b/arch/cris/include/asm/uaccess.h @@ -153,7 +153,7 @@ struct __large_struct { unsigned long buf[100]; }; ({ \ long __gu_err, __gu_val;\ __get_user_size(__gu_val,(ptr),(size),__gu_err);\ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) @@ -163,7 +163,7 @@ struct __large_struct { unsigned long buf[100]; }; const __typeof__(*(ptr)) *__gu_addr = (ptr);\ if (access_ok(VERIFY_READ,__gu_addr,size)) \ __get_user_size(__gu_val,__gu_addr,(size),__gu_err);\ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH v2 06/40] cris/uaccess: fix sparse errors
virtio wants to read bitwise types from userspace using get_user. At the moment this triggers sparse errors, since the value is passed through an integer. Fix that up using __force. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- arch/cris/include/asm/uaccess.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h index 9145408..9cf5a23 100644 --- a/arch/cris/include/asm/uaccess.h +++ b/arch/cris/include/asm/uaccess.h @@ -153,7 +153,7 @@ struct __large_struct { unsigned long buf[100]; }; ({ \ long __gu_err, __gu_val;\ __get_user_size(__gu_val,(ptr),(size),__gu_err);\ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) @@ -163,7 +163,7 @@ struct __large_struct { unsigned long buf[100]; }; const __typeof__(*(ptr)) *__gu_addr = (ptr);\ if (access_ok(VERIFY_READ,__gu_addr,size)) \ __get_user_size(__gu_val,__gu_addr,(size),__gu_err);\ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) -- MST -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/