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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 15:46:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 15:46:08 -0700
commit23908db413eccd77084b09c9b0a4451dfb0524c0 (patch)
tree646f21a92496bdc04175e95642b0ecb2dc3dd09e /drivers/vme/vme.c
parent8d7804a2f03dbd34940fcb426450c730adf29dae (diff)
parent53a20e9e378ecd52f0afa4b60f8f8c81b6f97c27 (diff)
Merge tag 'staging-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver updates from Greg KH: "Here's the big, really big, staging tree patches for 4.2-rc1. Loads of stuff in here, almost all just coding style fixes / churn, and a few new drivers as well, one of which I just disabled from the build a few minutes ago due to way too many build warnings. Other than the one "disable this driver" patch, all of these have been in linux-next for quite a while with no reported issues" * tag 'staging-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1163 commits) staging: wilc1000: disable driver due to build warnings Staging: rts5208: fix CHANGE_LINK_STATE value Staging: sm750fb: ddk750_swi2c.c: Insert spaces before parenthesis Staging: sm750fb: ddk750_swi2c.c: Place braces on correct lines Staging: sm750fb: ddk750_swi2c.c: Insert spaces around operators Staging: sm750fb: ddk750_swi2c.c: Replace spaces with tabs Staging: sm750fb: ddk750_swi2c.h: Shorten lines to under 80 characters Staging: sm750fb: ddk750_swi2c.h: Replace spaces with tabs Staging: sm750fb: modedb.h: Shorten lines to under 80 characters Staging: sm750fb: modedb.h: Replace spaces with tabs staging: comedi: addi_apci_3120: rename 'this_board' variables staging: comedi: addi_apci_1516: rename 'this_board' variables staging: comedi: ni_atmio: cleanup ni_getboardtype() staging: comedi: vmk80xx: sanity check context used to get the boardinfo staging: comedi: vmk80xx: rename 'boardinfo' variables staging: comedi: dt3000: rename 'this_board' variables staging: comedi: adv_pci_dio: rename 'this_board' variables staging: comedi: cb_pcidas64: rename 'thisboard' variables staging: comedi: cb_pcidas: rename 'thisboard' variables staging: comedi: me4000: rename 'thisboard' variables ...
Diffstat (limited to 'drivers/vme/vme.c')
-rw-r--r--drivers/vme/vme.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/vme/vme.c b/drivers/vme/vme.c
index 6bab2c4ed77c..56708915ebbe 100644
--- a/drivers/vme/vme.c
+++ b/drivers/vme/vme.c
@@ -177,8 +177,8 @@ size_t vme_get_size(struct vme_resource *resource)
}
EXPORT_SYMBOL(vme_get_size);
-static int vme_check_window(u32 aspace, unsigned long long vme_base,
- unsigned long long size)
+int vme_check_window(u32 aspace, unsigned long long vme_base,
+ unsigned long long size)
{
int retval = 0;
@@ -199,10 +199,8 @@ static int vme_check_window(u32 aspace, unsigned long long vme_base,
retval = -EFAULT;
break;
case VME_A64:
- /*
- * Any value held in an unsigned long long can be used as the
- * base
- */
+ if ((size != 0) && (vme_base > U64_MAX + 1 - size))
+ retval = -EFAULT;
break;
case VME_CRCSR:
if (((vme_base + size) > VME_CRCSR_MAX) ||
@@ -223,6 +221,7 @@ static int vme_check_window(u32 aspace, unsigned long long vme_base,
return retval;
}
+EXPORT_SYMBOL(vme_check_window);
/*
* Request a slave image with specific attributes, return some unique