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authorYunhong Jiang <yunhong.jiang@linux.intel.com>2017-03-08 23:13:28 -0800
committerYunhong Jiang <yunhong.jiang@linux.intel.com>2017-03-08 23:36:15 -0800
commit52f993b8e89487ec9ee15a7fb4979e0f09a45b27 (patch)
treed65304486afe0bea4a311c783c0d72791c8c0aa2 /kernel/arch/sh
parentc189ccac5702322ed843fe17057035b7222a59b6 (diff)
Upgrade to 4.4.50-rt62
The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it to 4.4.50-rt62. The command to achieve it is: a) Clone a git repo from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git b) Get the diff between this two changesets: git diff 640eca2901f3435e616157b11379d3223a44b391 705619beeea1b0b48219a683fd1a901a86fdaf5e where the two commits are: [yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only 640eca2901f3435e616157b11379d3223a44b391 640eca2901f3 v4.4.6-rt14 localversion-rt [yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only 705619beeea1b0b48219a683fd1a901a86fdaf5e 705619beeea1 Linux 4.4.50-rt62 localversion-rt c) One patch has been backported thus revert the patch before applying. filterdiff -p1 -x scripts/package/Makefile ~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run Upstream status: backport Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01 Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/arch/sh')
-rw-r--r--kernel/arch/sh/include/asm/uaccess.h5
-rw-r--r--kernel/arch/sh/include/asm/uaccess_64.h1
-rw-r--r--kernel/arch/sh/mm/kmap.c2
3 files changed, 7 insertions, 1 deletions
diff --git a/kernel/arch/sh/include/asm/uaccess.h b/kernel/arch/sh/include/asm/uaccess.h
index a49635c51..92ade79ac 100644
--- a/kernel/arch/sh/include/asm/uaccess.h
+++ b/kernel/arch/sh/include/asm/uaccess.h
@@ -151,7 +151,10 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
__kernel_size_t __copy_size = (__kernel_size_t) n;
if (__copy_size && __access_ok(__copy_from, __copy_size))
- return __copy_user(to, from, __copy_size);
+ __copy_size = __copy_user(to, from, __copy_size);
+
+ if (unlikely(__copy_size))
+ memset(to + (n - __copy_size), 0, __copy_size);
return __copy_size;
}
diff --git a/kernel/arch/sh/include/asm/uaccess_64.h b/kernel/arch/sh/include/asm/uaccess_64.h
index c01376c76..ca5073dd4 100644
--- a/kernel/arch/sh/include/asm/uaccess_64.h
+++ b/kernel/arch/sh/include/asm/uaccess_64.h
@@ -24,6 +24,7 @@
#define __get_user_size(x,ptr,size,retval) \
do { \
retval = 0; \
+ x = 0; \
switch (size) { \
case 1: \
retval = __get_user_asm_b((void *)&x, \
diff --git a/kernel/arch/sh/mm/kmap.c b/kernel/arch/sh/mm/kmap.c
index ec29e14ec..bf25d7c79 100644
--- a/kernel/arch/sh/mm/kmap.c
+++ b/kernel/arch/sh/mm/kmap.c
@@ -36,6 +36,7 @@ void *kmap_coherent(struct page *page, unsigned long addr)
BUG_ON(!test_bit(PG_dcache_clean, &page->flags));
+ preempt_disable();
pagefault_disable();
idx = FIX_CMAP_END -
@@ -64,4 +65,5 @@ void kunmap_coherent(void *kvaddr)
}
pagefault_enable();
+ preempt_enable();
}